Removed BOM from modified files as demanded by PR linter.

* Also send Steps update to Results service

* Refactor to separate results server from current job server

* If hit any error while uploading to Results, skip Results upload

* Add proxy authentication and buffer request for WinHttpHandler

* Remove unnecessary null guard

* Also send Results telemetry when step update fails

* IResultsServer is not disposable

.github/workflows/release.yml

@@ -131,7 +131,7 @@ jobs:
         file=$(ls)
         sha=$(sha256sum $file | awk '{ print $1 }')
         echo "Computed sha256: $sha for $file"
-        echo "::set-output name=${{matrix.runtime}}-sha256::$sha"
+        echo "${{matrix.runtime}}-sha256=$sha" >> $GITHUB_OUTPUT
       shell: bash
       id: sha
       name: Compute SHA256
@@ -140,8 +140,8 @@ jobs:
         file=$(ls)
         sha=$(sha256sum $file | awk '{ print $1 }')
         echo "Computed sha256: $sha for $file"
-        echo "::set-output name=${{matrix.runtime}}-sha256::$sha"
-        echo "::set-output name=sha256::$sha"
+        echo "${{matrix.runtime}}-sha256=$sha" >> $GITHUB_OUTPUT
+        echo "sha256=$sha" >> $GITHUB_OUTPUT
       shell: bash
       id: sha_noexternals
       name: Compute SHA256
@@ -150,8 +150,8 @@ jobs:
         file=$(ls)
         sha=$(sha256sum $file | awk '{ print $1 }')
         echo "Computed sha256: $sha for $file"
-        echo "::set-output name=${{matrix.runtime}}-sha256::$sha"
-        echo "::set-output name=sha256::$sha"
+        echo "${{matrix.runtime}}-sha256=$sha" >> $GITHUB_OUTPUT
+        echo "sha256=$sha" >> $GITHUB_OUTPUT
       shell: bash
       id: sha_noruntime
       name: Compute SHA256
@@ -160,8 +160,8 @@ jobs:
         file=$(ls)
         sha=$(sha256sum $file | awk '{ print $1 }')
         echo "Computed sha256: $sha for $file"
-        echo "::set-output name=${{matrix.runtime}}-sha256::$sha"
-        echo "::set-output name=sha256::$sha"
+        echo "${{matrix.runtime}}-sha256=$sha" >> $GITHUB_OUTPUT
+        echo "sha256=$sha" >> $GITHUB_OUTPUT
       shell: bash
       id: sha_noruntime_noexternals
       name: Compute SHA256

docs/adrs/0000-proxy-update.md

@@ -1,38 +0,0 @@
-# ADR 000: Update Proxy Behavior of Self-Hosted Runners
-
-**Date**: 2023-02-21
-
-**Status**: Pending
-
-## Context
-
-Today, the different user-accessible building blocks of GitHub Actions implement proxy behaviour with significant functional differences.
-Users could realistically run all of the below examples and they would reasonably expect that their proxy settings will have the same networking effects across all of them.
-
-A user running `actions/actions-runner-controller`, which starts instances of `actions/runner`, that the runs node.js actions made with `actions/toolkit`
-- ARC and its controller and listener pods in k8s will follow `golang` defaults for proxy behaviour
-- The `runner` overrides the default proxy behaviour of C# and implements it [explicitly](https://github.com/actions/runner/blob/main/src/Runner.Sdk/RunnerWebProxy.cs), however currently differently from `toolkit`
-- `toolkit` overrides the default proxy behaviour of node.js and implements it [explicitly](https://github.com/actions/toolkit/blob/main/packages/http-client/src/proxy.ts), however currently differently from `runner`
-
-
-## Example 1 - ARC
-
-A user wants to create a scaleset in ARC. They give following settings when creating an ARC Scale Set:
-- `https_proxy=https://someproxy.company.com`
-- `no_proxy=8.8.8.8,192.168.1.1/32`
-The ENV variables are propagated through all actors, but:
-
-- *ARC operators and listener pods* will: follow the proxy but bypass it for `8.8.8.8` and the CIDR block `192.168.1.1/32`
-- *The runner* will: use a proxy and ignore these `no_proxy` settings (no IP support in `runner` for `no_proxy`)
-- *A node.js GitHub Action in a job executed by the runner* will: bypass `8.8.8.8` but use proxy for the CIDR block `192.168.1.1/32`
-
-## Example 2 - Self-Hosted runner
-
-Given the following settings when creating an ARC Scale Set:
-- `https_proxy=someproxy.company.com`
-
-- *The runner* will: silently ignore `https_proxy` value because it doesn't have a protocol (missing `https://`)
-- *A node.js GitHub Action in a job executed by the runner* will: throw an exception because proxy could not be parsed (missing `https://`)
-
-## Decisions
-## Consequences

docs/adrs/2494-runner-image-tags.md

@@ -0,0 +1,65 @@
+# ADR 2494: Runner Image Tags
+
+**Date**: 2023-03-17
+
+**Status**: Accepted<!-- |Accepted|Rejected|Superceded|Deprecated -->
+
+## Context
+
+Following the [adoption of actions-runner-controller by GitHub](https://github.com/actions/actions-runner-controller/discussions/2072) and the introduction of the new runner scale set autoscaling mode, we needed to provide a basic runner image that could be used off the shelf without much friction.
+
+The [current runner image](https://github.com/actions/runner/pkgs/container/actions-runner) is published to GHCR. Each release of this image is tagged with the runner version and the most recent release is also tagged with `latest`.
+
+While the use of `latest` is common practice, we recommend that users pin a specific version of the runner image for a predictable runtime and improved security posture. However, we still notice that a large number of end users are relying on the `latest` tag & raising issues when they encounter problems.
+
+Add to that, the community actions-runner-controller maintainers have issued a [deprecation notice](https://github.com/actions/actions-runner-controller/issues/2056) of the `latest` tag for the existing runner images (https://github.com/orgs/actions-runner-controller/packages).
+
+## Decision
+
+Proceed with Option 2, keeping the `latest` tag and adding the `NOTES.txt` file to our helm charts with the notice.
+
+### Option 1: Remove the `latest` tag
+
+By removing the `latest` tag, we have to proceed with either of these options:
+
+1. Remove the runner image reference in the `values.yaml` provided with the `gha-runner-scale-set` helm chart and mark these fields as required so that users have to explicitly specify a runner image and a specific tag. This will obviously introduce more  friction for users who want to start using actions-runner-controller for the first time.
+
+```yaml
+  spec:
+    containers:
+    - name: runner
+      image: ""
+      tag: ""
+      command: ["/home/runner/run.sh"]
+```
+
+1. Pin a specific runner image tag in the `values.yaml` provided with the `gha-runner-scale-set` helm chart. This will reduce friction for users who want to start using actions-runner-controller for the first time but will require us to update the `values.yaml` with every new runner release.
+
+```yaml
+  spec:
+    containers:
+    - name: runner
+      image: "ghcr.io/actions/actions-runner"
+      tag: "v2.300.0"
+      command: ["/home/runner/run.sh"]
+```
+
+### Option 2: Keep the `latest` tag
+
+Keeping the `latest` tag is also a reasonable option especially if we don't expect to make any breaking changes to the runner image. We could enhance this by adding a [NOTES.txt](https://helm.sh/docs/chart_template_guide/notes_files/) to the helm chart which will be displayed to the user after a successful helm install/upgrade. This will help users understand the implications of using the `latest` tag and how to pin a specific version of the runner image.
+
+The runner image release workflow will need to be updated so that the image is pushed to GHCR and tagged only when the runner rollout has reached all scale units.
+
+## Consequences
+
+Proceeding with **option 1** means:
+
+1. We will enhance the runtime predictability and security posture of our end users
+1. We will have to update the `values.yaml` with every new runner release (that can be automated)
+1. We will introduce friction for users who want to start using actions-runner-controller for the first time
+
+Proceeding with **option 2** means:
+
+1. We will have to continue to maintain the `latest` tag
+1. We will assume that end users will be able to handle the implications of using the `latest` tag
+1. Runner image release workflow needs to be updated 

images/Dockerfile

@@ -2,7 +2,7 @@ FROM mcr.microsoft.com/dotnet/runtime-deps:6.0 as build
 
 ARG RUNNER_VERSION
 ARG RUNNER_ARCH="x64"
-ARG RUNNER_CONTAINER_HOOKS_VERSION=0.2.0
+ARG RUNNER_CONTAINER_HOOKS_VERSION=0.3.1
 ARG DOCKER_VERSION=20.10.23
 
 RUN apt update -y && apt install curl unzip -y
@@ -24,11 +24,26 @@ RUN export DOCKER_ARCH=x86_64 \
 
 FROM mcr.microsoft.com/dotnet/runtime-deps:6.0
 
-ENV RUNNER_ALLOW_RUNASROOT=1
+ENV DEBIAN_FRONTEND=noninteractive
 ENV RUNNER_MANUALLY_TRAP_SIG=1
 ENV ACTIONS_RUNNER_PRINT_LOG_TO_STDOUT=1
 
-WORKDIR /actions-runner
-COPY --from=build /actions-runner .
+RUN apt-get update -y \
+    && apt-get install -y --no-install-recommends \
+    sudo \
+    && rm -rf /var/lib/apt/lists/*
 
-RUN install -o root -g root -m 755 docker/* /usr/bin/ && rm -rf docker
+RUN adduser --disabled-password --gecos "" --uid 1001 runner \
+    && groupadd docker --gid 123 \
+    && usermod -aG sudo runner \
+    && usermod -aG docker runner \
+    && echo "%sudo   ALL=(ALL:ALL) NOPASSWD:ALL" > /etc/sudoers \
+    && echo "Defaults env_keep += \"DEBIAN_FRONTEND\"" >> /etc/sudoers
+
+WORKDIR /home/runner
+
+COPY --chown=runner:docker --from=build /actions-runner .
+
+RUN install -o root -g root -m 755 docker/* /usr/bin/ && rm -rf docker
+
+USER runner

releaseNote.md

@@ -1,15 +1,17 @@
 ## Features
-- Add support for ghe.com domain (#2420)
-- Add docker cli to the runner image. (#2425)
+- Support matrix context in output keys (#2477)
+- Add update certificates to `./run.sh` if `RUNNER_UPDATE_CA_CERTS` env is set (#2471)
+- Bypass all proxies for all hosts if `no_proxy='*'` is set (#2395)
+- Change runner image to make user/folder align with `ubuntu-latest` hosted runner. (#2469)
 
 ## Bugs
-- Fix URL construction bug for RunService (#2396)
-- Defer evaluation of a step's DisplayName until its condition is evaluated. (#2313)
-- Replace '(' and ')' with '[' and '] from OS.Description for fixing User-Agent header validation (#2288)
+- Exit on runner version deprecation error (#2299)
+- Runner service exit after consecutive re-try exits (#2426)
 
 ## Misc
-- Bump dotnet sdk to latest version. (#2392)
-- Start calling run service for job completion (#2412, #2423)
+- Replace deprecated command with environment file (#2429)
+- Make requests to `Run` service to renew job request (#2461)
+- Add job/step log upload to Result service (#2447, #2439)
 
 _Note: Actions Runner follows a progressive release policy, so the latest release might not be available to your enterprise, organization, or repository yet. 
 To confirm which version of the Actions Runner you should expect, please view the download instructions for your enterprise, organization, or repository. 

src/Misc/layoutbin/RunnerService.js

@@ -24,7 +24,8 @@ if (exitServiceAfterNFailures <= 0) {
   exitServiceAfterNFailures = NaN;
 }
 
-var consecutiveFailureCount = 0;
+var unknownFailureRetryCount = 0;
+var retriableFailureRetryCount = 0;
 
 var gracefulShutdown = function () {
   console.log("Shutting down runner listener");
@@ -62,7 +63,8 @@ var runService = function () {
 
       listener.stdout.on("data", (data) => {
         if (data.toString("utf8").includes("Listening for Jobs")) {
-          consecutiveFailureCount = 0;
+          unknownFailureRetryCount = 0;
+          retriableFailureRetryCount = 0;
         }
         process.stdout.write(data.toString("utf8"));
       });
@@ -92,24 +94,38 @@ var runService = function () {
           console.log(
             "Runner listener exit with retryable error, re-launch runner in 5 seconds."
           );
-          consecutiveFailureCount = 0;
+          unknownFailureRetryCount = 0;
+          retriableFailureRetryCount++;
+          if (retriableFailureRetryCount >= 10) {
+            console.error(
+              "Stopping the runner after 10 consecutive re-tryable failures"
+            );
+            stopping = true;
+          }
         } else if (code === 3 || code === 4) {
           console.log(
             "Runner listener exit because of updating, re-launch runner in 5 seconds."
           );
-          consecutiveFailureCount = 0;
+          unknownFailureRetryCount = 0;
+          retriableFailureRetryCount++;
+          if (retriableFailureRetryCount >= 10) {
+            console.error(
+              "Stopping the runner after 10 consecutive re-tryable failures"
+            );
+            stopping = true;
+          }
         } else {
           var messagePrefix = "Runner listener exit with undefined return code";
-          consecutiveFailureCount++;
+          unknownFailureRetryCount++;
+          retriableFailureRetryCount = 0;
           if (
             !isNaN(exitServiceAfterNFailures) &&
-            consecutiveFailureCount >= exitServiceAfterNFailures
+            unknownFailureRetryCount >= exitServiceAfterNFailures
           ) {
             console.error(
-              `${messagePrefix}, exiting service after ${consecutiveFailureCount} consecutive failures`
+              `${messagePrefix}, exiting service after ${unknownFailureRetryCount} consecutive failures`
             );
-            gracefulShutdown();
-            return;
+            stopping = true
           } else {
             console.log(`${messagePrefix}, re-launch runner in 5 seconds.`);
           }

src/Misc/layoutroot/run.sh

@@ -53,6 +53,33 @@ runWithManualTrap() {
     done
 }
 
+function updateCerts() {
+    local sudo_prefix=""
+    local user_id=`id -u`
+
+    if [ $user_id -ne 0 ]; then
+        if [[ ! -x "$(command -v sudo)" ]]; then
+            echo "Warning: failed to update certificate store: sudo is required but not found"
+            return 1
+        else
+            sudo_prefix="sudo"
+        fi
+    fi
+
+    if [[ -x "$(command -v update-ca-certificates)" ]]; then
+        eval $sudo_prefix "update-ca-certificates"
+    elif [[ -x "$(command -v update-ca-trust)" ]]; then
+        eval $sudo_prefix "update-ca-trust"
+    else
+        echo "Warning: failed to update certificate store: update-ca-certificates or update-ca-trust not found. This can happen if you're using a different runner base image."
+        return 1
+    fi
+}
+
+if [[ ! -z "$RUNNER_UPDATE_CA_CERTS" ]]; then
+    updateCerts
+fi
+
 if [[ -z "$RUNNER_MANUALLY_TRAP_SIG" ]]; then
     run $*
 else

src/Runner.Common/BrokerServer.cs

@@ -0,0 +1,56 @@
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using GitHub.Actions.RunService.WebApi;
+using GitHub.DistributedTask.Pipelines;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Runner.Sdk;
+using GitHub.Services.Common;
+using Sdk.RSWebApi.Contracts;
+using Sdk.WebApi.WebApi.RawClient;
+
+namespace GitHub.Runner.Common
+{
+    [ServiceLocator(Default = typeof(BrokerServer))]
+    public interface IBrokerServer : IRunnerService
+    {
+        Task ConnectAsync(Uri serverUrl, VssCredentials credentials);
+
+        Task<TaskAgentMessage> GetRunnerMessageAsync(CancellationToken token, TaskAgentStatus status, string version);
+    }
+
+    public sealed class BrokerServer : RunnerService, IBrokerServer
+    {
+        private bool _hasConnection;
+        private Uri _brokerUri;
+        private RawConnection _connection;
+        private BrokerHttpClient _brokerHttpClient;
+
+        public async Task ConnectAsync(Uri serverUri, VssCredentials credentials)
+        {
+            _brokerUri = serverUri;
+
+            _connection = VssUtil.CreateRawConnection(serverUri, credentials);
+            _brokerHttpClient = await _connection.GetClientAsync<BrokerHttpClient>();
+            _hasConnection = true;
+        }
+
+        private void CheckConnection()
+        {
+            if (!_hasConnection)
+            {
+                throw new InvalidOperationException($"SetConnection");
+            }
+        }
+
+        public Task<TaskAgentMessage> GetRunnerMessageAsync(CancellationToken cancellationToken, TaskAgentStatus status, string version)
+        {
+            CheckConnection();
+            var jobMessage = RetryRequest<TaskAgentMessage>(
+                async () => await _brokerHttpClient.GetRunnerMessageAsync(version, status, cancellationToken), cancellationToken);
+
+            return jobMessage;
+        }
+    }
+}

src/Runner.Common/ConfigurationStore.cs

@@ -50,6 +50,12 @@ namespace GitHub.Runner.Common
         [DataMember(EmitDefaultValue = false)]
         public string MonitorSocketAddress { get; set; }
 
+        [DataMember(EmitDefaultValue = false)]
+        public bool UseV2Flow { get; set; }
+
+        [DataMember(EmitDefaultValue = false)]
+        public string ServerUrlV2 { get; set; }
+
         [IgnoreDataMember]
         public bool IsHostedServer
         {

src/Runner.Common/HostContext.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Diagnostics;
@@ -53,7 +53,7 @@ namespace GitHub.Runner.Common
         private static int[] _vssHttpCredentialEventIds = new int[] { 11, 13, 14, 15, 16, 17, 18, 20, 21, 22, 27, 29 };
         private readonly ConcurrentDictionary<Type, object> _serviceInstances = new();
         private readonly ConcurrentDictionary<Type, Type> _serviceTypes = new();
-        private readonly ISecretMasker _secretMasker = new SecretMasker();
+        private readonly ISecretMasker _secretMasker;
         private readonly List<ProductInfoHeaderValue> _userAgents = new() { new ProductInfoHeaderValue($"GitHubActionsRunner-{BuildConstants.RunnerPackage.PackageName}", BuildConstants.RunnerPackage.Version) };
         private CancellationTokenSource _runnerShutdownTokenSource = new();
         private object _perfLock = new();
@@ -82,17 +82,20 @@ namespace GitHub.Runner.Common
             _loadContext = AssemblyLoadContext.GetLoadContext(typeof(HostContext).GetTypeInfo().Assembly);
             _loadContext.Unloading += LoadContext_Unloading;
 
-            this.SecretMasker.AddValueEncoder(ValueEncoders.Base64StringEscape);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.Base64StringEscapeShift1);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.Base64StringEscapeShift2);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.CommandLineArgumentEscape);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.ExpressionStringEscape);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.JsonStringEscape);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.UriDataEscape);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.XmlDataEscape);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.TrimDoubleQuotes);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.PowerShellPreAmpersandEscape);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.PowerShellPostAmpersandEscape);
+            var masks = new List<ValueEncoder>()
+            {
+                ValueEncoders.EnumerateBase64Variations,
+                ValueEncoders.CommandLineArgumentEscape,
+                ValueEncoders.ExpressionStringEscape,
+                ValueEncoders.JsonStringEscape,
+                ValueEncoders.UriDataEscape,
+                ValueEncoders.XmlDataEscape,
+                ValueEncoders.TrimDoubleQuotes,
+                ValueEncoders.PowerShellPreAmpersandEscape,
+                ValueEncoders.PowerShellPostAmpersandEscape
+            };
+            _secretMasker = new SecretMasker(masks);
+
 
             // Create StdoutTraceListener if ENV is set
             StdoutTraceListener stdoutTraceListener = null;
@@ -220,7 +223,7 @@ namespace GitHub.Runner.Common
             var runnerFile = GetConfigFile(WellKnownConfigFile.Runner);
             if (File.Exists(runnerFile))
             {
-                var runnerSettings = IOUtil.LoadObject<RunnerSettings>(runnerFile);
+                var runnerSettings = IOUtil.LoadObject<RunnerSettings>(runnerFile, true);
                 _userAgents.Add(new ProductInfoHeaderValue("RunnerId", runnerSettings.AgentId.ToString(CultureInfo.InvariantCulture)));
                 _userAgents.Add(new ProductInfoHeaderValue("GroupId", runnerSettings.PoolId.ToString(CultureInfo.InvariantCulture)));
             }

src/Runner.Common/JobServer.cs

@@ -24,15 +24,11 @@ namespace GitHub.Runner.Common
         Task ConnectAsync(VssConnection jobConnection);
 
         void InitializeWebsocketClient(ServiceEndpoint serviceEndpoint);
-        void InitializeResultsClient(Uri uri, string token);
 
