mirror of
https://github.com/actions/runner.git
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wip extension
This commit is contained in:
Francesco Renzi
36
browser-ext/proxy/package-lock.json
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36
browser-ext/proxy/package-lock.json
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{
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"name": "dap-websocket-proxy",
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"version": "1.0.0",
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"lockfileVersion": 3,
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"requires": true,
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"packages": {
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"": {
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"name": "dap-websocket-proxy",
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"version": "1.0.0",
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"dependencies": {
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"ws": "^8.16.0"
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}
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},
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"node_modules/ws": {
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"version": "8.19.0",
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"resolved": "https://registry.npmjs.org/ws/-/ws-8.19.0.tgz",
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"integrity": "sha512-blAT2mjOEIi0ZzruJfIhb3nps74PRWTCz1IjglWEEpQl5XS/UNama6u2/rjFkDDouqr4L67ry+1aGIALViWjDg==",
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"license": "MIT",
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"engines": {
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"node": ">=10.0.0"
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},
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"peerDependencies": {
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"bufferutil": "^4.0.1",
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"utf-8-validate": ">=5.0.2"
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},
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"peerDependenciesMeta": {
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"bufferutil": {
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"optional": true
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},
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"utf-8-validate": {
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"optional": true
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}
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}
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}
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}
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}
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12
browser-ext/proxy/package.json
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12
browser-ext/proxy/package.json
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{
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"name": "dap-websocket-proxy",
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"version": "1.0.0",
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"description": "WebSocket-to-TCP bridge for DAP debugging",
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"main": "proxy.js",
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"scripts": {
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"start": "node proxy.js"
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},
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"dependencies": {
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"ws": "^8.16.0"
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}
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}
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171
browser-ext/proxy/proxy.js
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171
browser-ext/proxy/proxy.js
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/**
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* DAP WebSocket-to-TCP Proxy
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*
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* Bridges WebSocket connections from browser extensions to the DAP TCP server.
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* Handles DAP message framing (Content-Length headers).
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*
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* Usage: node proxy.js [--ws-port 4712] [--dap-host 127.0.0.1] [--dap-port 4711]
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*/
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const WebSocket = require('ws');
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const net = require('net');
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// Configuration (can be overridden via CLI args)
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const config = {
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wsPort: parseInt(process.env.WS_PORT) || 4712,
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dapHost: process.env.DAP_HOST || '127.0.0.1',
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dapPort: parseInt(process.env.DAP_PORT) || 4711,
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};
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// Parse CLI arguments
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for (let i = 2; i < process.argv.length; i++) {
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switch (process.argv[i]) {
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case '--ws-port':
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config.wsPort = parseInt(process.argv[++i]);
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break;
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case '--dap-host':
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config.dapHost = process.argv[++i];
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break;
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case '--dap-port':
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config.dapPort = parseInt(process.argv[++i]);
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break;
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}
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}
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console.log(`[Proxy] Starting WebSocket-to-TCP proxy`);
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console.log(`[Proxy] WebSocket: ws://localhost:${config.wsPort}`);
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console.log(`[Proxy] DAP Server: tcp://${config.dapHost}:${config.dapPort}`);
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const wss = new WebSocket.Server({ port: config.wsPort });
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console.log(`[Proxy] WebSocket server listening on port ${config.wsPort}`);
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wss.on('connection', (ws, req) => {
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const clientId = `${req.socket.remoteAddress}:${req.socket.remotePort}`;
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console.log(`[Proxy] WebSocket client connected: ${clientId}`);
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// Connect to DAP TCP server
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const tcp = net.createConnection({
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host: config.dapHost,
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port: config.dapPort,
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});
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let tcpBuffer = '';
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let tcpConnected = false;
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tcp.on('connect', () => {
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tcpConnected = true;
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console.log(`[Proxy] Connected to DAP server at ${config.dapHost}:${config.dapPort}`);
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});
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tcp.on('error', (err) => {
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console.error(`[Proxy] TCP error: ${err.message}`);
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if (ws.readyState === WebSocket.OPEN) {
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ws.send(
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JSON.stringify({
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type: 'proxy-error',
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message: `Failed to connect to DAP server: ${err.message}`,
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})
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);
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ws.close(1011, 'DAP server connection failed');
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}
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});
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tcp.on('close', () => {
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console.log(`[Proxy] TCP connection closed`);
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if (ws.readyState === WebSocket.OPEN) {
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ws.close(1000, 'DAP server disconnected');
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}
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});
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// WebSocket → TCP: Add Content-Length framing
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ws.on('message', (data) => {
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if (!tcpConnected) {
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console.warn(`[Proxy] TCP not connected, dropping message`);
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return;
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}
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const json = data.toString();
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try {
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// Validate it's valid JSON
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const parsed = JSON.parse(json);
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console.log(`[Proxy] WS→TCP: ${parsed.command || parsed.event || 'message'}`);
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// Add DAP framing
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const framed = `Content-Length: ${Buffer.byteLength(json)}\r\n\r\n${json}`;
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tcp.write(framed);
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} catch (err) {
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console.error(`[Proxy] Invalid JSON from WebSocket: ${err.message}`);
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}
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});
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// TCP → WebSocket: Parse Content-Length framing
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tcp.on('data', (chunk) => {
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tcpBuffer += chunk.toString();
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// Process complete DAP messages from buffer
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while (true) {
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// Look for Content-Length header
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const headerEnd = tcpBuffer.indexOf('\r\n\r\n');
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if (headerEnd === -1) break;
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const header = tcpBuffer.substring(0, headerEnd);
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const match = header.match(/Content-Length:\s*(\d+)/i);
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if (!match) {
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console.error(`[Proxy] Invalid DAP header: ${header}`);
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tcpBuffer = tcpBuffer.substring(headerEnd + 4);
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continue;
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}
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const contentLength = parseInt(match[1]);
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const messageStart = headerEnd + 4;
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const messageEnd = messageStart + contentLength;
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// Check if we have the complete message
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if (tcpBuffer.length < messageEnd) break;
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// Extract the JSON message
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const json = tcpBuffer.substring(messageStart, messageEnd);
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tcpBuffer = tcpBuffer.substring(messageEnd);
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// Send to WebSocket
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try {
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const parsed = JSON.parse(json);
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console.log(
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`[Proxy] TCP→WS: ${parsed.type} ${parsed.command || parsed.event || ''} ${parsed.request_seq ? `(req_seq: ${parsed.request_seq})` : ''}`
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);
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if (ws.readyState === WebSocket.OPEN) {
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ws.send(json);
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}
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} catch (err) {
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console.error(`[Proxy] Invalid JSON from TCP: ${err.message}`);
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}
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}
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});
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// Handle WebSocket close
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ws.on('close', (code, reason) => {
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console.log(`[Proxy] WebSocket closed: ${code} ${reason}`);
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tcp.end();
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});
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ws.on('error', (err) => {
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console.error(`[Proxy] WebSocket error: ${err.message}`);
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tcp.end();
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});
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});
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wss.on('error', (err) => {
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console.error(`[Proxy] WebSocket server error: ${err.message}`);
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});
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// Graceful shutdown
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process.on('SIGINT', () => {
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console.log(`\n[Proxy] Shutting down...`);
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wss.clients.forEach((ws) => ws.close(1001, 'Server shutting down'));
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wss.close(() => {
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console.log(`[Proxy] Goodbye!`);
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process.exit(0);
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});
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});
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