fix(repo): Handle errors in E2E proxy server (#5328)

Author: jacekradko

integration/scripts/proxyServer.ts

@@ -1,3 +1,4 @@
+import type { IncomingMessage, ServerResponse } from 'node:http';
 import http from 'node:http';
 import type { createServer as _createServer, Server, ServerOptions } from 'node:https';
 import https from 'node:https';
@@ -14,14 +15,23 @@ type ProxyServerOptions = {
  * The server will listen on port 80 (http) or 443 (https) depending on whether SSL options are provided.
  */
 export const createProxyServer = (opts: ProxyServerOptions) => {
-  const proxy = httpProxy.createProxyServer({ xfwd: true });
   const usingSSL = !!opts.ssl;
+
+  const proxy = httpProxy.createProxyServer({
+    secure: usingSSL,
+    xfwd: true,
+  });
+
+  // We need to handle errors to avoid crashing the proxy server
+  proxy.on('error', (err: Error, req: IncomingMessage, res: ServerResponse) => {
+    console.error(`[Proxy Error]: ${req.url}`, err);
+    res.writeHead(502);
+    res.end('Proxy error');
+  });
+
   const createServer: typeof _createServer = usingSSL ? https.createServer.bind(https) : http.createServer.bind(http);
 
   return createServer(opts.ssl, (req, res) => {
-    console.log(`/n/n/n/n------------------------------------`);
-    console.log('Proxying request', req.headers.host, req.url);
-    console.log('Headers', req.headers);
     const hostHeader = req.headers.host || '';
     if (opts.targets[hostHeader]) {
       proxy.web(req, res, { target: opts.targets[hostHeader] });