         // logging and console
         Task<TaskLog> AppendLogContentAsync(Guid scopeIdentifier, string hubName, Guid planId, int logId, Stream uploadStream, CancellationToken cancellationToken);
         Task AppendTimelineRecordFeedAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, Guid timelineRecordId, Guid stepId, IList<string> lines, long? startLine, CancellationToken cancellationToken);
         Task<TaskAttachment> CreateAttachmentAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, Guid timelineRecordId, String type, String name, Stream uploadStream, CancellationToken cancellationToken);
-        Task CreateStepSummaryAsync(string planId, string jobId, Guid stepId, string file, CancellationToken cancellationToken);
-        Task CreateResultsStepLogAsync(string planId, string jobId, Guid stepId, string file, bool finalize, bool firstBlock, long lineCount, CancellationToken cancellationToken);
-        Task CreateResultsJobLogAsync(string planId, string jobId, string file, bool finalize, bool firstBlock, long lineCount, CancellationToken cancellationToken);
         Task<TaskLog> CreateLogAsync(Guid scopeIdentifier, string hubName, Guid planId, TaskLog log, CancellationToken cancellationToken);
         Task<Timeline> CreateTimelineAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, CancellationToken cancellationToken);
         Task<List<TimelineRecord>> UpdateTimelineRecordsAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, IEnumerable<TimelineRecord> records, CancellationToken cancellationToken);
@@ -46,7 +42,6 @@ namespace GitHub.Runner.Common
         private bool _hasConnection;
         private VssConnection _connection;
         private TaskHttpClient _taskClient;
-        private ResultsHttpClient _resultsClient;
         private ClientWebSocket _websocketClient;
 
         private ServiceEndpoint _serviceEndpoint;
@@ -150,12 +145,6 @@ namespace GitHub.Runner.Common
             InitializeWebsocketClient(TimeSpan.Zero);
         }
 
-        public void InitializeResultsClient(Uri uri, string token)
-        {
-            var httpMessageHandler = HostContext.CreateHttpClientHandler();
-            this._resultsClient = new ResultsHttpClient(uri, httpMessageHandler, token, disposeHandler: true);
-        }
-
         public ValueTask DisposeAsync()
         {
             CloseWebSocket(WebSocketCloseStatus.NormalClosure, CancellationToken.None);
@@ -318,32 +307,6 @@ namespace GitHub.Runner.Common
             return _taskClient.CreateAttachmentAsync(scopeIdentifier, hubName, planId, timelineId, timelineRecordId, type, name, uploadStream, cancellationToken: cancellationToken);
         }
 
-        public Task CreateStepSummaryAsync(string planId, string jobId, Guid stepId, string file, CancellationToken cancellationToken)
-        {
-            if (_resultsClient != null)
-            {
-                return _resultsClient.UploadStepSummaryAsync(planId, jobId, stepId, file, cancellationToken: cancellationToken);
-            }
-            throw new InvalidOperationException("Results client is not initialized.");
-        }
-
-        public Task CreateResultsStepLogAsync(string planId, string jobId, Guid stepId, string file, bool finalize, bool firstBlock, long lineCount, CancellationToken cancellationToken)
-        {
-            if (_resultsClient != null)
-            {
-                return _resultsClient.UploadResultsStepLogAsync(planId, jobId, stepId, file, finalize, firstBlock, lineCount, cancellationToken: cancellationToken);
-            }
-            throw new InvalidOperationException("Results client is not initialized.");
-        }
-
-        public Task CreateResultsJobLogAsync(string planId, string jobId, string file, bool finalize, bool firstBlock, long lineCount, CancellationToken cancellationToken)
-        {
-            if (_resultsClient != null)
-            {
-                return _resultsClient.UploadResultsJobLogAsync(planId, jobId, file, finalize, firstBlock, lineCount, cancellationToken: cancellationToken);
-            }
-            throw new InvalidOperationException("Results client is not initialized.");
-        }
 
         public Task<TaskLog> CreateLogAsync(Guid scopeIdentifier, string hubName, Guid planId, TaskLog log, CancellationToken cancellationToken)
         {

src/Runner.Common/JobServerQueue.cs

@@ -65,6 +65,7 @@ namespace GitHub.Runner.Common
 
         // common
         private IJobServer _jobServer;
+        private IResultsServer _resultsServer;
         private Task[] _allDequeueTasks;
         private readonly TaskCompletionSource<int> _jobCompletionSource = new();
         private readonly TaskCompletionSource<int> _jobRecordUpdated = new();
@@ -91,6 +92,7 @@ namespace GitHub.Runner.Common
         {
             base.Initialize(hostContext);
             _jobServer = hostContext.GetService<IJobServer>();
+            _resultsServer = hostContext.GetService<IResultsServer>();
         }
 
         public void Start(Pipelines.AgentJobRequestMessage jobRequest)
@@ -111,7 +113,7 @@ namespace GitHub.Runner.Common
                 !string.IsNullOrEmpty(resultsReceiverEndpoint))
             {
                 Trace.Info("Initializing results client");
-                _jobServer.InitializeResultsClient(new Uri(resultsReceiverEndpoint), accessToken);
+                _resultsServer.InitializeResultsClient(new Uri(resultsReceiverEndpoint), accessToken);
                 _resultsClientInitiated = true;
             }
 
@@ -512,19 +514,14 @@ namespace GitHub.Runner.Common
                         }
                         catch (Exception ex)
                         {
-                            var issue = new Issue() { Type = IssueType.Warning, Message = $"Caught exception during file upload to results. {ex.Message}" };
-                            issue.Data[Constants.Runner.InternalTelemetryIssueDataKey] = Constants.Runner.ResultsUploadFailure;
-
-                            var telemetryRecord = new TimelineRecord()
-                            {
-                                Id = Constants.Runner.TelemetryRecordId,
-                            };
-                            telemetryRecord.Issues.Add(issue);
-                            QueueTimelineRecordUpdate(_jobTimelineId, telemetryRecord);
-
                             Trace.Info("Catch exception during file upload to results, keep going since the process is best effort.");
                             Trace.Error(ex);
                             errorCount++;
+
+                            // If we hit any exceptions uploading to Results, let's skip any additional uploads to Results
+                            _resultsClientInitiated = false;
+
+                            SendResultsTelemetry(ex);
                         }
                     }
 
@@ -542,6 +539,19 @@ namespace GitHub.Runner.Common
             }
         }
 
+        private void SendResultsTelemetry(Exception ex)
+        {
+            var issue = new Issue() { Type = IssueType.Warning, Message = $"Caught exception with results. {ex.Message}" };
+            issue.Data[Constants.Runner.InternalTelemetryIssueDataKey] = Constants.Runner.ResultsUploadFailure;
+
+            var telemetryRecord = new TimelineRecord()
+            {
+                Id = Constants.Runner.TelemetryRecordId,
+            };
+            telemetryRecord.Issues.Add(issue);
+            QueueTimelineRecordUpdate(_jobTimelineId, telemetryRecord);
+        }
+
         private async Task ProcessTimelinesUpdateQueueAsync(bool runOnce = false)
         {
             while (!_jobCompletionSource.Task.IsCompleted || runOnce)
@@ -612,6 +622,22 @@ namespace GitHub.Runner.Common
                         try
                         {
                             await _jobServer.UpdateTimelineRecordsAsync(_scopeIdentifier, _hubName, _planId, update.TimelineId, update.PendingRecords, default(CancellationToken));
+                            try
+                            {
+                                if (_resultsClientInitiated)
+                                {
+                                    await _resultsServer.UpdateResultsWorkflowStepsAsync(_scopeIdentifier, _hubName, _planId, update.TimelineId, update.PendingRecords, default(CancellationToken));
+                                }
+                            }
+                            catch (Exception e)
+                            {
+                                Trace.Info("Catch exception during update steps, skip update Results.");
+                                Trace.Error(e);
+                                _resultsClientInitiated = false;
+
+                                SendResultsTelemetry(e);
+                            }
+
                             if (_bufferedRetryRecords.Remove(update.TimelineId))
                             {
                                 Trace.Verbose("Cleanup buffered timeline record for timeline: {0}.", update.TimelineId);
@@ -819,7 +845,7 @@ namespace GitHub.Runner.Common
             Trace.Info($"Starting to upload summary file to results service {file.Name}, {file.Path}");
             ResultsFileUploadHandler summaryHandler = async (file) =>
             {
-                await _jobServer.CreateStepSummaryAsync(file.PlanId, file.JobId, file.RecordId, file.Path, CancellationToken.None);
+                await _resultsServer.CreateResultsStepSummaryAsync(file.PlanId, file.JobId, file.RecordId, file.Path, CancellationToken.None);
             };
 
             await UploadResultsFile(file, summaryHandler);
@@ -830,7 +856,7 @@ namespace GitHub.Runner.Common
             Trace.Info($"Starting upload of step log file to results service {file.Name}, {file.Path}");
             ResultsFileUploadHandler stepLogHandler = async (file) =>
             {
-                await _jobServer.CreateResultsStepLogAsync(file.PlanId, file.JobId, file.RecordId, file.Path, file.Finalize, file.FirstBlock, file.TotalLines, CancellationToken.None);
+                await _resultsServer.CreateResultsStepLogAsync(file.PlanId, file.JobId, file.RecordId, file.Path, file.Finalize, file.FirstBlock, file.TotalLines, CancellationToken.None);
             };
 
             await UploadResultsFile(file, stepLogHandler);
@@ -841,7 +867,7 @@ namespace GitHub.Runner.Common
             Trace.Info($"Starting upload of job log file to results service {file.Name}, {file.Path}");
             ResultsFileUploadHandler jobLogHandler = async (file) =>
             {
-                await _jobServer.CreateResultsJobLogAsync(file.PlanId, file.JobId, file.Path, file.Finalize, file.FirstBlock, file.TotalLines, CancellationToken.None);
+                await _resultsServer.CreateResultsJobLogAsync(file.PlanId, file.JobId, file.Path, file.Finalize, file.FirstBlock, file.TotalLines, CancellationToken.None);
             };
 
             await UploadResultsFile(file, jobLogHandler);
@@ -849,6 +875,11 @@ namespace GitHub.Runner.Common
 
         private async Task UploadResultsFile(ResultsUploadFileInfo file, ResultsFileUploadHandler uploadHandler)
         {
+            if (!_resultsClientInitiated)
+            {
+                return;
+            }
+
             bool uploadSucceed = false;
             try
             {
@@ -903,8 +934,6 @@ namespace GitHub.Runner.Common
         public long TotalLines { get; set; }
     }
 
-
-
     internal class ConsoleLineInfo
     {
         public ConsoleLineInfo(Guid recordId, string line, long? lineNumber)

src/Runner.Common/ResultsServer.cs

@@ -0,0 +1,98 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Services.Results.Client;
+
+namespace GitHub.Runner.Common
+{
+    [ServiceLocator(Default = typeof(ResultServer))]
+    public interface IResultsServer : IRunnerService
+    {
+        void InitializeResultsClient(Uri uri, string token);
+
+        // logging and console
+        Task CreateResultsStepSummaryAsync(string planId, string jobId, Guid stepId, string file,
+            CancellationToken cancellationToken);
+
+        Task CreateResultsStepLogAsync(string planId, string jobId, Guid stepId, string file, bool finalize,
+            bool firstBlock, long lineCount, CancellationToken cancellationToken);
+
+        Task CreateResultsJobLogAsync(string planId, string jobId, string file, bool finalize, bool firstBlock,
+            long lineCount, CancellationToken cancellationToken);
+
+        Task UpdateResultsWorkflowStepsAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId,
+            IEnumerable<TimelineRecord> records, CancellationToken cancellationToken);
+    }
+
+    public sealed class ResultServer : RunnerService, IResultsServer
+    {
+        private ResultsHttpClient _resultsClient;
+
+        public void InitializeResultsClient(Uri uri, string token)
+        {
+            var httpMessageHandler = HostContext.CreateHttpClientHandler();
+            this._resultsClient = new ResultsHttpClient(uri, httpMessageHandler, token, disposeHandler: true);
+        }
+
+        public Task CreateResultsStepSummaryAsync(string planId, string jobId, Guid stepId, string file,
+            CancellationToken cancellationToken)
+        {
+            if (_resultsClient != null)
+            {
+                return _resultsClient.UploadStepSummaryAsync(planId, jobId, stepId, file,
+                    cancellationToken: cancellationToken);
+            }
+
+            throw new InvalidOperationException("Results client is not initialized.");
+        }
+
+        public Task CreateResultsStepLogAsync(string planId, string jobId, Guid stepId, string file, bool finalize,
+            bool firstBlock, long lineCount, CancellationToken cancellationToken)
+        {
+            if (_resultsClient != null)
+            {
+                return _resultsClient.UploadResultsStepLogAsync(planId, jobId, stepId, file, finalize, firstBlock,
+                    lineCount, cancellationToken: cancellationToken);
+            }
+
+            throw new InvalidOperationException("Results client is not initialized.");
+        }
+
+        public Task CreateResultsJobLogAsync(string planId, string jobId, string file, bool finalize, bool firstBlock,
+            long lineCount, CancellationToken cancellationToken)
+        {
+            if (_resultsClient != null)
+            {
+                return _resultsClient.UploadResultsJobLogAsync(planId, jobId, file, finalize, firstBlock, lineCount,
+                    cancellationToken: cancellationToken);
+            }
+
+            throw new InvalidOperationException("Results client is not initialized.");
+        }
+
+        public Task UpdateResultsWorkflowStepsAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId,
+            IEnumerable<TimelineRecord> records, CancellationToken cancellationToken)
+        {
+            if (_resultsClient != null)
+            {
+                try
+                {
+                    var timelineRecords = records.ToList();
+                    return _resultsClient.UpdateWorkflowStepsAsync(planId, new List<TimelineRecord>(timelineRecords),
+                        cancellationToken: cancellationToken);
+                }
+                catch (Exception ex)
+                {
+                    // Log error, but continue as this call is best-effort
+                    Trace.Info($"Failed to update steps status due to {ex.GetType().Name}");
+                    Trace.Error(ex);
+                }
+            }
+
+            throw new InvalidOperationException("Results client is not initialized.");
+        }
+    }
+}

src/Runner.Common/RunServer.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
@@ -7,6 +7,7 @@ using GitHub.DistributedTask.Pipelines;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Sdk;
 using GitHub.Services.Common;
+using Sdk.RSWebApi.Contracts;
 using Sdk.WebApi.WebApi.RawClient;
 
 namespace GitHub.Runner.Common
@@ -19,6 +20,8 @@ namespace GitHub.Runner.Common
         Task<AgentJobRequestMessage> GetJobMessageAsync(string id, CancellationToken token);
 
         Task CompleteJobAsync(Guid planId, Guid jobId, TaskResult result, Dictionary<String, VariableValue> outputs, IList<StepResult> stepResults, CancellationToken token);
+
+        Task<RenewJobResponse> RenewJobAsync(Guid planId, Guid jobId, CancellationToken token);
     }
 
     public sealed class RunServer : RunnerService, IRunServer
@@ -64,5 +67,18 @@ namespace GitHub.Runner.Common
             return RetryRequest(
                 async () => await _runServiceHttpClient.CompleteJobAsync(requestUri, planId, jobId, result, outputs, stepResults, cancellationToken), cancellationToken);
         }
+
+        public Task<RenewJobResponse> RenewJobAsync(Guid planId, Guid jobId, CancellationToken cancellationToken)
+        {
+            CheckConnection();
+            var renewJobResponse = RetryRequest<RenewJobResponse>(
+                async () => await _runServiceHttpClient.RenewJobAsync(requestUri, planId, jobId, cancellationToken), cancellationToken);
+            if (renewJobResponse == null)
+            {
+                throw new TaskOrchestrationJobNotFoundException(jobId.ToString());
+            }
+
+            return renewJobResponse;
+        }
     }
 }

src/Runner.Common/RunnerDotcomServer.cs

@@ -0,0 +1,237 @@
+using GitHub.DistributedTask.WebApi;
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using GitHub.Services.WebApi;
+using GitHub.Services.Common;
+using GitHub.Runner.Sdk;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Linq;
+
+namespace GitHub.Runner.Common
+{
+    [ServiceLocator(Default = typeof(RunnerDotcomServer))]
+    public interface IRunnerDotcomServer : IRunnerService
+    {
+        Task<List<TaskAgent>> GetRunnersAsync(int runnerGroupId, string githubUrl, string githubToken, string agentName);
+
+        Task<DistributedTask.WebApi.Runner> AddRunnerAsync(int runnerGroupId, TaskAgent agent, string githubUrl, string githubToken, string publicKey);
+        Task<List<TaskAgentPool>> GetRunnerGroupsAsync(string githubUrl, string githubToken);
+
+        string GetGitHubRequestId(HttpResponseHeaders headers);
+    }
+
+    public enum RequestType
+    {
+        Get,
+        Post,
+        Patch,
+        Delete
+    }
+
+    public class RunnerDotcomServer : RunnerService, IRunnerDotcomServer
+    {
+        private ITerminal _term;
+
+        public override void Initialize(IHostContext hostContext)
+        {
+            base.Initialize(hostContext);
+            _term = hostContext.GetService<ITerminal>();
+        }
+
+
+        public async Task<List<TaskAgent>> GetRunnersAsync(int runnerGroupId, string githubUrl, string githubToken, string agentName = null)
+        {
+            var githubApiUrl = "";
+            var gitHubUrlBuilder = new UriBuilder(githubUrl);
+            var path = gitHubUrlBuilder.Path.Split('/', '\\', StringSplitOptions.RemoveEmptyEntries);
+            if (path.Length == 1)
+            {
+                // org runner
+                if (UrlUtil.IsHostedServer(gitHubUrlBuilder))
+                {
+                    githubApiUrl = $"{gitHubUrlBuilder.Scheme}://api.{gitHubUrlBuilder.Host}/orgs/{path[0]}/actions/runner-groups/{runnerGroupId}/runners";
+                }
+                else
+                {
+                    githubApiUrl = $"{gitHubUrlBuilder.Scheme}://{gitHubUrlBuilder.Host}/api/v3/orgs/{path[0]}/actions/runner-groups/{runnerGroupId}/runners";
+                }
+            }
+            else if (path.Length == 2)
+            {
+                // repo or enterprise runner.
+                if (!string.Equals(path[0], "enterprises", StringComparison.OrdinalIgnoreCase))
+                {
+                    return null;
+                }
+
+                if (UrlUtil.IsHostedServer(gitHubUrlBuilder))
+                {
+                    githubApiUrl = $"{gitHubUrlBuilder.Scheme}://api.{gitHubUrlBuilder.Host}/{path[0]}/{path[1]}/actions/runner-groups/{runnerGroupId}/runners";
+                }
+                else
+                {
+                    githubApiUrl = $"{gitHubUrlBuilder.Scheme}://{gitHubUrlBuilder.Host}/api/v3/{path[0]}/{path[1]}/actions/runner-groups/{runnerGroupId}/runners";
+                }
+            }
+            else
+            {
+                throw new ArgumentException($"'{githubUrl}' should point to an org or enterprise.");
+            }
+
+            var runnersList = await RetryRequest<ListRunnersResponse>(githubApiUrl, githubToken, RequestType.Get, 3, "Failed to get agents pools");
+            var agents = runnersList.ToTaskAgents();
+
+            if (string.IsNullOrEmpty(agentName))
+            {
+                return agents;
+            }
+
+            return agents.Where(x => string.Equals(x.Name, agentName, StringComparison.OrdinalIgnoreCase)).ToList();
+        }
+
+        public async Task<List<TaskAgentPool>> GetRunnerGroupsAsync(string githubUrl, string githubToken)
+        {
+            var githubApiUrl = "";
+            var gitHubUrlBuilder = new UriBuilder(githubUrl);
+            var path = gitHubUrlBuilder.Path.Split('/', '\\', StringSplitOptions.RemoveEmptyEntries);
+            if (path.Length == 1)
+            {
+                // org runner
+                if (UrlUtil.IsHostedServer(gitHubUrlBuilder))
+                {
+                    githubApiUrl = $"{gitHubUrlBuilder.Scheme}://api.{gitHubUrlBuilder.Host}/orgs/{path[0]}/actions/runner-groups";
+                }
+                else
+                {
+                    githubApiUrl = $"{gitHubUrlBuilder.Scheme}://{gitHubUrlBuilder.Host}/api/v3/orgs/{path[0]}/actions/runner-groups";
+                }
+            }
+            else if (path.Length == 2)
+            {
+                // repo or enterprise runner.
+                if (!string.Equals(path[0], "enterprises", StringComparison.OrdinalIgnoreCase))
+                {
+                    return null;
+                }
+
+                if (UrlUtil.IsHostedServer(gitHubUrlBuilder))
+                {
+                    githubApiUrl = $"{gitHubUrlBuilder.Scheme}://api.{gitHubUrlBuilder.Host}/{path[0]}/{path[1]}/actions/runner-groups";
+                }
+                else
+                {
+                    githubApiUrl = $"{gitHubUrlBuilder.Scheme}://{gitHubUrlBuilder.Host}/api/v3/{path[0]}/{path[1]}/actions/runner-groups";
+                }
+            }
+            else
+            {
+                throw new ArgumentException($"'{githubUrl}' should point to an org or enterprise.");
+            }
+
+            var agentPools = await RetryRequest<RunnerGroupList>(githubApiUrl, githubToken, RequestType.Get, 3, "Failed to get agents pools");
+
+            return agentPools?.ToAgentPoolList();
+        }
+
+        public async Task<DistributedTask.WebApi.Runner> AddRunnerAsync(int runnerGroupId, TaskAgent agent, string githubUrl, string githubToken, string publicKey)
+        {
+            var gitHubUrlBuilder = new UriBuilder(githubUrl);
+            var path = gitHubUrlBuilder.Path.Split('/', '\\', StringSplitOptions.RemoveEmptyEntries);
+            string githubApiUrl;
+            if (UrlUtil.IsHostedServer(gitHubUrlBuilder))
+            {
+                githubApiUrl = $"{gitHubUrlBuilder.Scheme}://api.{gitHubUrlBuilder.Host}/actions/runners/register";
+            }
+            else
+            {
+                githubApiUrl = $"{gitHubUrlBuilder.Scheme}://{gitHubUrlBuilder.Host}/api/v3/actions/runners/register";
+            }
+
+            var bodyObject = new Dictionary<string, Object>()
+                    {
+                        {"url", githubUrl},
+                        {"group_id", runnerGroupId},
+                        {"name", agent.Name},
+                        {"version", agent.Version},
+                        {"updates_disabled", agent.DisableUpdate},
+                        {"ephemeral", agent.Ephemeral},
+                        {"labels", agent.Labels},
+                        {"public_key", publicKey}
+                    };
+
+            var body = new StringContent(StringUtil.ConvertToJson(bodyObject), null, "application/json");
+
+            return await RetryRequest<DistributedTask.WebApi.Runner>(githubApiUrl, githubToken, RequestType.Post, 3, "Failed to add agent", body);
+        }
+
+        private async Task<T> RetryRequest<T>(string githubApiUrl, string githubToken, RequestType requestType, int maxRetryAttemptsCount = 5, string errorMessage = null, StringContent body = null)
+        {
+            int retry = 0;
+            while (true)
+            {
+                retry++;
+                using (var httpClientHandler = HostContext.CreateHttpClientHandler())
+                using (var httpClient = new HttpClient(httpClientHandler))
+                {
+                    httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("RemoteAuth", githubToken);
+                    httpClient.DefaultRequestHeaders.UserAgent.AddRange(HostContext.UserAgents);
+
+                    var responseStatus = System.Net.HttpStatusCode.OK;
+                    try
+                    {
+                        HttpResponseMessage response = null;
+                        if (requestType == RequestType.Get)
+                        {
+                            response = await httpClient.GetAsync(githubApiUrl);
+                        }
+                        else
+                        {
+                            response = await httpClient.PostAsync(githubApiUrl, body);
+                        }
+
+                        if (response != null)
+                        {
+                            responseStatus = response.StatusCode;
+                            var githubRequestId = GetGitHubRequestId(response.Headers);
+
+                            if (response.IsSuccessStatusCode)
+                            {
+                                Trace.Info($"Http response code: {response.StatusCode} from '{requestType.ToString()} {githubApiUrl}' ({githubRequestId})");
+                                var jsonResponse = await response.Content.ReadAsStringAsync();
+                                return StringUtil.ConvertFromJson<T>(jsonResponse);
+                            }
+                            else
+                            {
+                                _term.WriteError($"Http response code: {response.StatusCode} from '{requestType.ToString()} {githubApiUrl}' (Request Id: {githubRequestId})");
+                                var errorResponse = await response.Content.ReadAsStringAsync();
+                                _term.WriteError(errorResponse);
+                                response.EnsureSuccessStatusCode();
+                            }
+                        }
+
+                    }
+                    catch (Exception ex) when (retry < maxRetryAttemptsCount && responseStatus != System.Net.HttpStatusCode.NotFound)
+                    {
+                        Trace.Error($"{errorMessage} -- Atempt: {retry}");
+                        Trace.Error(ex);
+                    }
+                }
+                var backOff = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(1), TimeSpan.FromSeconds(5));
+                Trace.Info($"Retrying in {backOff.Seconds} seconds");
+                await Task.Delay(backOff);
+            }
+        }
+
+        public string GetGitHubRequestId(HttpResponseHeaders headers)
+        {
+            if (headers.TryGetValues("x-github-request-id", out var headerValues))
+            {
+                return headerValues.FirstOrDefault();
+            }
+            return string.Empty;
+        }
+    }
+}

src/Runner.Common/Util/MessageUtil.cs

@@ -0,0 +1,14 @@
+namespace GitHub.Runner.Common.Util
+{
+    using System;
+    using GitHub.DistributedTask.WebApi;
+
+    public static class MessageUtil
+    {
+        public static bool IsRunServiceJob(string messageType)
+        {
+            return string.Equals(messageType, JobRequestMessageTypes.RunnerJobRequest, StringComparison.OrdinalIgnoreCase);
+        }
+    }
+}
+

src/Runner.Listener/BrokerMessageListener.cs

@@ -0,0 +1,209 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Runner.Common;
+using GitHub.Runner.Listener.Configuration;
+using GitHub.Runner.Sdk;
+using GitHub.Services.Common;
+using GitHub.Runner.Common.Util;
+using GitHub.Services.OAuth;
+
+namespace GitHub.Runner.Listener
+{
+    public sealed class BrokerMessageListener : RunnerService, IMessageListener
+    {
+        private RunnerSettings _settings;
+        private ITerminal _term;
+        private TimeSpan _getNextMessageRetryInterval;
+        private TaskAgentStatus runnerStatus = TaskAgentStatus.Online;
+        private CancellationTokenSource _getMessagesTokenSource;
+        private IBrokerServer _brokerServer;
+
+        public override void Initialize(IHostContext hostContext)
+        {
+            base.Initialize(hostContext);
+
+            _term = HostContext.GetService<ITerminal>();
+            _brokerServer = HostContext.GetService<IBrokerServer>();
+        }
+
+        public async Task<Boolean> CreateSessionAsync(CancellationToken token)
+        {
+            await RefreshBrokerConnection();
+            return await Task.FromResult(true);
+        }
+
+        public async Task DeleteSessionAsync()
+        {
+            await Task.CompletedTask;
+        }
+
+        public void OnJobStatus(object sender, JobStatusEventArgs e)
+        {
+            Trace.Info("Received job status event. JobState: {0}", e.Status);
+            runnerStatus = e.Status;
+            try
+            {
+                _getMessagesTokenSource?.Cancel();
+            }
+            catch (ObjectDisposedException)
+            {
+                Trace.Info("_getMessagesTokenSource is already disposed.");
+            }
+        }
+
+        public async Task<TaskAgentMessage> GetNextMessageAsync(CancellationToken token)
+        {
+            bool encounteringError = false;
+            int continuousError = 0;
+            Stopwatch heartbeat = new();
+            heartbeat.Restart();
+            var maxRetryCount = 10;
+
+            while (true)
+            {
+                TaskAgentMessage message = null;
+                _getMessagesTokenSource = CancellationTokenSource.CreateLinkedTokenSource(token);
+                try
+                {
+                    message = await _brokerServer.GetRunnerMessageAsync(_getMessagesTokenSource.Token, runnerStatus, BuildConstants.RunnerPackage.Version);
+
+                    if (message == null)
+                    {
+                        continue;
+                    }
+
+                    return message;
+                }
+                catch (OperationCanceledException) when (_getMessagesTokenSource.Token.IsCancellationRequested && !token.IsCancellationRequested)
+                {
+                    Trace.Info("Get messages has been cancelled using local token source. Continue to get messages with new status.");
+                    continue;
+                }
+                catch (OperationCanceledException) when (token.IsCancellationRequested)
+                {
+                    Trace.Info("Get next message has been cancelled.");
+                    throw;
+                }
+                catch (TaskAgentAccessTokenExpiredException)
+                {
+                    Trace.Info("Runner OAuth token has been revoked. Unable to pull message.");
+                    throw;
+                }
+                catch (AccessDeniedException e) when (e.InnerException is InvalidTaskAgentVersionException)
+                {
+                    throw;
+                }
+                catch (Exception ex)
+                {
+                    Trace.Error("Catch exception during get next message.");
+                    Trace.Error(ex);
+
+                    if (!IsGetNextMessageExceptionRetriable(ex))
+                    {
+                        throw;
+                    }
+                    else
+                    {
+                        continuousError++;
+                        //retry after a random backoff to avoid service throttling
+                        //in case of there is a service error happened and all agents get kicked off of the long poll and all agent try to reconnect back at the same time.
+                        if (continuousError <= 5)
+                        {
+                            // random backoff [15, 30]
+                            _getNextMessageRetryInterval = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(15), TimeSpan.FromSeconds(30), _getNextMessageRetryInterval);
+                        }
+                        else if (continuousError >= maxRetryCount)
+                        {
+                            throw;
+                        }
+                        else
+                        {
+                            // more aggressive backoff [30, 60]
+                            _getNextMessageRetryInterval = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(30), TimeSpan.FromSeconds(60), _getNextMessageRetryInterval);
+                        }
+
+                        if (!encounteringError)
+                        {
+                            //print error only on the first consecutive error
+                            _term.WriteError($"{DateTime.UtcNow:u}: Runner connect error: {ex.Message}. Retrying until reconnected.");
+                            encounteringError = true;
+                        }
+
+                        // re-create VssConnection before next retry
+                        await RefreshBrokerConnection();
+
+                        Trace.Info("Sleeping for {0} seconds before retrying.", _getNextMessageRetryInterval.TotalSeconds);
+                        await HostContext.Delay(_getNextMessageRetryInterval, token);
+                    }
+                }
+                finally
+                {
+                    _getMessagesTokenSource.Dispose();
+                }
+
+                if (message == null)
+                {
+                    if (heartbeat.Elapsed > TimeSpan.FromMinutes(30))
+                    {
+                        Trace.Info($"No message retrieved within last 30 minutes.");
+                        heartbeat.Restart();
+                    }
+                    else
+                    {
+                        Trace.Verbose($"No message retrieved.");
+                    }
+
+                    continue;
+                }
+
+                Trace.Info($"Message '{message.MessageId}' received.");
+            }
+        }
+
+        public async Task DeleteMessageAsync(TaskAgentMessage message)
+        {
+            await Task.CompletedTask;
+        }
+
+        private bool IsGetNextMessageExceptionRetriable(Exception ex)
+        {
+            if (ex is TaskAgentNotFoundException ||
+                ex is TaskAgentPoolNotFoundException ||
+                ex is TaskAgentSessionExpiredException ||
+                ex is AccessDeniedException ||
+                ex is VssUnauthorizedException)
+            {
+                Trace.Info($"Non-retriable exception: {ex.Message}");
+                return false;
+            }
+            else
+            {
+                Trace.Info($"Retriable exception: {ex.Message}");
+                return true;
+            }
+        }
+
+        private async Task RefreshBrokerConnection()
+        {
+            var configManager = HostContext.GetService<IConfigurationManager>();
+            _settings = configManager.LoadSettings();
+
+            if (_settings.ServerUrlV2 == null)
+            {
+                throw new InvalidOperationException("ServerUrlV2 is not set");
+            }
+
+            var credMgr = HostContext.GetService<ICredentialManager>();
+            VssCredentials creds = credMgr.LoadCredentials();
+            await _brokerServer.ConnectAsync(new Uri(_settings.ServerUrlV2), creds);
+        }
+    }
+}

src/Runner.Listener/Configuration/ConfigurationManager.cs

@@ -31,12 +31,14 @@ namespace GitHub.Runner.Listener.Configuration
     {
         private IConfigurationStore _store;
         private IRunnerServer _runnerServer;
+        private IRunnerDotcomServer _dotcomServer;
         private ITerminal _term;
 
         public override void Initialize(IHostContext hostContext)
         {
             base.Initialize(hostContext);
             _runnerServer = HostContext.GetService<IRunnerServer>();
+            _dotcomServer = HostContext.GetService<IRunnerDotcomServer>();
             Trace.Verbose("Creating _store");
             _store = hostContext.GetService<IConfigurationStore>();
             Trace.Verbose("store created");
@@ -113,6 +115,7 @@ namespace GitHub.Runner.Listener.Configuration
             ICredentialProvider credProvider = null;
             VssCredentials creds = null;
             _term.WriteSection("Authentication");
+            string registerToken = string.Empty;
             while (true)
             {
                 // When testing against a dev deployment of Actions Service, set this environment variable
@@ -130,9 +133,11 @@ namespace GitHub.Runner.Listener.Configuration
                 else
                 {
                     runnerSettings.GitHubUrl = inputUrl;
-                    var registerToken = await GetRunnerTokenAsync(command, inputUrl, "registration");
+                    registerToken = await GetRunnerTokenAsync(command, inputUrl, "registration");
                     GitHubAuthResult authResult = await GetTenantCredential(inputUrl, registerToken, Constants.RunnerEvent.Register);
                     runnerSettings.ServerUrl = authResult.TenantUrl;
+                    runnerSettings.UseV2Flow = authResult.UseV2Flow;
+                    _term.WriteLine($"Using V2 flow: {runnerSettings.UseV2Flow}");
                     creds = authResult.ToVssCredentials();
                     Trace.Info("cred retrieved via GitHub auth");
                 }
@@ -176,9 +181,11 @@ namespace GitHub.Runner.Listener.Configuration
             // We want to use the native CSP of the platform for storage, so we use the RSACSP directly
             RSAParameters publicKey;
             var keyManager = HostContext.GetService<IRSAKeyManager>();
+            string publicKeyXML;
             using (var rsa = keyManager.CreateKey())
             {
                 publicKey = rsa.ExportParameters(false);
+                publicKeyXML = rsa.ToXmlString(includePrivateParameters: false);
             }
 
             _term.WriteSection("Runner Registration");
@@ -186,9 +193,17 @@ namespace GitHub.Runner.Listener.Configuration
             // If we have more than one runner group available, allow the user to specify which one to be added into
             string poolName = null;
             TaskAgentPool agentPool = null;
-            List<TaskAgentPool> agentPools = await _runnerServer.GetAgentPoolsAsync();
-            TaskAgentPool defaultPool = agentPools?.Where(x => x.IsInternal).FirstOrDefault();
+            List<TaskAgentPool> agentPools;
+            if (runnerSettings.UseV2Flow)
+            {
+                agentPools = await _dotcomServer.GetRunnerGroupsAsync(runnerSettings.GitHubUrl, registerToken);
+            }
+            else
+            {
+                agentPools = await _runnerServer.GetAgentPoolsAsync();
+            }
 
+            TaskAgentPool defaultPool = agentPools?.Where(x => x.IsInternal).FirstOrDefault();
             if (agentPools?.Where(x => !x.IsHosted).Count() > 0)
             {
                 poolName = command.GetRunnerGroupName(defaultPool?.Name);
@@ -226,8 +241,16 @@ namespace GitHub.Runner.Listener.Configuration
 
                 var userLabels = command.GetLabels();
                 _term.WriteLine();
+                List<TaskAgent> agents;
+                if (runnerSettings.UseV2Flow)
+                {
+                    agents = await _dotcomServer.GetRunnersAsync(runnerSettings.PoolId, runnerSettings.GitHubUrl, registerToken, runnerSettings.AgentName);
+                }
+                else
+                {
+                    agents = await _runnerServer.GetAgentsAsync(runnerSettings.PoolId, runnerSettings.AgentName);
+                }
 
-                var agents = await _runnerServer.GetAgentsAsync(runnerSettings.PoolId, runnerSettings.AgentName);
                 Trace.Verbose("Returns {0} agents", agents.Count);
                 agent = agents.FirstOrDefault();
                 if (agent != null)
@@ -274,7 +297,23 @@ namespace GitHub.Runner.Listener.Configuration
 
                     try
                     {
-                        agent = await _runnerServer.AddAgentAsync(runnerSettings.PoolId, agent);
+                        if (runnerSettings.UseV2Flow)
+                        {
+                            var runner = await _dotcomServer.AddRunnerAsync(runnerSettings.PoolId, agent, runnerSettings.GitHubUrl, registerToken, publicKeyXML);
+                            runnerSettings.ServerUrlV2 = runner.RunnerAuthorization.ServerUrl;
+
+                            agent.Id = runner.Id;
+                            agent.Authorization = new TaskAgentAuthorization()
+                            {
+                                AuthorizationUrl = runner.RunnerAuthorization.AuthorizationUrl,
+                                ClientId = new Guid(runner.RunnerAuthorization.ClientId)
+                            };
+                        }
+                        else
+                        {
+                            agent = await _runnerServer.AddAgentAsync(runnerSettings.PoolId, agent);
+                        }
+
                         if (command.DisableUpdate &&
                             command.DisableUpdate != agent.DisableUpdate)
                         {
@@ -325,24 +364,28 @@ namespace GitHub.Runner.Listener.Configuration
             }
 
             // Testing agent connection, detect any potential connection issue, like local clock skew that cause OAuth token expired.
-            var credMgr = HostContext.GetService<ICredentialManager>();
-            VssCredentials credential = credMgr.LoadCredentials();
-            try
+
+            if (!runnerSettings.UseV2Flow)
             {
-                await _runnerServer.ConnectAsync(new Uri(runnerSettings.ServerUrl), credential);
-                // ConnectAsync() hits _apis/connectionData which is an anonymous endpoint
-                // Need to hit an authenticate endpoint to trigger OAuth token exchange.
-                await _runnerServer.GetAgentPoolsAsync();
-                _term.WriteSuccessMessage("Runner connection is good");
-            }
-            catch (VssOAuthTokenRequestException ex) when (ex.Message.Contains("Current server time is"))
-            {
-                // there are two exception messages server send that indicate clock skew.
-                // 1. The bearer token expired on {jwt.ValidTo}. Current server time is {DateTime.UtcNow}.
-                // 2. The bearer token is not valid until {jwt.ValidFrom}. Current server time is {DateTime.UtcNow}.
-                Trace.Error("Catch exception during test agent connection.");
-                Trace.Error(ex);
-                throw new Exception("The local machine's clock may be out of sync with the server time by more than five minutes. Please sync your clock with your domain or internet time and try again.");
+                var credMgr = HostContext.GetService<ICredentialManager>();
+                VssCredentials credential = credMgr.LoadCredentials();
+                try
+                {
+                    await _runnerServer.ConnectAsync(new Uri(runnerSettings.ServerUrl), credential);
+                    // ConnectAsync() hits _apis/connectionData which is an anonymous endpoint
+                    // Need to hit an authenticate endpoint to trigger OAuth token exchange.
+                    await _runnerServer.GetAgentPoolsAsync();
+                    _term.WriteSuccessMessage("Runner connection is good");
+                }
+                catch (VssOAuthTokenRequestException ex) when (ex.Message.Contains("Current server time is"))
+                {
+                    // there are two exception messages server send that indicate clock skew.
+                    // 1. The bearer token expired on {jwt.ValidTo}. Current server time is {DateTime.UtcNow}.
+                    // 2. The bearer token is not valid until {jwt.ValidFrom}. Current server time is {DateTime.UtcNow}.
+                    Trace.Error("Catch exception during test agent connection.");
+                    Trace.Error(ex);
+                    throw new Exception("The local machine's clock may be out of sync with the server time by more than five minutes. Please sync your clock with your domain or internet time and try again.");
+                }
             }
 
             _term.WriteSection("Runner settings");
@@ -652,7 +695,7 @@ namespace GitHub.Runner.Listener.Configuration
                     {
                         var response = await httpClient.PostAsync(githubApiUrl, new StringContent(string.Empty));
                         responseStatus = response.StatusCode;
-                        var githubRequestId = GetGitHubRequestId(response.Headers);
+                        var githubRequestId = _dotcomServer.GetGitHubRequestId(response.Headers);
 
                         if (response.IsSuccessStatusCode)
                         {
@@ -715,7 +758,7 @@ namespace GitHub.Runner.Listener.Configuration
                     {
                         var response = await httpClient.PostAsync(githubApiUrl, new StringContent(StringUtil.ConvertToJson(bodyObject), null, "application/json"));
                         responseStatus = response.StatusCode;
-                        var githubRequestId = GetGitHubRequestId(response.Headers);
+                        var githubRequestId = _dotcomServer.GetGitHubRequestId(response.Headers);
 
                         if (response.IsSuccessStatusCode)
                         {
@@ -744,14 +787,5 @@ namespace GitHub.Runner.Listener.Configuration
             }
             return null;
         }
-
-        private string GetGitHubRequestId(HttpResponseHeaders headers)
-        {
-            if (headers.TryGetValues("x-github-request-id", out var headerValues))
-            {
-                return headerValues.FirstOrDefault();
-            }
-            return string.Empty;
-        }
     }
 }

src/Runner.Listener/Configuration/CredentialManager.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Runtime.Serialization;
 using GitHub.Runner.Common;
@@ -20,8 +20,8 @@ namespace GitHub.Runner.Listener.Configuration
     {
         public static readonly Dictionary<string, Type> CredentialTypes = new(StringComparer.OrdinalIgnoreCase)
         {
-            { Constants.Configuration.OAuth, typeof(OAuthCredential)},
-            { Constants.Configuration.OAuthAccessToken, typeof(OAuthAccessTokenCredential)},
+            { Constants.Configuration.OAuth, typeof(OAuthCredential) },
+            { Constants.Configuration.OAuthAccessToken, typeof(OAuthAccessTokenCredential) },
         };
 
         public ICredentialProvider GetCredentialProvider(string credType)
@@ -93,6 +93,9 @@ namespace GitHub.Runner.Listener.Configuration
         [DataMember(Name = "token")]
         public string Token { get; set; }
 
+        [DataMember(Name = "use_v2_flow")]
+        public bool UseV2Flow { get; set; }
+
         public VssCredentials ToVssCredentials()
         {
             ArgUtil.NotNullOrEmpty(TokenSchema, nameof(TokenSchema));

src/Runner.Listener/InternalsVisibleTo.cs

@@ -0,0 +1,3 @@
+using System.Runtime.CompilerServices;
+
+[assembly: InternalsVisibleTo("Test")]

src/Runner.Listener/JobDispatcher.cs

@@ -7,6 +7,7 @@ using System.Text;
 using System.Text.RegularExpressions;
 using System.Threading;
 using System.Threading.Tasks;
+using GitHub.DistributedTask.Pipelines;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Common;
 using GitHub.Runner.Common.Util;
@@ -58,6 +59,8 @@ namespace GitHub.Runner.Listener
 
         public event EventHandler<JobStatusEventArgs> JobStatus;
 
+        private bool _isRunServiceJob;
+
         public override void Initialize(IHostContext hostContext)
         {
             base.Initialize(hostContext);
@@ -86,6 +89,8 @@ namespace GitHub.Runner.Listener
         {
             Trace.Info($"Job request {jobRequestMessage.RequestId} for plan {jobRequestMessage.Plan.PlanId} job {jobRequestMessage.JobId} received.");
 
+            _isRunServiceJob = MessageUtil.IsRunServiceJob(jobRequestMessage.MessageType);
+
             WorkerDispatcher currentDispatch = null;
             if (_jobDispatchedQueue.Count > 0)
             {
@@ -239,6 +244,13 @@ namespace GitHub.Runner.Listener
                     return;
                 }
 
+                if (this._isRunServiceJob)
+                {
+                    Trace.Error($"We are not yet checking the state of jobrequest {jobDispatch.JobId} status. Cancel running worker right away.");
+                    jobDispatch.WorkerCancellationTokenSource.Cancel();
+                    return;
+                }
+
                 // based on the current design, server will only send one job for a given runner at a time.
                 // if the runner received a new job request while a previous job request is still running, this typically indicates two situations
                 // 1. a runner bug caused a server and runner mismatch on the state of the job request, e.g. the runner didn't renew the jobrequest
@@ -367,9 +379,11 @@ namespace GitHub.Runner.Listener
                     long requestId = message.RequestId;
                     Guid lockToken = Guid.Empty; // lockToken has never been used, keep this here of compat
 
+                    var systemConnection = message.Resources.Endpoints.SingleOrDefault(x => string.Equals(x.Name, WellKnownServiceEndpointNames.SystemVssConnection, StringComparison.OrdinalIgnoreCase));
+
                     // start renew job request
                     Trace.Info($"Start renew job request {requestId} for job {message.JobId}.");
-                    Task renewJobRequest = RenewJobRequestAsync(_poolId, requestId, lockToken, orchestrationId, firstJobRequestRenewed, lockRenewalTokenSource.Token);
+                    Task renewJobRequest = RenewJobRequestAsync(message, systemConnection, _poolId, requestId, lockToken, orchestrationId, firstJobRequestRenewed, lockRenewalTokenSource.Token);
 
                     // wait till first renew succeed or job request is cancelled
                     // not even start worker if the first renew fail
@@ -426,7 +440,7 @@ namespace GitHub.Runner.Listener
                                                 {
                                                     workerOutput.Add(stdout.Data);
                                                 }
-                                                
+
                                                 if (printToStdout)
                                                 {
                                                     term.WriteLine(stdout.Data, skipTracing: true);
@@ -508,7 +522,6 @@ namespace GitHub.Runner.Listener
 
                         // we get first jobrequest renew succeed and start the worker process with the job message.
                         // send notification to machine provisioner.
-                        var systemConnection = message.Resources.Endpoints.SingleOrDefault(x => string.Equals(x.Name, WellKnownServiceEndpointNames.SystemVssConnection, StringComparison.OrdinalIgnoreCase));
                         var accessToken = systemConnection?.Authorization?.Parameters["AccessToken"];
                         notification.JobStarted(message.JobId, accessToken, systemConnection.Url);
 
@@ -531,11 +544,8 @@ namespace GitHub.Runner.Listener
                                     detailInfo = string.Join(Environment.NewLine, workerOutput);
                                     Trace.Info($"Return code {returnCode} indicate worker encounter an unhandled exception or app crash, attach worker stdout/stderr to JobRequest result.");
 
-                                    var jobServer = HostContext.GetService<IJobServer>();
-                                    VssCredentials jobServerCredential = VssUtil.GetVssCredential(systemConnection);
-                                    VssConnection jobConnection = VssUtil.CreateConnection(systemConnection.Url, jobServerCredential);
-                                    await jobServer.ConnectAsync(jobConnection);
 
+                                    var jobServer = await InitializeJobServerAsync(systemConnection);
                                     await LogWorkerProcessUnhandledException(jobServer, message, detailInfo);
 
                                     // Go ahead to finish the job with result 'Failed' if the STDERR from worker is System.IO.IOException, since it typically means we are running out of disk space.
@@ -675,9 +685,128 @@ namespace GitHub.Runner.Listener
             }
         }
 
-        public async Task RenewJobRequestAsync(int poolId, long requestId, Guid lockToken, string orchestrationId, TaskCompletionSource<int> firstJobRequestRenewed, CancellationToken token)
+        internal async Task RenewJobRequestAsync(Pipelines.AgentJobRequestMessage message, ServiceEndpoint systemConnection, int poolId, long requestId, Guid lockToken, string orchestrationId, TaskCompletionSource<int> firstJobRequestRenewed, CancellationToken token)
+        {
+            if (this._isRunServiceJob)
+            {
+                var runServer = await GetRunServerAsync(systemConnection);
+                await RenewJobRequestAsync(runServer, message.Plan.PlanId, message.JobId, firstJobRequestRenewed, token);
+            }
+            else
+            {
+                var runnerServer = HostContext.GetService<IRunnerServer>();
+                await RenewJobRequestAsync(runnerServer, poolId, requestId, lockToken, orchestrationId, firstJobRequestRenewed, token);
+            }
+        }
+
+        private async Task RenewJobRequestAsync(IRunServer runServer, Guid planId, Guid jobId, TaskCompletionSource<int> firstJobRequestRenewed, CancellationToken token)
+        {
+            TaskAgentJobRequest request = null;
+            int firstRenewRetryLimit = 5;
+            int encounteringError = 0;
+
+            // renew lock during job running.
+            // stop renew only if cancellation token for lock renew task been signal or exception still happen after retry.
+            while (!token.IsCancellationRequested)
+            {
+                try
+                {
+                    var renewResponse = await runServer.RenewJobAsync(planId, jobId, token);
+                    Trace.Info($"Successfully renew job {jobId}, job is valid till {renewResponse.LockedUntil}");
+
+                    if (!firstJobRequestRenewed.Task.IsCompleted)
+                    {
+                        // fire first renew succeed event.
+                        firstJobRequestRenewed.TrySetResult(0);
+                    }
+
+                    if (encounteringError > 0)
+                    {
+                        encounteringError = 0;
+                        HostContext.WritePerfCounter("JobRenewRecovered");
+                    }
+
+                    // renew again after 60 sec delay
+                    await HostContext.Delay(TimeSpan.FromSeconds(60), token);
+                }
+                catch (TaskOrchestrationJobNotFoundException)
+                {
+                    // no need for retry. the job is not valid anymore.
+                    Trace.Info($"TaskAgentJobNotFoundException received when renew job {jobId}, job is no longer valid, stop renew job request.");
+                    return;
+                }
+                catch (OperationCanceledException) when (token.IsCancellationRequested)
+                {
+                    // OperationCanceledException may caused by http timeout or _lockRenewalTokenSource.Cance();
+                    // Stop renew only on cancellation token fired.
+                    Trace.Info($"job renew has been cancelled, stop renew job {jobId}.");
+                    return;
+                }
+                catch (Exception ex)
+                {
+                    Trace.Error($"Catch exception during renew runner job {jobId}.");
+                    Trace.Error(ex);
+                    encounteringError++;
+
+                    // retry
+                    TimeSpan remainingTime = TimeSpan.Zero;
+                    if (!firstJobRequestRenewed.Task.IsCompleted)
+                    {
+                        // retry 5 times every 10 sec for the first renew
+                        if (firstRenewRetryLimit-- > 0)
+                        {
+                            remainingTime = TimeSpan.FromSeconds(10);
+                        }
+                    }
+                    else
+                    {
+                        // retry till reach lockeduntil + 5 mins extra buffer.
+                        remainingTime = request.LockedUntil.Value + TimeSpan.FromMinutes(5) - DateTime.UtcNow;
+                    }
+
+                    if (remainingTime > TimeSpan.Zero)
+                    {
+                        TimeSpan delayTime;
+                        if (!firstJobRequestRenewed.Task.IsCompleted)
+                        {
+                            Trace.Info($"Retrying lock renewal for job {jobId}. The first job renew request has failed.");
+                            delayTime = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(1), TimeSpan.FromSeconds(10));
+                        }
+                        else
+                        {
+                            Trace.Info($"Retrying lock renewal for job {jobId}. Job is valid until {request.LockedUntil.Value}.");
+                            if (encounteringError > 5)
+                            {
+                                delayTime = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(15), TimeSpan.FromSeconds(30));
+                            }
+                            else
+                            {
+                                delayTime = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(5), TimeSpan.FromSeconds(15));
+                            }
+                        }
+
+                        try
+                        {
+                            // back-off before next retry.
+                            await HostContext.Delay(delayTime, token);
+                        }
+                        catch (OperationCanceledException) when (token.IsCancellationRequested)
+                        {
+                            Trace.Info($"job renew has been cancelled, stop renew job {jobId}.");
+                        }
+                    }
+                    else
+                    {
+                        Trace.Info($"Lock renewal has run out of retry, stop renew lock for job {jobId}.");
+                        HostContext.WritePerfCounter("JobRenewReachLimit");
+                        return;
+                    }
+                }
+            }
+        }
+
+        private async Task RenewJobRequestAsync(IRunnerServer runnerServer, int poolId, long requestId, Guid lockToken, string orchestrationId, TaskCompletionSource<int> firstJobRequestRenewed, CancellationToken token)
         {
-            var runnerServer = HostContext.GetService<IRunnerServer>();
             TaskAgentJobRequest request = null;
             int firstRenewRetryLimit = 5;
             int encounteringError = 0;
@@ -840,90 +969,93 @@ namespace GitHub.Runner.Listener
                 var systemConnection = message.Resources.Endpoints.SingleOrDefault(x => string.Equals(x.Name, WellKnownServiceEndpointNames.SystemVssConnection));
                 ArgUtil.NotNull(systemConnection, nameof(systemConnection));
 
-                var jobServer = HostContext.GetService<IJobServer>();
-                VssCredentials jobServerCredential = VssUtil.GetVssCredential(systemConnection);
-                VssConnection jobConnection = VssUtil.CreateConnection(systemConnection.Url, jobServerCredential);
+                var server = await InitializeJobServerAsync(systemConnection);
 
-                await jobServer.ConnectAsync(jobConnection);
-
-                var timeline = await jobServer.GetTimelineAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, message.Timeline.Id, CancellationToken.None);
-
-                var updatedRecords = new List<TimelineRecord>();
-                var logPages = new Dictionary<Guid, Dictionary<int, string>>();
-                var logRecords = new Dictionary<Guid, TimelineRecord>();
-                foreach (var log in logs)
+                if (server is IJobServer jobServer)
                 {
-                    var logName = Path.GetFileNameWithoutExtension(log);
-                    var logNameParts = logName.Split('_', StringSplitOptions.RemoveEmptyEntries);
-                    if (logNameParts.Length != 3)
-                    {
-                        Trace.Warning($"log file '{log}' doesn't follow naming convension 'GUID_GUID_INT'.");
-                        continue;
-                    }
-                    var logPageSeperator = logName.IndexOf('_');
-                    var logRecordId = Guid.Empty;
-                    var pageNumber = 0;
+                    var timeline = await jobServer.GetTimelineAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, message.Timeline.Id, CancellationToken.None);
 
-                    if (!Guid.TryParse(logNameParts[0], out Guid timelineId) || timelineId != timeline.Id)
+                    var updatedRecords = new List<TimelineRecord>();
+                    var logPages = new Dictionary<Guid, Dictionary<int, string>>();
+                    var logRecords = new Dictionary<Guid, TimelineRecord>();
+                    foreach (var log in logs)
                     {
-                        Trace.Warning($"log file '{log}' is not belongs to current job");
-                        continue;
-                    }
-
-                    if (!Guid.TryParse(logNameParts[1], out logRecordId))
-                    {
-                        Trace.Warning($"log file '{log}' doesn't follow naming convension 'GUID_GUID_INT'.");
-                        continue;
-                    }
-
-                    if (!int.TryParse(logNameParts[2], out pageNumber))
-                    {
-                        Trace.Warning($"log file '{log}' doesn't follow naming convension 'GUID_GUID_INT'.");
-                        continue;
-                    }
-
-                    var record = timeline.Records.FirstOrDefault(x => x.Id == logRecordId);
-                    if (record != null)
-                    {
-                        if (!logPages.ContainsKey(record.Id))
+                        var logName = Path.GetFileNameWithoutExtension(log);
+                        var logNameParts = logName.Split('_', StringSplitOptions.RemoveEmptyEntries);
+                        if (logNameParts.Length != 3)
                         {
-                            logPages[record.Id] = new Dictionary<int, string>();
-                            logRecords[record.Id] = record;
+                            Trace.Warning($"log file '{log}' doesn't follow naming convension 'GUID_GUID_INT'.");
+                            continue;
+                        }
+                        var logPageSeperator = logName.IndexOf('_');
+                        var logRecordId = Guid.Empty;
+                        var pageNumber = 0;
+
+                        if (!Guid.TryParse(logNameParts[0], out Guid timelineId) || timelineId != timeline.Id)
+                        {
+                            Trace.Warning($"log file '{log}' is not belongs to current job");
+                            continue;
                         }
 
-                        logPages[record.Id][pageNumber] = log;
-                    }
-                }
-
-                foreach (var pages in logPages)
-                {
-                    var record = logRecords[pages.Key];
-                    if (record.Log == null)
-                    {
-                        // Create the log
-                        record.Log = await jobServer.CreateLogAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, new TaskLog(String.Format(@"logs\{0:D}", record.Id)), default(CancellationToken));
-
-                        // Need to post timeline record updates to reflect the log creation
-                        updatedRecords.Add(record.Clone());
-                    }
-
-                    for (var i = 1; i <= pages.Value.Count; i++)
-                    {
-                        var logFile = pages.Value[i];
-                        // Upload the contents
-                        using (FileStream fs = File.Open(logFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
+                        if (!Guid.TryParse(logNameParts[1], out logRecordId))
                         {
-                            var logUploaded = await jobServer.AppendLogContentAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, record.Log.Id, fs, default(CancellationToken));
+                            Trace.Warning($"log file '{log}' doesn't follow naming convension 'GUID_GUID_INT'.");
+                            continue;
                         }
 
-                        Trace.Info($"Uploaded unfinished log '{logFile}' for current job.");
-                        IOUtil.DeleteFile(logFile);
+                        if (!int.TryParse(logNameParts[2], out pageNumber))
+                        {
+                            Trace.Warning($"log file '{log}' doesn't follow naming convension 'GUID_GUID_INT'.");
+                            continue;
+                        }
+
+                        var record = timeline.Records.FirstOrDefault(x => x.Id == logRecordId);
+                        if (record != null)
+                        {
+                            if (!logPages.ContainsKey(record.Id))
+                            {
+                                logPages[record.Id] = new Dictionary<int, string>();
+                                logRecords[record.Id] = record;
+                            }
+
+                            logPages[record.Id][pageNumber] = log;
+                        }
+                    }
+
+                    foreach (var pages in logPages)
+                    {
+                        var record = logRecords[pages.Key];
+                        if (record.Log == null)
+                        {
+                            // Create the log
+                            record.Log = await jobServer.CreateLogAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, new TaskLog(String.Format(@"logs\{0:D}", record.Id)), default(CancellationToken));
+
+                            // Need to post timeline record updates to reflect the log creation
+                            updatedRecords.Add(record.Clone());
+                        }
+
+                        for (var i = 1; i <= pages.Value.Count; i++)
+                        {
+                            var logFile = pages.Value[i];
+                            // Upload the contents
+                            using (FileStream fs = File.Open(logFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
+                            {
+                                var logUploaded = await jobServer.AppendLogContentAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, record.Log.Id, fs, default(CancellationToken));
+                            }
+
+                            Trace.Info($"Uploaded unfinished log '{logFile}' for current job.");
+                            IOUtil.DeleteFile(logFile);
+                        }
+                    }
+
+                    if (updatedRecords.Count > 0)
+                    {
+                        await jobServer.UpdateTimelineRecordsAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, message.Timeline.Id, updatedRecords, CancellationToken.None);
                     }
                 }
-
-                if (updatedRecords.Count > 0)
+                else
                 {
-                    await jobServer.UpdateTimelineRecordsAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, message.Timeline.Id, updatedRecords, CancellationToken.None);
+                    Trace.Info("Job server does not support log upload yet.");
                 }
             }
             catch (Exception ex)
@@ -943,6 +1075,12 @@ namespace GitHub.Runner.Listener
                 return;
             }
 
+            if (this._isRunServiceJob)
+            {
+                Trace.Verbose($"Skip FinishAgentRequest call from Listener because MessageType is {message.MessageType}");
+                return;
+            }
+
             var runnerServer = HostContext.GetService<IRunnerServer>();
             int completeJobRequestRetryLimit = 5;
             List<Exception> exceptions = new();
@@ -979,66 +1117,117 @@ namespace GitHub.Runner.Listener
         }
 
         // log an error issue to job level timeline record
-        private async Task LogWorkerProcessUnhandledException(IJobServer jobServer, Pipelines.AgentJobRequestMessage message, string errorMessage)
+        private async Task LogWorkerProcessUnhandledException(IRunnerService server, Pipelines.AgentJobRequestMessage message, string errorMessage)
         {
-            try
+            if (server is IJobServer jobServer)
             {
-                var timeline = await jobServer.GetTimelineAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, message.Timeline.Id, CancellationToken.None);
-                ArgUtil.NotNull(timeline, nameof(timeline));
-
-                TimelineRecord jobRecord = timeline.Records.FirstOrDefault(x => x.Id == message.JobId && x.RecordType == "Job");
-                ArgUtil.NotNull(jobRecord, nameof(jobRecord));
-
                 try
                 {
-                    if (!string.IsNullOrEmpty(errorMessage) &&
-                        message.Variables.TryGetValue("DistributedTask.EnableRunnerIPCDebug", out var enableRunnerIPCDebug) &&
-                        StringUtil.ConvertToBoolean(enableRunnerIPCDebug.Value))
+                    var timeline = await jobServer.GetTimelineAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, message.Timeline.Id, CancellationToken.None);
+                    ArgUtil.NotNull(timeline, nameof(timeline));
+
+                    TimelineRecord jobRecord = timeline.Records.FirstOrDefault(x => x.Id == message.JobId && x.RecordType == "Job");
+                    ArgUtil.NotNull(jobRecord, nameof(jobRecord));
+
+                    try
                     {
-                        // the trace should be best effort and not affect any job result
-                        var match = _invalidJsonRegex.Match(errorMessage);
-                        if (match.Success &&
-                            match.Groups.Count == 2)
+                        if (!string.IsNullOrEmpty(errorMessage) &&
+                            message.Variables.TryGetValue("DistributedTask.EnableRunnerIPCDebug", out var enableRunnerIPCDebug) &&
+                            StringUtil.ConvertToBoolean(enableRunnerIPCDebug.Value))
                         {
-                            var jsonPosition = int.Parse(match.Groups[1].Value);
-                            var serializedJobMessage = JsonUtility.ToString(message);
-                            var originalJson = serializedJobMessage.Substring(jsonPosition - 10, 20);
-                            errorMessage = $"Runner sent Json at position '{jsonPosition}': {originalJson} ({Convert.ToBase64String(Encoding.UTF8.GetBytes(originalJson))})\n{errorMessage}";
+                            // the trace should be best effort and not affect any job result
+                            var match = _invalidJsonRegex.Match(errorMessage);
+                            if (match.Success &&
+                                match.Groups.Count == 2)
+                            {
+                                var jsonPosition = int.Parse(match.Groups[1].Value);
+                                var serializedJobMessage = JsonUtility.ToString(message);
+                                var originalJson = serializedJobMessage.Substring(jsonPosition - 10, 20);
+                                errorMessage = $"Runner sent Json at position '{jsonPosition}': {originalJson} ({Convert.ToBase64String(Encoding.UTF8.GetBytes(originalJson))})\n{errorMessage}";
+                            }
                         }
                     }
+                    catch (Exception ex)
+                    {
+                        Trace.Error(ex);
+                        errorMessage = $"Fail to check json IPC error: {ex.Message}\n{errorMessage}";
+                    }
+
+                    var unhandledExceptionIssue = new Issue() { Type = IssueType.Error, Message = errorMessage };
+                    unhandledExceptionIssue.Data[Constants.Runner.InternalTelemetryIssueDataKey] = Constants.Runner.WorkerCrash;
+                    jobRecord.ErrorCount++;
+                    jobRecord.Issues.Add(unhandledExceptionIssue);
+                    await jobServer.UpdateTimelineRecordsAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, message.Timeline.Id, new TimelineRecord[] { jobRecord }, CancellationToken.None);
                 }
                 catch (Exception ex)
                 {
+                    Trace.Error("Fail to report unhandled exception from Runner.Worker process");
                     Trace.Error(ex);
-                    errorMessage = $"Fail to check json IPC error: {ex.Message}\n{errorMessage}";
                 }
-
-                var unhandledExceptionIssue = new Issue() { Type = IssueType.Error, Message = errorMessage };
-                unhandledExceptionIssue.Data[Constants.Runner.InternalTelemetryIssueDataKey] = Constants.Runner.WorkerCrash;
-                jobRecord.ErrorCount++;
-                jobRecord.Issues.Add(unhandledExceptionIssue);
-                await jobServer.UpdateTimelineRecordsAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, message.Timeline.Id, new TimelineRecord[] { jobRecord }, CancellationToken.None);
             }
-            catch (Exception ex)
+            else
             {
-                Trace.Error("Fail to report unhandled exception from Runner.Worker process");
-                Trace.Error(ex);
+                Trace.Info("Job server does not support handling unhandled exception yet, error message: {0}", errorMessage);
+                return;
             }
         }
 
         // raise job completed event to fail the job.
-        private async Task ForceFailJob(IJobServer jobServer, Pipelines.AgentJobRequestMessage message)
+        private async Task ForceFailJob(IRunnerService server, Pipelines.AgentJobRequestMessage message)
         {
-            try
+            if (server is IJobServer jobServer)
             {
-                var jobCompletedEvent = new JobCompletedEvent(message.RequestId, message.JobId, TaskResult.Failed);
-                await jobServer.RaisePlanEventAsync<JobCompletedEvent>(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, jobCompletedEvent, CancellationToken.None);
+                try
+                {
+                    var jobCompletedEvent = new JobCompletedEvent(message.RequestId, message.JobId, TaskResult.Failed);
+                    await jobServer.RaisePlanEventAsync<JobCompletedEvent>(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, jobCompletedEvent, CancellationToken.None);
+                }
+                catch (Exception ex)
+                {
+                    Trace.Error("Fail to raise JobCompletedEvent back to service.");
+                    Trace.Error(ex);
+                }
             }
-            catch (Exception ex)
+            else if (server is IRunServer runServer)
             {
-                Trace.Error("Fail to raise JobCompletedEvent back to service.");
-                Trace.Error(ex);
+                try
+                {
+                    await runServer.CompleteJobAsync(message.Plan.PlanId, message.JobId, TaskResult.Failed, outputs: null, stepResults: null, CancellationToken.None);
+                }
+                catch (Exception ex)
+                {
+                    Trace.Error("Fail to raise job completion back to service.");
+                    Trace.Error(ex);
+                }
             }
+            else
+            {
+                throw new NotSupportedException($"Server type {server.GetType().FullName} is not supported.");
+            }
+        }
+
+        private async Task<IRunnerService> InitializeJobServerAsync(ServiceEndpoint systemConnection)
+        {
+            if (this._isRunServiceJob)
+            {
+                return await GetRunServerAsync(systemConnection);
+            }
+            else
+            {
+                var jobServer = HostContext.GetService<IJobServer>();
+                VssCredentials jobServerCredential = VssUtil.GetVssCredential(systemConnection);
+                VssConnection jobConnection = VssUtil.CreateConnection(systemConnection.Url, jobServerCredential);
+                await jobServer.ConnectAsync(jobConnection);
+                return jobServer;
+            }
+        }
+
+        private async Task<IRunServer> GetRunServerAsync(ServiceEndpoint systemConnection)
+        {
+            var runServer = HostContext.GetService<IRunServer>();
+            VssCredentials jobServerCredential = VssUtil.GetVssCredential(systemConnection);
+            await runServer.ConnectAsync(systemConnection.Url, jobServerCredential);
+            return runServer;
         }
 
         private class WorkerDispatcher : IDisposable

src/Runner.Listener/MessageListener.cs

@@ -182,7 +182,7 @@ namespace GitHub.Runner.Listener
                 try
                 {
                     _getMessagesTokenSource?.Cancel();
-                } 
+                }
                 catch (ObjectDisposedException)
                 {
                     Trace.Info("_getMessagesTokenSource is already disposed.");
@@ -245,6 +245,10 @@ namespace GitHub.Runner.Listener
                     _accessTokenRevoked = true;
                     throw;
                 }
+                catch (AccessDeniedException e) when (e.InnerException is InvalidTaskAgentVersionException)
+                {
+                    throw;
+                }
                 catch (Exception ex)
                 {
                     Trace.Error("Catch exception during get next message.");
@@ -289,7 +293,7 @@ namespace GitHub.Runner.Listener
                         await HostContext.Delay(_getNextMessageRetryInterval, token);
                     }
                 }
-                finally 
+                finally
                 {
                     _getMessagesTokenSource.Dispose();
                 }

src/Runner.Listener/Program.cs

@@ -6,6 +6,7 @@ using System.IO;
 using System.Reflection;
 using System.Runtime.InteropServices;
 using System.Threading.Tasks;
+using GitHub.DistributedTask.WebApi;
 
 namespace GitHub.Runner.Listener
 {
@@ -58,7 +59,7 @@ namespace GitHub.Runner.Listener
                         terminal.WriteLine("This runner version is built for Windows. Please install a correct build for your OS.");
                         return Constants.Runner.ReturnCode.TerminatedError;
                     }
-                    #if ARM64
+#if ARM64
                         // A little hacky, but windows gives no way to differentiate between windows 10 and 11.
                         // By default only 11 supports native x64 app emulation on arm, so we only want to support windows 11
                         // https://docs.microsoft.com/en-us/windows/arm/overview#build-windows-apps-that-run-on-arm
@@ -69,7 +70,7 @@ namespace GitHub.Runner.Listener
                             terminal.WriteLine("Win-arm64 runners require windows 11 or later. Please upgrade your operating system.");
                             return Constants.Runner.ReturnCode.TerminatedError;
                         }
-                    #endif
+#endif
                     break;
                 default:
                     terminal.WriteLine($"Running the runner on this platform is not supported. The current platform is {RuntimeInformation.OSDescription} and it was built for {Constants.Runner.Platform.ToString()}.");
@@ -137,6 +138,12 @@ namespace GitHub.Runner.Listener
                 }
 
             }
+            catch (AccessDeniedException e) when (e.InnerException is InvalidTaskAgentVersionException)
+            {
+                terminal.WriteError($"An error occured: {e.Message}");
+                trace.Error(e);
+                return Constants.Runner.ReturnCode.TerminatedError;
+            }
             catch (Exception e)
             {
                 terminal.WriteError($"An error occurred: {e.Message}");

src/Runner.Listener/Runner.cs

@@ -4,11 +4,13 @@ using System.IO;
 using System.Linq;
 using System.Reflection;
 using System.Runtime.CompilerServices;
+using System.Security.Cryptography;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Common;
+using GitHub.Runner.Common.Util;
 using GitHub.Runner.Listener.Check;
 using GitHub.Runner.Listener.Configuration;
 using GitHub.Runner.Sdk;
@@ -136,7 +138,7 @@ namespace GitHub.Runner.Listener
                 if (command.Remove)
                 {
                     // only remove local config files and exit
-                    if(command.RemoveLocalConfig)
+                    if (command.RemoveLocalConfig)
                     {
                         configManager.DeleteLocalRunnerConfig();
                         return Constants.Runner.ReturnCode.Success;
@@ -209,10 +211,16 @@ namespace GitHub.Runner.Listener
                         foreach (var config in jitConfig)
                         {
                             var configFile = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Root), config.Key);
-                            var configContent = Encoding.UTF8.GetString(Convert.FromBase64String(config.Value));
-                            File.WriteAllText(configFile, configContent, Encoding.UTF8);
+                            var configContent = Convert.FromBase64String(config.Value);
+#if OS_WINDOWS
+                            if (configFile == HostContext.GetConfigFile(WellKnownConfigFile.RSACredentials))
+                            {
+                                configContent = ProtectedData.Protect(configContent, null, DataProtectionScope.LocalMachine);
+                            }
+#endif
+                            File.WriteAllBytes(configFile, configContent);
                             File.SetAttributes(configFile, File.GetAttributes(configFile) | FileAttributes.Hidden);
-                            Trace.Info($"Save {configContent.Length} chars to '{configFile}'.");
+                            Trace.Info($"Saved {configContent.Length} bytes to '{configFile}'.");
                         }
                     }
                     catch (Exception ex)
@@ -331,13 +339,26 @@ namespace GitHub.Runner.Listener
             }
         }
 
+        private IMessageListener GetMesageListener(RunnerSettings settings)
+        {
+            if (settings.UseV2Flow)
+            {
+                Trace.Info($"Using BrokerMessageListener");
+                var brokerListener = new BrokerMessageListener();
+                brokerListener.Initialize(HostContext);
+                return brokerListener;
+            }
+
+            return HostContext.GetService<IMessageListener>();
+        }
+
         //create worker manager, create message listener and start listening to the queue
         private async Task<int> RunAsync(RunnerSettings settings, bool runOnce = false)
         {
             try
             {
                 Trace.Info(nameof(RunAsync));
-                _listener = HostContext.GetService<IMessageListener>();
+                _listener = GetMesageListener(settings);
                 if (!await _listener.CreateSessionAsync(HostContext.RunnerShutdownToken))
                 {
                     return Constants.Runner.ReturnCode.TerminatedError;
@@ -502,7 +523,7 @@ namespace GitHub.Runner.Listener
                                 }
                             }
                             // Broker flow
-                            else if (string.Equals(message.MessageType, JobRequestMessageTypes.RunnerJobRequest, StringComparison.OrdinalIgnoreCase))
+                            else if (MessageUtil.IsRunServiceJob(message.MessageType))
                             {
                                 if (autoUpdateInProgress || runOnceJobReceived)
                                 {

src/Runner.Sdk/RunnerWebProxy.cs

@@ -164,7 +164,6 @@ namespace GitHub.Runner.Sdk
                         {
                             continue;
                         }
-
                         _noProxyList.Add(noProxyInfo);
                     }
                 }
@@ -207,6 +206,11 @@ namespace GitHub.Runner.Sdk
         {
             foreach (var noProxy in _noProxyList)
             {
+                // bypass on wildcard no_proxy
+                if (string.Equals(noProxy.Host, "*", StringComparison.OrdinalIgnoreCase))
+                {
+                    return true;
+                }
                 var matchHost = false;
                 var matchPort = false;
 

src/Runner.Sdk/Util/IOUtil.cs

@@ -40,10 +40,19 @@ namespace GitHub.Runner.Sdk
             File.WriteAllText(path, StringUtil.ConvertToJson(obj), Encoding.UTF8);
         }
 
-        public static T LoadObject<T>(string path)
+        public static T LoadObject<T>(string path, bool required = false)
         {
             string json = File.ReadAllText(path, Encoding.UTF8);
-            return StringUtil.ConvertFromJson<T>(json);
+            if (required && string.IsNullOrEmpty(json))
+            {
+                throw new ArgumentNullException($"File {path} is empty");
+            }
+            T result = StringUtil.ConvertFromJson<T>(json);
+            if (required && result == null)
+            {
+                throw new ArgumentException("Converting json to object resulted in a null value");
+            }
+            return result;
         }
 
         public static string GetSha256Hash(string path)

src/Runner.Worker/ActionCommandManager.cs

@@ -1,4 +1,4 @@
-using GitHub.DistributedTask.Pipelines.ContextData;
+using GitHub.DistributedTask.Pipelines.ContextData;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Worker.Container;
 using System;
@@ -405,8 +405,9 @@ namespace GitHub.Runner.Worker
                 Trace.Info($"Add new secret mask with length of {command.Data.Length}");
 
                 // Also add each individual line. Typically individual lines are processed from STDOUT of child processes.
-                var split = command.Data.Split(new[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
-                foreach (var item in split)
+                var auxiliarySecrets = command.Data.Split(new[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
+                                                   .Where(candidate => candidate.Length >= HostContext.SecretMasker.DerivedSecretRecommendedMinimumLength);
+                foreach (var item in auxiliarySecrets)
                 {
                     HostContext.SecretMasker.AddValue(item);
                 }

src/Runner.Worker/JobRunner.cs

@@ -6,6 +6,7 @@ using System.Net.Http;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
+using GitHub.DistributedTask.Pipelines;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Common;
 using GitHub.Runner.Common.Util;
@@ -19,7 +20,7 @@ namespace GitHub.Runner.Worker
     [ServiceLocator(Default = typeof(JobRunner))]
     public interface IJobRunner : IRunnerService
     {
-        Task<TaskResult> RunAsync(Pipelines.AgentJobRequestMessage message, CancellationToken jobRequestCancellationToken);
+        Task<TaskResult> RunAsync(AgentJobRequestMessage message, CancellationToken jobRequestCancellationToken);
     }
 
     public sealed class JobRunner : RunnerService, IJobRunner
@@ -28,7 +29,7 @@ namespace GitHub.Runner.Worker
         private RunnerSettings _runnerSettings;
         private ITempDirectoryManager _tempDirectoryManager;
 
-        public async Task<TaskResult> RunAsync(Pipelines.AgentJobRequestMessage message, CancellationToken jobRequestCancellationToken)
+        public async Task<TaskResult> RunAsync(AgentJobRequestMessage message, CancellationToken jobRequestCancellationToken)
         {
             // Validate parameters.
             Trace.Entering();
@@ -42,14 +43,14 @@ namespace GitHub.Runner.Worker
             IRunnerService server = null;
 
             ServiceEndpoint systemConnection = message.Resources.Endpoints.Single(x => string.Equals(x.Name, WellKnownServiceEndpointNames.SystemVssConnection, StringComparison.OrdinalIgnoreCase));
-            if (string.Equals(message.MessageType, JobRequestMessageTypes.RunnerJobRequest, StringComparison.OrdinalIgnoreCase))
+            if (MessageUtil.IsRunServiceJob(message.MessageType))
             {
                 var runServer = HostContext.GetService<IRunServer>();
                 VssCredentials jobServerCredential = VssUtil.GetVssCredential(systemConnection);
                 await runServer.ConnectAsync(systemConnection.Url, jobServerCredential);
                 server = runServer;
             }
-            else 
+            else
             {
                 // Setup the job server and job server queue.
                 var jobServer = HostContext.GetService<IJobServer>();
@@ -65,7 +66,7 @@ namespace GitHub.Runner.Worker
                 _jobServerQueue.Start(message);
                 server = jobServer;
             }
-            
+
 
             HostContext.WritePerfCounter($"WorkerJobServerQueueStarted_{message.RequestId.ToString()}");
 

src/Runner.Worker/Worker.cs

@@ -1,12 +1,12 @@
-using GitHub.DistributedTask.WebApi;
+using GitHub.DistributedTask.WebApi;
 using Pipelines = GitHub.DistributedTask.Pipelines;
 using GitHub.Runner.Common.Util;
 using Newtonsoft.Json;
 using System;
+using System.Linq;
 using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
-using GitHub.Services.WebApi;
 using GitHub.Runner.Common;
 using GitHub.Runner.Sdk;
 using System.Text;
@@ -156,8 +156,9 @@ namespace GitHub.Runner.Worker
                     HostContext.SecretMasker.AddValue(value);
 
                     // Also add each individual line. Typically individual lines are processed from STDOUT of child processes.
-                    var split = value.Split(new[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
-                    foreach (var item in split)
+                    var auxiliarySecrets = value.Split(new[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
+                                                .Where(candidate => candidate.Length >= HostContext.SecretMasker.DerivedSecretRecommendedMinimumLength);
+                    foreach (var item in auxiliarySecrets)
                     {
                         HostContext.SecretMasker.AddValue(item);
                     }

src/Sdk/Common/Common/RawClientHttpRequestSettings.cs

@@ -184,9 +184,33 @@ namespace GitHub.Services.Common
             return settings;
         }
 
+        /// <summary>
+        /// Gets or sets the maximum size allowed for response content buffering.
+        /// </summary>
+        [DefaultValue(c_defaultContentBufferSize)]
+        public Int32 MaxContentBufferSize
+        {
+            get
+            {
+                return m_maxContentBufferSize;
+            }
+            set
+            {
+                ArgumentUtility.CheckForOutOfRange(value, nameof(value), 0, c_maxAllowedContentBufferSize);
+                m_maxContentBufferSize = value;
+            }
+        }
+
         private static Lazy<RawClientHttpRequestSettings> s_defaultSettings
             = new Lazy<RawClientHttpRequestSettings>(ConstructDefaultSettings);
 
+        private Int32 m_maxContentBufferSize;
+        // We will buffer a maximum of 1024MB in the message handler
+        private const Int32 c_maxAllowedContentBufferSize = 1024 * 1024 * 1024;
+
+        // We will buffer, by default, up to 512MB in the message handler
+        private const Int32 c_defaultContentBufferSize = 1024 * 1024 * 512;
+
         private const Int32 c_defaultMaxRetry = 3;
         private static readonly TimeSpan s_defaultTimeout = TimeSpan.FromSeconds(100); //default WebAPI timeout
         private ICollection<CultureInfo> m_acceptLanguages = new List<CultureInfo>();

src/Sdk/Common/Common/RawHttpMessageHandler.cs

@@ -9,7 +9,7 @@ using GitHub.Services.OAuth;
 
 namespace GitHub.Services.Common
 {
-    public class RawHttpMessageHandler: HttpMessageHandler
+    public class RawHttpMessageHandler : HttpMessageHandler
     {
         public RawHttpMessageHandler(
             FederatedCredential credentials)
@@ -120,6 +120,7 @@ namespace GitHub.Services.Common
             Boolean succeeded = false;
             HttpResponseMessageWrapper responseWrapper;
 
+            Boolean lastResponseDemandedProxyAuth = false;
             Int32 retries = m_maxAuthRetries;
             try
             {
@@ -138,7 +139,13 @@ namespace GitHub.Services.Common
 
                     // Let's start with sending a token
                     IssuedToken token = await m_tokenProvider.GetTokenAsync(null, tokenSource.Token).ConfigureAwait(false);
-                    ApplyToken(request, token);
+                    ApplyToken(request, token, applyICredentialsToWebProxy: lastResponseDemandedProxyAuth);
+
+                    // The WinHttpHandler will chunk any content that does not have a computed length which is
+                    // not what we want. By loading into a buffer up-front we bypass this behavior and there is
+                    // no difference in the normal HttpClientHandler behavior here since this is what they were
+                    // already doing.
+                    await BufferRequestContentAsync(request, tokenSource.Token).ConfigureAwait(false);
 
                     // ConfigureAwait(false) enables the continuation to be run outside any captured
                     // SyncronizationContext (such as ASP.NET's) which keeps things from deadlocking...
@@ -147,7 +154,8 @@ namespace GitHub.Services.Common
                     responseWrapper = new HttpResponseMessageWrapper(response);
 
                     var isUnAuthorized = responseWrapper.StatusCode == HttpStatusCode.Unauthorized;
-                    if (!isUnAuthorized)
+                    lastResponseDemandedProxyAuth = responseWrapper.StatusCode == HttpStatusCode.ProxyAuthenticationRequired;
+                    if (!isUnAuthorized && !lastResponseDemandedProxyAuth)
                     {
                         // Validate the token after it has been successfully authenticated with the server.
                         m_tokenProvider?.ValidateToken(token, responseWrapper);
@@ -211,15 +219,42 @@ namespace GitHub.Services.Common
             }
         }
 
+        private static async Task BufferRequestContentAsync(
+             HttpRequestMessage request,
+             CancellationToken cancellationToken)
+        {
+            if (request.Content != null &&
+                request.Headers.TransferEncodingChunked != true)
+            {
+                Int64? contentLength = request.Content.Headers.ContentLength;
+                if (contentLength == null)
+                {
+                    await request.Content.LoadIntoBufferAsync().EnforceCancellation(cancellationToken).ConfigureAwait(false);
+                }
+
+                // Explicitly turn off chunked encoding since we have computed the request content size
+                request.Headers.TransferEncodingChunked = false;
+            }
+        }
+
         private void ApplyToken(
             HttpRequestMessage request,
-            IssuedToken token)
+            IssuedToken token,
+            bool applyICredentialsToWebProxy = false)
         {
             switch (token)
             {
                 case null:
                     return;
                 case ICredentials credentialsToken:
+                    if (applyICredentialsToWebProxy)
+                    {
+                        HttpClientHandler httpClientHandler = m_transportHandler as HttpClientHandler;
+                        if (httpClientHandler != null && httpClientHandler.Proxy != null)
+                        {
+                            httpClientHandler.Proxy.Credentials = credentialsToken;
+                        }
+                    }
                     m_credentialWrapper.InnerCredentials = credentialsToken;
                     break;
                 default:

src/Sdk/Common/Common/VssHttpMessageHandler.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Net;

src/Sdk/Common/Common/VssHttpRequestSettings.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Globalization;

src/Sdk/DTExpressions2/Expressions2/Sdk/ExpressionNode.cs

@@ -1,6 +1,6 @@
-using System;
-using System.Collections.Generic;
+using System;
 using System.ComponentModel;
+using System.Linq;
 using GitHub.DistributedTask.Logging;
 
 namespace GitHub.DistributedTask.Expressions2.Sdk
@@ -55,7 +55,7 @@ namespace GitHub.DistributedTask.Expressions2.Sdk
             try
             {
                 // Evaluate
-                secretMasker = secretMasker?.Clone() ?? new SecretMasker();
+                secretMasker = secretMasker?.Clone() ?? new SecretMasker(Enumerable.Empty<ValueEncoder>());
                 trace = new EvaluationTraceWriter(trace, secretMasker);
                 var context = new EvaluationContext(trace, secretMasker, state, options, this);
                 trace.Info($"Evaluating: {ConvertToExpression()}");

src/Sdk/DTLogging/Logging/ISecretMasker.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.ComponentModel;
 
 namespace GitHub.DistributedTask.Logging
@@ -6,9 +6,9 @@ namespace GitHub.DistributedTask.Logging
     [EditorBrowsable(EditorBrowsableState.Never)]
     public interface ISecretMasker
     {
+        int DerivedSecretRecommendedMinimumLength { get; }
         void AddRegex(String pattern);
         void AddValue(String value);
-        void AddValueEncoder(ValueEncoder encoder);
         ISecretMasker Clone();
         String MaskSecrets(String input);
     }

src/Sdk/DTLogging/Logging/SecretMasker.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Linq;
@@ -10,11 +10,11 @@ namespace GitHub.DistributedTask.Logging
     [EditorBrowsable(EditorBrowsableState.Never)]
     public sealed class SecretMasker : ISecretMasker, IDisposable
     {
-        public SecretMasker()
+        public SecretMasker(IEnumerable<ValueEncoder> encoders)
         {
             m_originalValueSecrets = new HashSet<ValueSecret>();
             m_regexSecrets = new HashSet<RegexSecret>();
-            m_valueEncoders = new HashSet<ValueEncoder>();
+            m_valueEncoders = new HashSet<ValueEncoder>(encoders ?? Enumerable.Empty<ValueEncoder>());
             m_valueSecrets = new HashSet<ValueSecret>();
         }
 
@@ -40,6 +40,19 @@ namespace GitHub.DistributedTask.Logging
             }
         }
 
+        /// <summary>
+        /// Provide callers with a recommendation on what to consider a secret.
+        /// This is helpful in cases where JSON (for example) is broken into multiple lines
+        /// and we don't want to start treating standalone JSON control characters as secrets.
+        /// </summary>
+        public int DerivedSecretRecommendedMinimumLength
+        {
+            get
+            {
+                return 3;
+            }
+        }
+
         /// <summary>
         /// This implementation assumes no more than one thread is adding regexes, values, or encoders at any given time.
         /// </summary>
@@ -104,15 +117,11 @@ namespace GitHub.DistributedTask.Logging
                 }
             }
 
-            // Compute the encoded values.
-            foreach (ValueEncoder valueEncoder in valueEncoders)
-            {
-                String encodedValue = valueEncoder(value);
-                if (!String.IsNullOrEmpty(encodedValue))
-                {
-                    valueSecrets.Add(new ValueSecret(encodedValue));
-                }
-            }
+            var secretVariations = valueEncoders.SelectMany(encoder => encoder(value))
+                                                .Where(variation => !string.IsNullOrEmpty(variation))
+                                                .Distinct()
+                                                .Select(variation => new ValueSecret(variation));
+            valueSecrets.AddRange(secretVariations);
 
             // Write section.
             try
@@ -135,69 +144,6 @@ namespace GitHub.DistributedTask.Logging
             }
         }
 
-        /// <summary>
-        /// This implementation assumes no more than one thread is adding regexes, values, or encoders at any given time.
-        /// </summary>
-        public void AddValueEncoder(ValueEncoder encoder)
-        {
-            ValueSecret[] originalSecrets;
-
-            // Read section.
-            try
-            {
-                m_lock.EnterReadLock();
-
-                // Test whether already added.
-                if (m_valueEncoders.Contains(encoder))
-                {
-                    return;
-                }
-
-                // Read the original value secrets.
-                originalSecrets = m_originalValueSecrets.ToArray();
-            }
-            finally
-            {
-                if (m_lock.IsReadLockHeld)
-                {
-                    m_lock.ExitReadLock();
-                }
-            }
-
-            // Compute the encoded values.
-            var encodedSecrets = new List<ValueSecret>();
-            foreach (ValueSecret originalSecret in originalSecrets)
-            {
-                String encodedValue = encoder(originalSecret.m_value);
-                if (!String.IsNullOrEmpty(encodedValue))
-                {
-                    encodedSecrets.Add(new ValueSecret(encodedValue));
-                }
-            }
-
-            // Write section.
-            try
-            {
-                m_lock.EnterWriteLock();
-
-                // Add the encoder.
-                m_valueEncoders.Add(encoder);
-
-                // Add the values.
-                foreach (ValueSecret encodedSecret in encodedSecrets)
-                {
-                    m_valueSecrets.Add(encodedSecret);
-                }
-            }
-            finally
-            {
-                if (m_lock.IsWriteLockHeld)
-                {
-                    m_lock.ExitWriteLock();
-                }
-            }
-        }
-
         public ISecretMasker Clone() => new SecretMasker(this);
 
         public void Dispose()

src/Sdk/DTLogging/Logging/ValueEncoders.cs

@@ -1,73 +1,97 @@
-using System;
+using System;
+using System.Collections.Generic;
 using System.ComponentModel;
+using System.Linq;
 using System.Security;
 using System.Text;
-using System.Text.RegularExpressions;
 using Newtonsoft.Json;
 
 namespace GitHub.DistributedTask.Logging
 {
     [EditorBrowsable(EditorBrowsableState.Never)]
-    public delegate String ValueEncoder(String value);
+    public delegate IEnumerable<string> ValueEncoder(string value);
 
     [EditorBrowsable(EditorBrowsableState.Never)]
     public static class ValueEncoders
     {
-        public static String Base64StringEscape(String value)
-        {
-            return Convert.ToBase64String(Encoding.UTF8.GetBytes(value));
-        }
 
-        // Base64 is 6 bits -> char
-        // A byte is 8 bits
-        // When end user doing somthing like base64(user:password)
-        // The length of the leading content will cause different base64 encoding result on the password
-        // So we add base64(value shifted 1 and two bytes) as secret as well. 
-        //    B1         B2      B3                    B4      B5     B6     B7
-        // 000000|00 0000|0000 00|000000|            000000|00 0000|0000 00|000000| 
-        //  Char1  Char2    Char3   Char4  
-        // See the above, the first byte has a character beginning at index 0, the second byte has a character beginning at index 4, the third byte has a character beginning at index 2 and then the pattern repeats
-        // We register byte offsets for all these possible values
-        public static String Base64StringEscapeShift1(String value)
+        public static IEnumerable<string> EnumerateBase64Variations(string value)
         {
-            return Base64StringEscapeShift(value, 1);
-        }
+            if (!string.IsNullOrEmpty(value))
+            {
+                // A byte is 8 bits.  A Base64 "digit" can hold a maximum of 6 bits (2^64 - 1, or values 0 to 63).
+                // As a result, many Unicode characters (including single-byte letters) cannot be represented using a single Base64 digit.
+                // Furthermore, on average a Base64 string will be about 33% longer than the original text.
+                // This is because it generally requires 4 Base64 digits to represent 3 Unicode bytes.  (4 / 3 ~ 1.33)
+                //
+                // Because of this 4:3 ratio (or, more precisely, 8 bits : 6 bits ratio), there's a cyclical pattern
+                // to when a byte boundary aligns with a Base64 digit boundary.
+                // The pattern repeats every 24 bits (the lowest common multiple of 8 and 6).
+                //
+                //                    |-----------24 bits-------------|-----------24 bits------------|
+                // Base64 Digits:     |digit 0|digit 1|digit 2|digit 3|digit 4|digit 5|digit 6|digit7|
+                // Allocated Bits:    aaaaaa  aaBBBB  BBBBcc  cccccc  DDDDDD  DDeeee  eeeeFF  FFFFFF
+                // Unicode chars:     |0th char |1st char |2nd char   |3rd char |4th char |5th char  |
 
-        public static String Base64StringEscapeShift2(String value)
-        {
-            return Base64StringEscapeShift(value, 2);
+                // Depending on alignment, the Base64-encoded secret can take any of 3 basic forms.
+                // For example, the Base64 digits representing "abc" could appear as any of the following:
+                //    "YWJj"     when aligned
+                //    ".!FiYw==" when preceded by 3x + 1 bytes
+                //    "..!hYmM=" when preceded by 3x + 2 bytes
+                // (where . represents an unrelated Base64 digit, ! represents a Base64 digit that should be masked, and x represents any non-negative integer)
+
+                var rawBytes = Encoding.UTF8.GetBytes(value);
+
+                for (var offset = 0; offset <= 2; offset++)
+                {
+                    var prunedBytes = rawBytes.Skip(offset).ToArray();
+                    if (prunedBytes.Length > 0)
+                    {
+                        // Don't include Base64 padding characters (=) in Base64 representations of the secret.
+                        // They don't represent anything interesting, so they don't need to be masked.
+                        // (Some clients omit the padding, so we want to be sure we recognize the secret regardless of whether the padding is present or not.)
+                        var buffer = new StringBuilder(Convert.ToBase64String(prunedBytes).TrimEnd(BASE64_PADDING_SUFFIX));
+                        yield return buffer.ToString();
+
+                        // Also, yield the RFC4648-equivalent RegEx.
+                        buffer.Replace('+', '-');
+                        buffer.Replace('/', '_');
+                        yield return buffer.ToString();
+                    }
+                }
+            }
         }
 
         // Used when we pass environment variables to docker to escape " with \"
-        public static String CommandLineArgumentEscape(String value)
+        public static IEnumerable<string> CommandLineArgumentEscape(string value)
         {
-            return value.Replace("\"", "\\\"");
+            yield return value.Replace("\"", "\\\"");
         }
 
-        public static String ExpressionStringEscape(String value)
+        public static IEnumerable<string> ExpressionStringEscape(string value)
         {
-            return Expressions2.Sdk.ExpressionUtility.StringEscape(value);
+            yield return Expressions2.Sdk.ExpressionUtility.StringEscape(value);
         }
 
-        public static String JsonStringEscape(String value)
+        public static IEnumerable<string> JsonStringEscape(string value)
         {
             // Convert to a JSON string and then remove the leading/trailing double-quote.
             String jsonString = JsonConvert.ToString(value);
             String jsonEscapedValue = jsonString.Substring(startIndex: 1, length: jsonString.Length - 2);
-            return jsonEscapedValue;
+            yield return jsonEscapedValue;
         }
 
-        public static String UriDataEscape(String value)
+        public static IEnumerable<string> UriDataEscape(string value)
         {
-            return UriDataEscape(value, 65519);
+            yield return UriDataEscape(value, 65519);
         }
 
-        public static String XmlDataEscape(String value)
+        public static IEnumerable<string> XmlDataEscape(string value)
         {
-            return SecurityElement.Escape(value);
+            yield return SecurityElement.Escape(value);
         }
 
-        public static String TrimDoubleQuotes(String value)
+        public static IEnumerable<string> TrimDoubleQuotes(string value)
         {
             var trimmed = string.Empty;
             if (!string.IsNullOrEmpty(value) &&
@@ -78,17 +102,17 @@ namespace GitHub.DistributedTask.Logging
                 trimmed = value.Substring(1, value.Length - 2);
             }
 
-            return trimmed;
+            yield return trimmed;
         }
 
-        public static String PowerShellPreAmpersandEscape(String value)
+        public static IEnumerable<string> PowerShellPreAmpersandEscape(string value)
         {
             // if the secret is passed to PS as a command and it causes an error, sections of it can be surrounded by color codes
-            // or printed individually. 
-            
+            // or printed individually.
+
             // The secret secretpart1&secretpart2&secretpart3 would be split into 2 sections:
             // 'secretpart1&secretpart2&' and 'secretpart3'. This method masks for the first section.
-            
+
             // The secret secretpart1&+secretpart2&secretpart3 would be split into 2 sections:
             // 'secretpart1&+' and (no 's') 'ecretpart2&secretpart3'. This method masks for the first section.
 
@@ -112,10 +136,10 @@ namespace GitHub.DistributedTask.Logging
                 }
             }
 
-            return trimmed;
+            yield return trimmed;
         }
 
-        public static String PowerShellPostAmpersandEscape(String value)
+        public static IEnumerable<string> PowerShellPostAmpersandEscape(string value)
         {
             var trimmed = string.Empty;
             if (!string.IsNullOrEmpty(value) && value.Contains("&"))
@@ -137,27 +161,10 @@ namespace GitHub.DistributedTask.Logging
                 }
             }
 
-            return trimmed;
+            yield return trimmed;
         }
 
-        private static string Base64StringEscapeShift(String value, int shift)
-        {
-            var bytes = Encoding.UTF8.GetBytes(value);
-            if (bytes.Length > shift)
-            {
-                var shiftArray = new byte[bytes.Length - shift];
-                Array.Copy(bytes, shift, shiftArray, 0, bytes.Length - shift);
-                return Convert.ToBase64String(shiftArray);
-            }
-            else
-            {
-                return Convert.ToBase64String(bytes);
-            }
-        }
-
-        private static String UriDataEscape(
-            String value,
-            Int32 maxSegmentSize)
+        private static string UriDataEscape(string value, Int32 maxSegmentSize)
         {
             if (value.Length <= maxSegmentSize)
             {
@@ -183,5 +190,7 @@ namespace GitHub.DistributedTask.Logging
 
             return result.ToString();
         }
+
+        private const char BASE64_PADDING_SUFFIX = '=';
     }
 }

src/Sdk/DTPipelines/workflow-v1.0.json

@@ -222,6 +222,9 @@
     },
 
     "job-outputs": {
+      "context": [
+        "matrix"
+      ],
       "mapping": {
         "loose-key-type": "non-empty-string",
         "loose-value-type": "string-runner-context"

src/Sdk/DTWebApi/WebApi/ListRunnersResponse.cs

@@ -0,0 +1,48 @@
+using GitHub.Services.WebApi;
+using System;
+using System.Collections.Generic;
+using System.Runtime.Serialization;
+using Newtonsoft.Json;
+using System.Linq;
+
+namespace GitHub.DistributedTask.WebApi
+{
+
+    public class ListRunnersResponse
+    {
+        public ListRunnersResponse()
+        {
+        }
+
+        public ListRunnersResponse(ListRunnersResponse responseToBeCloned)
+        {
+            this.TotalCount = responseToBeCloned.TotalCount;
+            this.Runners = responseToBeCloned.Runners;
+        }
+
+        [JsonProperty("total_count")]
+        public int TotalCount
+        {
+            get;
+            set;
+        }
+
+        [JsonProperty("runners")]
+        public List<Runner> Runners
+        {
+            get;
+            set;
+        }
+
+        public ListRunnersResponse Clone()
+        {
+            return new ListRunnersResponse(this);
+        }
+
+        public List<TaskAgent> ToTaskAgents()
+        {
+            return Runners.Select(runner => new TaskAgent() { Name = runner.Name }).ToList();
+        }
+    }
+
+}

src/Sdk/DTWebApi/WebApi/Runner.cs

@@ -0,0 +1,63 @@
+using System;
+using Newtonsoft.Json;
+
+namespace GitHub.DistributedTask.WebApi
+{
+    public class Runner
+    {
+
+        public class Authorization
+        {
+            /// <summary>
+            /// The url to refresh tokens
+            /// </summary> 
+            [JsonProperty("authorization_url")]
+            public Uri AuthorizationUrl
+            {
+                get;
+                internal set;
+            }
+
+            /// <summary>
+            /// The url to connect to to poll for messages
+            /// </summary> 
+            [JsonProperty("server_url")]
+            public string ServerUrl
+            {
+                get;
+                internal set;
+            }
+
+            /// <summary>
+            /// The client id to use when connecting to the authorization_url
+            /// </summary>
+            [JsonProperty("client_id")]
+            public string ClientId
+            {
+                get;
+                internal set;
+            }
+        }
+
+        [JsonProperty("name")]
+        public string Name
+        {
+            get;
+            internal set;
+        }
+
+        [JsonProperty("id")]
+        public Int32 Id
+        {
+            get;
+            internal set;
+        }
+
+        [JsonProperty("authorization")]
+        public Authorization RunnerAuthorization
+        {
+            get;
+            internal set;
+        }
+    }
+}

src/Sdk/DTWebApi/WebApi/RunnerGroup.cs

@@ -0,0 +1,98 @@
+using GitHub.Services.WebApi;
+using System;
+using System.Runtime.Serialization;
+using System.ComponentModel;
+using System.Collections.Generic;
+using Newtonsoft.Json;
+using System.Linq;
+
+namespace GitHub.DistributedTask.WebApi
+{
+    /// <summary>
+    /// An organization-level grouping of runners.
+    /// </summary>
+    [DataContract]
+    public class RunnerGroup
+    {
+        internal RunnerGroup()
+        {
+        }
+
+        public RunnerGroup(String name)
+        {
+            this.Name = name;
+        }
+
+        private RunnerGroup(RunnerGroup poolToBeCloned)
+        {
+            this.Id = poolToBeCloned.Id;
+            this.IsHosted = poolToBeCloned.IsHosted;
+            this.Name = poolToBeCloned.Name;
+            this.IsDefault = poolToBeCloned.IsDefault;
+        }
+
+        [DataMember(EmitDefaultValue = false)]
+        [JsonProperty("id")]
+        public Int32 Id
+        {
+            get;
+            set;
+        }
+
+        [DataMember(EmitDefaultValue = false)]
+        [JsonProperty("name")]
+        public String Name
+        {
+            get;
+            set;
+        }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether or not this pool is internal and can't be modified by users
+        /// </summary>
+        [DataMember]
+        [JsonProperty("default")]
+        public bool IsDefault
+        {
+            get;
+            set;
+        }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether or not this pool is managed by the service.
+        /// </summary>
+        [DataMember]
+        [JsonProperty("is_hosted")]
+        public Boolean IsHosted
+        {
+            get;
+            set;
+        }
+    }
+
+    public class RunnerGroupList
+    {
+        public RunnerGroupList()
+        {
+            this.RunnerGroups = new List<RunnerGroup>();
+        }
+
+        public List<TaskAgentPool> ToAgentPoolList()
+        {
+            var agentPools = this.RunnerGroups.Select(x => new TaskAgentPool(x.Name)
+            {
+                Id = x.Id,
+                IsHosted = x.IsHosted,
+                IsInternal = x.IsDefault
+            }).ToList();
+
+            return agentPools;
+        }
+
+        [JsonProperty("runner_groups")]
+        public List<RunnerGroup> RunnerGroups { get; set; }
+
+        [JsonProperty("total_count")]
+        public int Count { get; set; }
+    }
+}

src/Sdk/RSWebApi/Contracts/RenewJobRequest.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Runtime.Serialization;
+
+namespace GitHub.Actions.RunService.WebApi
+{
+    [DataContract]
+    public class RenewJobRequest
+    {
+        [DataMember(Name = "planId", EmitDefaultValue = false)]
+        public Guid PlanID { get; set; }
+
+        [DataMember(Name = "jobId", EmitDefaultValue = false)]
+        public Guid JobID { get; set; }
+    }
+}

src/Sdk/RSWebApi/Contracts/RenewJobResponse.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Runtime.Serialization;
+
+namespace Sdk.RSWebApi.Contracts
+{
+    [DataContract]
+    public class RenewJobResponse
+    {
+        [DataMember]
+        public DateTime LockedUntil
+        {
+            get;
+            internal set;
+        }
+    }
+}

src/Sdk/RSWebApi/RunServiceHttpClient.cs

@@ -8,6 +8,7 @@ using GitHub.DistributedTask.WebApi;
 using GitHub.Services.Common;
 using GitHub.Services.OAuth;
 using GitHub.Services.WebApi;
+using Sdk.RSWebApi.Contracts;
 using Sdk.WebApi.WebApi;
 
 namespace GitHub.Actions.RunService.WebApi
@@ -98,6 +99,29 @@ namespace GitHub.Actions.RunService.WebApi
 
             var requestContent = new ObjectContent<CompleteJobRequest>(payload, new VssJsonMediaTypeFormatter(true));
             return SendAsync(
+                    httpMethod,
+                    requestUri,
+                    content: requestContent,
+                    cancellationToken: cancellationToken);
+        }
+
+        public Task<RenewJobResponse> RenewJobAsync(
+            Uri requestUri,
+            Guid planId,
+            Guid jobId,
+            CancellationToken cancellationToken = default)
+        {
+            HttpMethod httpMethod = new HttpMethod("POST");
+            var payload = new RenewJobRequest()
+            {
+                PlanID = planId,
+                JobID = jobId
+            };
+
+            requestUri = new Uri(requestUri, "renewjob");
+
+            var requestContent = new ObjectContent<RenewJobRequest>(payload, new VssJsonMediaTypeFormatter(true));
+            return SendAsync<RenewJobResponse>(
                 httpMethod,
                 requestUri,
                 content: requestContent,

src/Sdk/WebApi/WebApi/BrokerHttpClient.cs

@@ -0,0 +1,84 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using GitHub.DistributedTask.Pipelines;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Services.Common;
+using GitHub.Services.OAuth;
+using GitHub.Services.WebApi;
+using Sdk.RSWebApi.Contracts;
+using Sdk.WebApi.WebApi;
+
+namespace GitHub.Actions.RunService.WebApi
+{
+    public class BrokerHttpClient : RawHttpClientBase
+    {
+        public BrokerHttpClient(
+            Uri baseUrl,
+            VssOAuthCredential credentials)
+            : base(baseUrl, credentials)
+        {
+        }
+
+        public BrokerHttpClient(
+            Uri baseUrl,
+            VssOAuthCredential credentials,
+            RawClientHttpRequestSettings settings)
+            : base(baseUrl, credentials, settings)
+        {
+        }
+
+        public BrokerHttpClient(
+            Uri baseUrl,
+            VssOAuthCredential credentials,
+            params DelegatingHandler[] handlers)
+            : base(baseUrl, credentials, handlers)
+        {
+        }
+
+        public BrokerHttpClient(
+            Uri baseUrl,
+            VssOAuthCredential credentials,
+            RawClientHttpRequestSettings settings,
+            params DelegatingHandler[] handlers)
+            : base(baseUrl, credentials, settings, handlers)
+        {
+        }
+
+        public BrokerHttpClient(
+            Uri baseUrl,
+            HttpMessageHandler pipeline,
+            Boolean disposeHandler)
+            : base(baseUrl, pipeline, disposeHandler)
+        {
+        }
+
+        public Task<TaskAgentMessage> GetRunnerMessageAsync(
+            string runnerVersion,
+            TaskAgentStatus? status,
+            CancellationToken cancellationToken = default
+        )
+        {
+            var requestUri = new Uri(Client.BaseAddress, "message");
+
+            List<KeyValuePair<string, string>> queryParams = new List<KeyValuePair<string, string>>();
+
+            if (status != null)
+            {
+                queryParams.Add("status", status.Value.ToString());
+            }
+            if (runnerVersion != null)
+            {
+                queryParams.Add("runnerVersion", runnerVersion);
+            }
+
+            return SendAsync<TaskAgentMessage>(
+                new HttpMethod("GET"),
+                requestUri: requestUri,
+                queryParameters: queryParams,
+                cancellationToken: cancellationToken);
+        }
+    }
+}

src/Sdk/WebApi/WebApi/Contracts.cs

@@ -1,3 +1,4 @@
+using System.Collections.Generic;
 using System.Runtime.Serialization;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Serialization;
@@ -126,6 +127,46 @@ namespace GitHub.Services.Results.Contracts
         public bool Ok;
     }
 
+    [DataContract]
+    [JsonObject(NamingStrategyType = typeof(SnakeCaseNamingStrategy))]
+    public class StepsUpdateRequest
+    {
+        [DataMember]
+        public IEnumerable<Step> Steps;
+        [DataMember]
+        public long ChangeOrder;
+        [DataMember]
+        public string WorkflowJobRunBackendId;
+        [DataMember]
+        public string WorkflowRunBackendId;
+    }
+
+    [DataContract]
+    [JsonObject(NamingStrategyType = typeof(SnakeCaseNamingStrategy))]
+    public class Step
+    {
+        [DataMember]
+        public string ExternalId;
+        [DataMember]
+        public int Number;
+        [DataMember]
+        public string Name;
+        [DataMember]
+        public Status Status;
+        [DataMember]
+        public string StartedAt;
+        [DataMember]
+        public string CompletedAt;
+    }
+
+    public enum Status
+    {
+        StatusUnknown = 0,
+        StatusInProgress = 3,
+        StatusPending = 5,
+        StatusCompleted = 6
+    }
+
     public static class BlobStorageTypes
     {
         public static readonly string AzureBlobStorage = "BLOB_STORAGE_TYPE_AZURE";

src/Sdk/WebApi/WebApi/ResultsHttpClient.cs

@@ -1,11 +1,16 @@
 using System;
+using System.Collections.Generic;
+using System.Diagnostics;
 using System.IO;
+using System.Linq;
 using System.Net.Http;
 using System.Net.Http.Headers;
 using System.Threading;
 using System.Threading.Tasks;
-using GitHub.Services.Results.Contracts;
 using System.Net.Http.Formatting;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Services.Common;
+using GitHub.Services.Results.Contracts;
 using Sdk.WebApi.WebApi;
 
 namespace GitHub.Services.Results.Client
@@ -22,6 +27,7 @@ namespace GitHub.Services.Results.Client
             m_token = token;
             m_resultsServiceUrl = baseUrl;
             m_formatter = new JsonMediaTypeFormatter();
+            m_changeIdCounter = 1;
         }
 
         // Get Sas URL calls
@@ -86,7 +92,7 @@ namespace GitHub.Services.Results.Client
 
         // Create metadata calls
 
-        private async Task CreateMetadata<R>(Uri uri, CancellationToken cancellationToken, R request, string timestamp)
+        private async Task SendRequest<R>(Uri uri, CancellationToken cancellationToken, R request, string timestamp)
         {
             using (HttpRequestMessage requestMessage = new HttpRequestMessage(HttpMethod.Post, uri))
             {
@@ -121,7 +127,7 @@ namespace GitHub.Services.Results.Client
             };
 
             var createStepSummaryMetadataEndpoint = new Uri(m_resultsServiceUrl, Constants.CreateStepSummaryMetadata);
-            await CreateMetadata<StepSummaryMetadataCreate>(createStepSummaryMetadataEndpoint, cancellationToken, request, timestamp);
+            await SendRequest<StepSummaryMetadataCreate>(createStepSummaryMetadataEndpoint, cancellationToken, request, timestamp);
         }
 
         private async Task StepLogUploadCompleteAsync(string planId, string jobId, Guid stepId, long lineCount, CancellationToken cancellationToken)
@@ -137,7 +143,7 @@ namespace GitHub.Services.Results.Client
             };
 
             var createStepLogsMetadataEndpoint = new Uri(m_resultsServiceUrl, Constants.CreateStepLogsMetadata);
-            await CreateMetadata<StepLogsMetadataCreate>(createStepLogsMetadataEndpoint, cancellationToken, request, timestamp);
+            await SendRequest<StepLogsMetadataCreate>(createStepLogsMetadataEndpoint, cancellationToken, request, timestamp);
         }
 
         private async Task JobLogUploadCompleteAsync(string planId, string jobId, long lineCount, CancellationToken cancellationToken)
@@ -152,7 +158,7 @@ namespace GitHub.Services.Results.Client
             };
 
             var createJobLogsMetadataEndpoint = new Uri(m_resultsServiceUrl, Constants.CreateJobLogsMetadata);
-            await CreateMetadata<JobLogsMetadataCreate>(createJobLogsMetadataEndpoint, cancellationToken, request, timestamp);
+            await SendRequest<JobLogsMetadataCreate>(createJobLogsMetadataEndpoint, cancellationToken, request, timestamp);
         }
 
         private async Task<HttpResponseMessage> UploadBlockFileAsync(string url, string blobStorageType, FileStream file, CancellationToken cancellationToken)
@@ -252,7 +258,7 @@ namespace GitHub.Services.Results.Client
             await StepSummaryUploadCompleteAsync(planId, jobId, stepId, fileSize, cancellationToken);
         }
 
-        // Handle file upload for step log 
+        // Handle file upload for step log
         public async Task UploadResultsStepLogAsync(string planId, string jobId, Guid stepId, string file, bool finalize, bool firstBlock, long lineCount, CancellationToken cancellationToken)
         {
             // Get the upload url
@@ -262,7 +268,7 @@ namespace GitHub.Services.Results.Client
                 throw new Exception("Failed to get step log upload url");
             }
 
-            // Create the Append blob 
+            // Create the Append blob
             if (firstBlock)
             {
                 await CreateAppendFileAsync(uploadUrlResponse.LogsUrl, uploadUrlResponse.BlobStorageType, cancellationToken);
@@ -283,7 +289,7 @@ namespace GitHub.Services.Results.Client
             }
         }
 
-        // Handle file upload for job log 
+        // Handle file upload for job log
         public async Task UploadResultsJobLogAsync(string planId, string jobId, string file, bool finalize, bool firstBlock, long lineCount, CancellationToken cancellationToken)
         {
             // Get the upload url
@@ -293,7 +299,7 @@ namespace GitHub.Services.Results.Client
                 throw new Exception("Failed to get job log upload url");
             }
 
-            // Create the Append blob 
+            // Create the Append blob
             if (firstBlock)
             {
                 await CreateAppendFileAsync(uploadUrlResponse.LogsUrl, uploadUrlResponse.BlobStorageType, cancellationToken);
@@ -314,9 +320,57 @@ namespace GitHub.Services.Results.Client
             }
         }
 
+        private Step ConvertTimelineRecordToStep(TimelineRecord r)
+        {
+            return new Step()
+            {
+                ExternalId = r.Id.ToString(),
+                Number = r.Order.GetValueOrDefault(),
+                Name = r.Name,
+                Status = ConvertStateToStatus(r.State.GetValueOrDefault()),
+                StartedAt = r.StartTime?.ToString(Constants.TimestampFormat),
+                CompletedAt = r.FinishTime?.ToString(Constants.TimestampFormat)
+            };
+        }
+
+        private Status ConvertStateToStatus(TimelineRecordState s)
+        {
+            switch (s)
+            {
+                case TimelineRecordState.Completed:
+                    return Status.StatusCompleted;
+                case TimelineRecordState.Pending:
+                    return Status.StatusPending;
+                case TimelineRecordState.InProgress:
+                    return Status.StatusInProgress;
+                default:
+                    return Status.StatusUnknown;
+            }
+        }
+
+        public async Task UpdateWorkflowStepsAsync(Guid planId, IEnumerable<TimelineRecord> records, CancellationToken cancellationToken)
+        {
+            var timestamp = DateTime.UtcNow.ToString(Constants.TimestampFormat);
+            var stepRecords = records.Where(r => String.Equals(r.RecordType, "Task", StringComparison.Ordinal));
+            var stepUpdateRequests = stepRecords.GroupBy(r => r.ParentId).Select(sg => new StepsUpdateRequest()
+            {
+                WorkflowRunBackendId = planId.ToString(),
+                WorkflowJobRunBackendId = sg.Key.ToString(),
+                ChangeOrder = m_changeIdCounter++,
+                Steps = sg.Select(ConvertTimelineRecordToStep)
+            });
+
+            var stepUpdateEndpoint = new Uri(m_resultsServiceUrl, Constants.WorkflowStepsUpdate);
+            foreach (var request in stepUpdateRequests)
+            {
+                await SendRequest<StepsUpdateRequest>(stepUpdateEndpoint, cancellationToken, request, timestamp);
+            }
+        }
+
         private MediaTypeFormatter m_formatter;
         private Uri m_resultsServiceUrl;
         private string m_token;
+        private int m_changeIdCounter;
     }
 
     // Constants specific to results
@@ -331,6 +385,8 @@ namespace GitHub.Services.Results.Client
         public static readonly string CreateStepLogsMetadata = ResultsReceiverTwirpEndpoint + "CreateStepLogsMetadata";
         public static readonly string GetJobLogsSignedBlobURL = ResultsReceiverTwirpEndpoint + "GetJobLogsSignedBlobURL";
         public static readonly string CreateJobLogsMetadata = ResultsReceiverTwirpEndpoint + "CreateJobLogsMetadata";
+        public static readonly string ResultsProtoApiV1Endpoint = "twirp/github.actions.results.api.v1.WorkflowStepUpdateService/";
+        public static readonly string WorkflowStepsUpdate = ResultsProtoApiV1Endpoint + "WorkflowStepsUpdate";
 
         public static readonly string AzureBlobSealedHeader = "x-ms-blob-sealed";
         public static readonly string AzureBlobTypeHeader = "x-ms-blob-type";

src/Test/L0/HostContextL0.cs

@@ -1,4 +1,3 @@
-using GitHub.Runner.Common.Util;
 using System;
 using System.IO;
 using System.Reflection;
@@ -13,6 +12,7 @@ namespace GitHub.Runner.Common.Tests
     {
         private HostContext _hc;
         private CancellationTokenSource _tokenSource;
+        private const string EXPECTED_SECRET_MASK = "***";
 
         [Fact]
         [Trait("Level", "L0")]
@@ -95,11 +95,11 @@ namespace GitHub.Runner.Common.Tests
                 Assert.Equal("123***123", _hc.SecretMasker.MaskSecrets("123Pass%20word%20123%21123"));
                 Assert.Equal("123***123", _hc.SecretMasker.MaskSecrets("123Pass<word>123!123"));
                 Assert.Equal("123***123", _hc.SecretMasker.MaskSecrets("123Pass''word''123!123"));
-                Assert.Equal("OlBh***", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($":Password123!"))));
-                Assert.Equal("YTpQ***", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($"a:Password123!"))));
+                Assert.Equal("OlBh***==", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($":Password123!"))));
+                Assert.Equal("YTpQ***=", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($"a:Password123!"))));
                 Assert.Equal("YWI6***", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($"ab:Password123!"))));
-                Assert.Equal("YWJjOlBh***", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($"abc:Password123!"))));
-                Assert.Equal("YWJjZDpQ***", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($"abcd:Password123!"))));
+                Assert.Equal("YWJjOlBh***==", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($"abc:Password123!"))));
+                Assert.Equal("YWJjZDpQ***=", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($"abcd:Password123!"))));
                 Assert.Equal("YWJjZGU6***", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($"abcde:Password123!"))));
                 Assert.Equal("123***123", _hc.SecretMasker.MaskSecrets("123Password123!!123"));
                 Assert.Equal("123short123", _hc.SecretMasker.MaskSecrets("123short123"));
@@ -112,6 +112,116 @@ namespace GitHub.Runner.Common.Tests
             }
         }
 
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Common")]
+        public void Base64SecretMaskers()
+        {
+
+            // The following are good candidate strings for Base64 encoding because they include
+            // both standard and RFC 4648 Base64 digits in all offset variations.
+            //   TeLL? noboDy~ SEcreT?
+            //   tElL~ NEVER~ neveR?
+            //   TIGht? Tight~ guard~
+            //   pRIVAte~ guARd? TIghT~
+            //   KeeP~ TIgHT? tIgHT~
+            //   LoCk? TiGhT~ TIght~
+            //   DIvULGe~ nObODY~ noBOdy?
+            //   foreVER~ Tight~ GUaRd?
+
+            try
+            {
+                // Arrange.
+                Setup();
+
+                // Act.
+                _hc.SecretMasker.AddValue("TeLL? noboDy~ SEcreT?");
+
+                // The above string has the following Base64 variations based on the chop leading byte(s) method of Base64 aliasing:
+                var base64Variations = new[]
+                {
+                    "VGVMTD8gbm9ib0R5fiBTRWNyZVQ/",
+                    "ZUxMPyBub2JvRHl+IFNFY3JlVD8",
+                    "TEw/IG5vYm9EeX4gU0VjcmVUPw",
+
+                    // RFC 4648 (URL-safe Base64)
+                    "VGVMTD8gbm9ib0R5fiBTRWNyZVQ_",
+                    "ZUxMPyBub2JvRHl-IFNFY3JlVD8",
+                    "TEw_IG5vYm9EeX4gU0VjcmVUPw"
+                };
+
+                var bookends = new[]
+                {
+                    (string.Empty, string.Empty),
+                    (string.Empty, "="),
+                    (string.Empty, "=="),
+                    (string.Empty, "==="),
+                    ("a", "z"),
+                    ("A", "Z"),
+                    ("abc", "abc"),
+                    ("ABC", "ABC"),
+                    ("0", "0"),
+                    ("00", "00"),
+                    ("000", "000"),
+                    ("123", "789"),
+                    ("`", "`"),
+                    ("'", "'"),
+                    ("\"", "\""),
+                    ("[", "]"),
+                    ("(", ")"),
+                    ("$(", ")"),
+                    ("{", "}"),
+                    ("${", "}"),
+                    ("!", "!"),
+                    ("!!", "!!"),
+                    ("%", "%"),
+                    ("%%", "%%"),
+                    ("_", "_"),
+                    ("__", "__"),
+                    (":", ":"),
+                    ("::", "::"),
+                    (";", ";"),
+                    (";;", ";;"),
+                    (":", string.Empty),
+                    (";", string.Empty),
+                    (string.Empty, ":"),
+                    (string.Empty, ";"),
+                    ("VGVMTD8gbm9ib", "ZUxMPy"),
+                    ("VGVMTD8gbm9ib", "TEw/IG5vYm9EeX4"),
+                    ("ZUxMPy", "TEw/IG5vYm9EeX4"),
+                    ("VGVMTD8gbm9ib", string.Empty),
+                    ("TEw/IG5vYm9EeX4", string.Empty),
+                    ("ZUxMPy", string.Empty),
+                    (string.Empty, "VGVMTD8gbm9ib"),
+                    (string.Empty, "TEw/IG5vYm9EeX4"),
+                    (string.Empty, "ZUxMPy"),
+                };
+
+                foreach (var variation in base64Variations)
+                {
+                    foreach (var pair in bookends)
+                    {
+                        var (prefix, suffix) = pair;
+                        var expected = string.Format("{0}{1}{2}", prefix, EXPECTED_SECRET_MASK, suffix);
+                        var payload = string.Format("{0}{1}{2}", prefix, variation, suffix);
+                        Assert.Equal(expected, _hc.SecretMasker.MaskSecrets(payload));
+                    }
+
+                    // Verify no masking is performed on a partial match.
+                    for (int i = 1; i < variation.Length - 1; i++)
+                    {
+                        var fragment = variation[..i];
+                        Assert.Equal(fragment, _hc.SecretMasker.MaskSecrets(fragment));
+                    }
+                }
+            }
+            finally
+            {
+                // Cleanup.
+                Teardown();
+            }
+        }
+
         [Theory]
         [InlineData("secret&secret&secret", "secret&secret&\x0033[96msecret\x0033[0m", "***\x0033[96m***\x0033[0m")]
         [InlineData("secret&secret+secret", "secret&\x0033[96msecret+secret\x0033[0m", "***\x0033[96m***\x0033[0m")]

src/Test/L0/Listener/Configuration/ConfigurationManagerL0.cs

@@ -19,6 +19,7 @@ namespace GitHub.Runner.Common.Tests.Listener.Configuration
     public class ConfigurationManagerL0
     {
         private Mock<IRunnerServer> _runnerServer;
+        private Mock<IRunnerDotcomServer> _dotcomServer;
         private Mock<ILocationServer> _locationServer;
         private Mock<ICredentialManager> _credMgr;
         private Mock<IPromptManager> _promptManager;
@@ -55,6 +56,7 @@ namespace GitHub.Runner.Common.Tests.Listener.Configuration
             _store = new Mock<IConfigurationStore>();
             _extnMgr = new Mock<IExtensionManager>();
             _rsaKeyManager = new Mock<IRSAKeyManager>();
+            _dotcomServer = new Mock<IRunnerDotcomServer>();
 
 #if OS_WINDOWS
             _serviceControlManager = new Mock<IWindowsServiceControlManager>();
@@ -71,6 +73,13 @@ namespace GitHub.Runner.Common.Tests.Listener.Configuration
                 AuthorizationUrl = new Uri("http://localhost:8080/pipelines"),
             };
 
+            var expectedRunner = new GitHub.DistributedTask.WebApi.Runner() { Name = expectedAgent.Name, Id = 1 };
+            expectedRunner.RunnerAuthorization = new GitHub.DistributedTask.WebApi.Runner.Authorization
+            {
+                ClientId = expectedAgent.Authorization.ClientId.ToString(),
+                AuthorizationUrl = new Uri("http://localhost:8080/pipelines"),
+            };
+
             var connectionData = new ConnectionData()
             {
                 InstanceId = Guid.NewGuid(),
@@ -106,6 +115,10 @@ namespace GitHub.Runner.Common.Tests.Listener.Configuration
             _runnerServer.Setup(x => x.AddAgentAsync(It.IsAny<int>(), It.IsAny<TaskAgent>())).Returns(Task.FromResult(expectedAgent));
             _runnerServer.Setup(x => x.ReplaceAgentAsync(It.IsAny<int>(), It.IsAny<TaskAgent>())).Returns(Task.FromResult(expectedAgent));
 
+            _dotcomServer.Setup(x => x.GetRunnersAsync(It.IsAny<int>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>())).Returns(Task.FromResult(expectedAgents));
+            _dotcomServer.Setup(x => x.GetRunnerGroupsAsync(It.IsAny<string>(), It.IsAny<string>())).Returns(Task.FromResult(expectedPools));
+            _dotcomServer.Setup(x => x.AddRunnerAsync(It.IsAny<int>(), It.IsAny<TaskAgent>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>())).Returns(Task.FromResult(expectedRunner));
+
             rsa = new RSACryptoServiceProvider(2048);
 
             _rsaKeyManager.Setup(x => x.CreateKey()).Returns(rsa);
@@ -119,6 +132,7 @@ namespace GitHub.Runner.Common.Tests.Listener.Configuration
             tc.SetSingleton<IConfigurationStore>(_store.Object);
             tc.SetSingleton<IExtensionManager>(_extnMgr.Object);
             tc.SetSingleton<IRunnerServer>(_runnerServer.Object);
+            tc.SetSingleton<IRunnerDotcomServer>(_dotcomServer.Object);
             tc.SetSingleton<ILocationServer>(_locationServer.Object);
 
 #if OS_WINDOWS

src/Test/L0/Listener/JobDispatcherL0.cs

@@ -1,12 +1,17 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Reflection;
 using System.Threading;
 using System.Threading.Tasks;
+using GitHub.DistributedTask.ObjectTemplating.Tokens;
+using GitHub.DistributedTask.Pipelines;
+using GitHub.DistributedTask.Pipelines.ContextData;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Listener;
+using GitHub.Runner.Listener.Configuration;
 using GitHub.Services.WebApi;
 using Moq;
+using Sdk.RSWebApi.Contracts;
 using Xunit;
 
 using Pipelines = GitHub.DistributedTask.Pipelines;
@@ -18,6 +23,8 @@ namespace GitHub.Runner.Common.Tests.Listener
         private Mock<IProcessChannel> _processChannel;
         private Mock<IProcessInvoker> _processInvoker;
         private Mock<IRunnerServer> _runnerServer;
+
+        private Mock<IRunServer> _runServer;
         private Mock<IConfigurationStore> _configurationStore;
 
         public JobDispatcherL0()
@@ -25,6 +32,7 @@ namespace GitHub.Runner.Common.Tests.Listener
             _processChannel = new Mock<IProcessChannel>();
             _processInvoker = new Mock<IProcessInvoker>();
             _runnerServer = new Mock<IRunnerServer>();
+            _runServer = new Mock<IRunServer>();
             _configurationStore = new Mock<IConfigurationStore>();
         }
 
@@ -139,7 +147,7 @@ namespace GitHub.Runner.Common.Tests.Listener
                 var jobDispatcher = new JobDispatcher();
                 jobDispatcher.Initialize(hc);
 
-                await jobDispatcher.RenewJobRequestAsync(poolId, requestId, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
+                await jobDispatcher.RenewJobRequestAsync(It.IsAny<AgentJobRequestMessage>(), It.IsAny<ServiceEndpoint>(), poolId, requestId, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
 
                 Assert.True(firstJobRequestRenewed.Task.IsCompletedSuccessfully);
                 _runnerServer.Verify(x => x.RenewAgentRequestAsync(It.IsAny<int>(), It.IsAny<long>(), It.IsAny<Guid>(), It.IsAny<string>(), It.IsAny<CancellationToken>()), Times.Exactly(5));
@@ -197,7 +205,7 @@ namespace GitHub.Runner.Common.Tests.Listener
                 var jobDispatcher = new JobDispatcher();
                 jobDispatcher.Initialize(hc);
 
-                await jobDispatcher.RenewJobRequestAsync(poolId, requestId, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
+                await jobDispatcher.RenewJobRequestAsync(It.IsAny<AgentJobRequestMessage>(), It.IsAny<ServiceEndpoint>(), poolId, requestId, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
 
                 Assert.True(firstJobRequestRenewed.Task.IsCompletedSuccessfully, "First renew should succeed.");
                 Assert.False(cancellationTokenSource.IsCancellationRequested);
@@ -205,6 +213,75 @@ namespace GitHub.Runner.Common.Tests.Listener
             }
         }
 
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Runner")]
+        public async void DispatcherRenewJobOnRunServiceStopOnJobNotFoundExceptions()
+        {
+            //Arrange
+            using (var hc = new TestHostContext(this))
+            {
+                int poolId = 1;
+                Int64 requestId = 1000;
+                int count = 0;
+
+                var trace = hc.GetTrace(nameof(DispatcherRenewJobOnRunServiceStopOnJobNotFoundExceptions));
+                TaskCompletionSource<int> firstJobRequestRenewed = new();
+                CancellationTokenSource cancellationTokenSource = new();
+
+                TaskAgentJobRequest request = new();
+                PropertyInfo lockUntilProperty = request.GetType().GetProperty("LockedUntil", BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);
+                Assert.NotNull(lockUntilProperty);
+                lockUntilProperty.SetValue(request, DateTime.UtcNow.AddMinutes(5));
+
+                hc.SetSingleton<IRunServer>(_runServer.Object);
+                hc.SetSingleton<IConfigurationStore>(_configurationStore.Object);
+                _configurationStore.Setup(x => x.GetSettings()).Returns(new RunnerSettings() { PoolId = 1 });
+                _ = _runServer.Setup(x => x.RenewJobAsync(It.IsAny<Guid>(), It.IsAny<Guid>(), It.IsAny<CancellationToken>()))
+                            .Returns(() =>
+                            {
+                                count++;
+                                if (!firstJobRequestRenewed.Task.IsCompletedSuccessfully)
+                                {
+                                    trace.Info("First renew happens.");
+                                }
+
+                                if (count < 5)
+                                {
+                                    var response = new RenewJobResponse()
+                                    {
+                                        LockedUntil = request.LockedUntil.Value
+                                    };
+                                    return Task.FromResult<RenewJobResponse>(response);
+                                }
+                                else if (count == 5)
+                                {
+                                    cancellationTokenSource.CancelAfter(10000);
+                                    throw new TaskOrchestrationJobNotFoundException("");
+                                }
+                                else
+                                {
+                                    throw new InvalidOperationException("Should not reach here.");
+                                }
+                            });
+
+
+                var jobDispatcher = new JobDispatcher();
+                jobDispatcher.Initialize(hc);
+                EnableRunServiceJobForJobDispatcher(jobDispatcher);
+
+                // Set the value of the _isRunServiceJob field to true
+                var isRunServiceJobField = typeof(JobDispatcher).GetField("_isRunServiceJob", BindingFlags.NonPublic | BindingFlags.Instance);
+                isRunServiceJobField.SetValue(jobDispatcher, true);
+
+                await jobDispatcher.RenewJobRequestAsync(GetAgentJobRequestMessage(), GetServiceEndpoint(), poolId, requestId, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
+
+                Assert.True(firstJobRequestRenewed.Task.IsCompletedSuccessfully, "First renew should succeed.");
+                Assert.False(cancellationTokenSource.IsCancellationRequested);
+                _runServer.Verify(x => x.RenewJobAsync(It.IsAny<Guid>(), It.IsAny<Guid>(), It.IsAny<CancellationToken>()), Times.Exactly(5));
+            }
+        }
+
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Runner")]
@@ -256,7 +333,7 @@ namespace GitHub.Runner.Common.Tests.Listener
                 var jobDispatcher = new JobDispatcher();
                 jobDispatcher.Initialize(hc);
 
-                await jobDispatcher.RenewJobRequestAsync(poolId, requestId, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
+                await jobDispatcher.RenewJobRequestAsync(It.IsAny<AgentJobRequestMessage>(), It.IsAny<ServiceEndpoint>(), poolId, requestId, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
 
                 Assert.True(firstJobRequestRenewed.Task.IsCompletedSuccessfully, "First renew should succeed.");
                 Assert.False(cancellationTokenSource.IsCancellationRequested);
@@ -312,8 +389,9 @@ namespace GitHub.Runner.Common.Tests.Listener
                 var jobDispatcher = new JobDispatcher();
                 jobDispatcher.Initialize(hc);
 
+
                 // Act
-                await jobDispatcher.RenewJobRequestAsync(0, 0, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
+                await jobDispatcher.RenewJobRequestAsync(It.IsAny<AgentJobRequestMessage>(), It.IsAny<ServiceEndpoint>(), 0, 0, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
 
                 // Assert
                 _configurationStore.Verify(x => x.SaveSettings(It.Is<RunnerSettings>(settings => settings.AgentName == newName)), Times.Once);
@@ -368,7 +446,7 @@ namespace GitHub.Runner.Common.Tests.Listener
                 jobDispatcher.Initialize(hc);
 
                 // Act
-                await jobDispatcher.RenewJobRequestAsync(0, 0, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
+                await jobDispatcher.RenewJobRequestAsync(It.IsAny<AgentJobRequestMessage>(), It.IsAny<ServiceEndpoint>(), 0, 0, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
 
                 // Assert
                 _configurationStore.Verify(x => x.SaveSettings(It.IsAny<RunnerSettings>()), Times.Never);
@@ -421,7 +499,7 @@ namespace GitHub.Runner.Common.Tests.Listener
                 jobDispatcher.Initialize(hc);
 
                 // Act
-                await jobDispatcher.RenewJobRequestAsync(0, 0, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
+                await jobDispatcher.RenewJobRequestAsync(It.IsAny<AgentJobRequestMessage>(), It.IsAny<ServiceEndpoint>(), 0, 0, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
 
                 // Assert
                 _configurationStore.Verify(x => x.SaveSettings(It.IsAny<RunnerSettings>()), Times.Never);
@@ -479,7 +557,7 @@ namespace GitHub.Runner.Common.Tests.Listener
                 var jobDispatcher = new JobDispatcher();
                 jobDispatcher.Initialize(hc);
 
-                await jobDispatcher.RenewJobRequestAsync(poolId, requestId, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
+                await jobDispatcher.RenewJobRequestAsync(It.IsAny<AgentJobRequestMessage>(), It.IsAny<ServiceEndpoint>(), poolId, requestId, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
 
                 Assert.True(firstJobRequestRenewed.Task.IsCompletedSuccessfully, "First renew should succeed.");
                 Assert.True(cancellationTokenSource.IsCancellationRequested);
@@ -536,7 +614,7 @@ namespace GitHub.Runner.Common.Tests.Listener
                 var jobDispatcher = new JobDispatcher();
                 jobDispatcher.Initialize(hc);
 
-                await jobDispatcher.RenewJobRequestAsync(poolId, requestId, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
+                await jobDispatcher.RenewJobRequestAsync(It.IsAny<AgentJobRequestMessage>(), It.IsAny<ServiceEndpoint>(), poolId, requestId, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
 
                 Assert.False(firstJobRequestRenewed.Task.IsCompletedSuccessfully, "First renew should failed.");
                 Assert.False(cancellationTokenSource.IsCancellationRequested);
@@ -600,7 +678,7 @@ namespace GitHub.Runner.Common.Tests.Listener
                 var jobDispatcher = new JobDispatcher();
                 jobDispatcher.Initialize(hc);
 
-                await jobDispatcher.RenewJobRequestAsync(poolId, requestId, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
+                await jobDispatcher.RenewJobRequestAsync(It.IsAny<AgentJobRequestMessage>(), It.IsAny<ServiceEndpoint>(), poolId, requestId, Guid.Empty, Guid.NewGuid().ToString(), firstJobRequestRenewed, cancellationTokenSource.Token);
 
                 Assert.True(firstJobRequestRenewed.Task.IsCompletedSuccessfully, "First renew should succeed.");
                 Assert.False(cancellationTokenSource.IsCancellationRequested);
@@ -659,5 +737,78 @@ namespace GitHub.Runner.Common.Tests.Listener
                 Assert.True(jobDispatcher.RunOnceJobCompleted.Task.Result, "JobDispatcher should set task complete token to 'TRUE' for one time agent.");
             }
         }
+
+        private static void EnableRunServiceJobForJobDispatcher(JobDispatcher jobDispatcher)
+        {
+            // Set the value of the _isRunServiceJob field to true
+            var isRunServiceJobField = typeof(JobDispatcher).GetField("_isRunServiceJob", BindingFlags.NonPublic | BindingFlags.Instance);
+            isRunServiceJobField.SetValue(jobDispatcher, true);
+        }
+
+        private static ServiceEndpoint GetServiceEndpoint()
+        {
+            var serviceEndpoint = new ServiceEndpoint
+            {
+                Authorization = new EndpointAuthorization
+                {
+                    Scheme = EndpointAuthorizationSchemes.OAuth
+                }
+            };
+            serviceEndpoint.Authorization.Parameters.Add("AccessToken", "token");
+            return serviceEndpoint;
+        }
+
+        private static AgentJobRequestMessage GetAgentJobRequestMessage()
+        {
+            var message = new AgentJobRequestMessage(
+                new TaskOrchestrationPlanReference()
+                {
+                    PlanType = "Build",
+                    PlanId = Guid.NewGuid(),
+                    Version = 1
+                },
+                new TimelineReference()
+                {
+                    Id = Guid.NewGuid()
+                },
+                Guid.NewGuid(),
+                "jobDisplayName",
+                "jobName",
+                null,
+                null,
+                new List<TemplateToken>(),
+                new Dictionary<string, VariableValue>()
+                {
+                    {
+                        "variables",
+                        new VariableValue()
+                        {
+                            IsSecret = false,
+                            Value = "variables"
+                        }
+                    }
+                },
+                new List<MaskHint>()
+                {
+                    new MaskHint()
+                    {
+                        Type = MaskType.Variable,
+                        Value = "maskHints"
+                    }
+                },
+                new JobResources(),
+                new DictionaryContextData(),
+                new WorkspaceOptions(),
+                new List<JobStep>(),
+                new List<string>()
+                {
+                    "fileTable"
+                },
+                null,
+                new List<TemplateToken>(),
+                new ActionsEnvironmentReference("env")
+            );
+            return message;
+        }
     }
 }

src/Test/L0/RunnerWebProxyL0.cs

@@ -351,7 +351,7 @@ namespace GitHub.Runner.Common.Tests
                 Assert.False(proxy.IsBypassed(new Uri("https://actions.com")));
                 Assert.False(proxy.IsBypassed(new Uri("https://ggithub.com")));
                 Assert.False(proxy.IsBypassed(new Uri("https://github.comm")));
-                Assert.False(proxy.IsBypassed(new Uri("https://google.com")));
+                Assert.False(proxy.IsBypassed(new Uri("https://google.com"))); // no_proxy has '.google.com', specifying only subdomains bypass
                 Assert.False(proxy.IsBypassed(new Uri("https://example.com")));
                 Assert.False(proxy.IsBypassed(new Uri("http://example.com:333")));
                 Assert.False(proxy.IsBypassed(new Uri("http://192.168.0.123:123")));
@@ -374,6 +374,76 @@ namespace GitHub.Runner.Common.Tests
                 CleanProxyEnv();
             }
         }
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Common")]
+        public void BypassAllOnWildcardNoProxy()
+        {
+            try
+            {
+                Environment.SetEnvironmentVariable("http_proxy", "http://user1:pass1%40@127.0.0.1:8888");
+                Environment.SetEnvironmentVariable("https_proxy", "http://user2:pass2%40@127.0.0.1:9999");
+                Environment.SetEnvironmentVariable("no_proxy", "example.com, * , example2.com");
+                var proxy = new RunnerWebProxy();
+
+                Assert.True(proxy.IsBypassed(new Uri("http://actions.com")));
+                Assert.True(proxy.IsBypassed(new Uri("http://localhost")));
+                Assert.True(proxy.IsBypassed(new Uri("http://127.0.0.1:8080")));
+                Assert.True(proxy.IsBypassed(new Uri("https://actions.com")));
+                Assert.True(proxy.IsBypassed(new Uri("https://localhost")));
+                Assert.True(proxy.IsBypassed(new Uri("https://127.0.0.1:8080")));
+            }
+            finally
+            {
+                CleanProxyEnv();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Common")]
+        public void IgnoreWildcardInNoProxySubdomain()
+        {
+            try
+            {
+                Environment.SetEnvironmentVariable("http_proxy", "http://user1:pass1%40@127.0.0.1:8888");
+                Environment.SetEnvironmentVariable("https_proxy", "http://user2:pass2%40@127.0.0.1:9999");
+                Environment.SetEnvironmentVariable("no_proxy", "*.example.com");
+                var proxy = new RunnerWebProxy();
+
+                Assert.False(proxy.IsBypassed(new Uri("http://sub.example.com")));
+                Assert.False(proxy.IsBypassed(new Uri("http://example.com")));
+            }
+            finally
+            {
+                CleanProxyEnv();
+            }
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Common")]
+        public void WildcardNoProxyWorksWhenOtherNoProxyAreAround()
+        {
+            try
+            {
+                Environment.SetEnvironmentVariable("http_proxy", "http://user1:pass1%40@127.0.0.1:8888");
+                Environment.SetEnvironmentVariable("https_proxy", "http://user2:pass2%40@127.0.0.1:9999");
+                Environment.SetEnvironmentVariable("no_proxy", "example.com,*,example2.com");
+                var proxy = new RunnerWebProxy();
+
+                Assert.True(proxy.IsBypassed(new Uri("http://actions.com")));
+                Assert.True(proxy.IsBypassed(new Uri("http://localhost")));
+                Assert.True(proxy.IsBypassed(new Uri("http://127.0.0.1:8080")));
+                Assert.True(proxy.IsBypassed(new Uri("https://actions.com")));
+                Assert.True(proxy.IsBypassed(new Uri("https://localhost")));
+                Assert.True(proxy.IsBypassed(new Uri("https://127.0.0.1:8080")));
+            }
+            finally
+            {
+                CleanProxyEnv();
+            }
+        }
 
         [Fact]
         [Trait("Level", "L0")]

src/Test/L0/TestHostContext.cs

@@ -1,4 +1,4 @@
-using GitHub.Runner.Common.Util;
+using GitHub.Runner.Common.Util;
 using System;
 using System.Collections.Concurrent;
 using System.Globalization;
@@ -56,9 +56,12 @@ namespace GitHub.Runner.Common.Tests
             }
 
             var traceListener = new HostTraceListener(TraceFileName);
-            _secretMasker = new SecretMasker();
-            _secretMasker.AddValueEncoder(ValueEncoders.JsonStringEscape);
-            _secretMasker.AddValueEncoder(ValueEncoders.UriDataEscape);
+            var encoders = new List<ValueEncoder>()
+            {
+                ValueEncoders.JsonStringEscape,
+                ValueEncoders.UriDataEscape
+            };
+            _secretMasker = new SecretMasker(encoders);
             _traceManager = new TraceManager(traceListener, null, _secretMasker);
             _trace = GetTrace(nameof(TestHostContext));
 

src/Test/L0/Util/IOUtilL0.cs

@@ -1,4 +1,3 @@
-using GitHub.Runner.Common.Util;
 using GitHub.Runner.Sdk;
 using System;
 using System.IO;
@@ -931,6 +930,36 @@ namespace GitHub.Runner.Common.Tests.Util
             }
         }
 
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Common")]
+        public void LoadObject_ThrowsOnRequiredLoadObject()
+        {
+            using (TestHostContext hc = new(this))
+            {
+                Tracing trace = hc.GetTrace();
+
+                // Arrange: Create a directory with a file.
+                string directory = Path.Combine(hc.GetDirectory(WellKnownDirectory.Bin), Path.GetRandomFileName());
+
+                string file = Path.Combine(directory, "empty file");
+                Directory.CreateDirectory(directory);
+
+                File.WriteAllText(path: file, contents: "");
+                Assert.Throws<ArgumentNullException>(() => IOUtil.LoadObject<RunnerSettings>(file, true));
+
+                file = Path.Combine(directory, "invalid type file");
+                File.WriteAllText(path: file, contents: " ");
+                Assert.Throws<ArgumentException>(() => IOUtil.LoadObject<RunnerSettings>(file, true));
+
+                // Cleanup.
+                if (Directory.Exists(directory))
+                {
+                    Directory.Delete(directory, recursive: true);
+                }
+            }
+        }
+
         private static async Task CreateDirectoryReparsePoint(IHostContext context, string link, string target)
         {
 #if OS_WINDOWS

src/Test/TestData/conditional_composite_action.yml

@@ -25,25 +25,25 @@ runs:
       - run: exit ${{ inputs.exit-code }}
         shell: bash
 
-      - run: echo "::set-output name=default::true"
+      - run: echo "default=true" >> $GITHUB_OUTPUT
         id: default-conditional
         shell: bash
 
-      - run: echo "::set-output name=success::true"
+      - run: echo "success=true" >> $GITHUB_OUTPUT
         id: success-conditional
         shell: bash
         if: success()
 
-      - run: echo "::set-output name=failure::true"
+      - run: echo "failure=true" >> $GITHUB_OUTPUT
         id: failure-conditional
         shell: bash
         if: failure()
 
-      - run: echo "::set-output name=always::true"
+      - run: echo "always=true" >> $GITHUB_OUTPUT
         id: always-conditional
         shell: bash
         if: always()
 
       - run: echo "failed"
         shell: bash
-        if: ${{ inputs.exit-code == 1 && failure() }}
+        if: ${{ inputs.exit-code == 1 && failure() }}

src/runnerversion

@@ -1 +1 @@
-2.302.1
+2.303.0