Add HTTP proxy

.devcontainer/http-proxy-test/.vscode/tasks.json

@@ -0,0 +1,50 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "watch",
+            "dependsOn": [
+                "npm: pac-server:run",
+                "npm: proxy-1:access-log",
+                "npm: proxy-2:access-log"
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+            "runOptions": {
+                "runOn": "folderOpen"
+            }
+        },
+        {
+            "type": "npm",
+            "script": "pac-server:run",
+            "group": "build",
+            "isBackground": true,
+            "label": "npm: pac-server:run",
+            "presentation": {
+                "group": "watch"
+            }
+        },
+        {
+            "type": "npm",
+            "script": "proxy-1:access-log",
+            "group": "build",
+            "isBackground": true,
+            "label": "npm: proxy-1:access-log",
+            "presentation": {
+                "group": "watch"
+            }
+        },
+        {
+            "type": "npm",
+            "script": "proxy-2:access-log",
+            "group": "build",
+            "isBackground": true,
+            "label": "npm: proxy-2:access-log",
+            "presentation": {
+                "group": "watch"
+            }
+        }
+    ]
+}

.devcontainer/http-proxy-test/README.md

@@ -0,0 +1,16 @@
+## HTTP Proxy Test
+
+Use this dev container configuration with a different VS Code install than you want to test (e.g., use VS Code stable if you want to test VS Code Insiders).
+- `Dev Containers: Reopen in Container` > `HTTP Proxy Test`.
+- The dev container should show 3 log terminals: 1 for the proxy config (PAC), 2 for 2 proxies (no authentication).
+- Locally start VS Code to test with the PAC file's URL, e.g.: `code-insiders --proxy-pac-url=http://localhost:4444`.
+	- Connections to *.github.com go through 127.0.0.1:3144.
+	- Connections to *.githubcopilot.com go through 127.0.0.1:3144.
+	- All other connections go through 127.0.0.1:3155.
+- Install GitHub Copilot Chat and use `Developer: GitHub Copilot Chat Diagnostics` to test connections.
+- Verify in the log terminals of the dev container that the PAC file and the proxies are being used.
+
+Optional (from other test passes):
+- To further check extension support install https://marketplace.visualstudio.com/items?itemName=chrmarti.network-proxy-test.
+	- Update `test.pac` to apply the proxies to different domains, e.g., `https://example.com` and `https://marketplace.visualstudio.com`.
+	- Use `Network Proxy Test: Test Network Connection` to test.

.devcontainer/http-proxy-test/devcontainer-lock.json

@@ -0,0 +1,9 @@
+{
+  "features": {
+    "ghcr.io/devcontainers/features/docker-outside-of-docker:1": {
+      "version": "1.5.0",
+      "resolved": "ghcr.io/devcontainers/features/docker-outside-of-docker@sha256:20761bd733511c1995ee955682cc2778b0a2e556abf88e9b88490c3be3c80bbc",
+      "integrity": "sha256:20761bd733511c1995ee955682cc2778b0a2e556abf88e9b88490c3be3c80bbc"
+    }
+  }
+}

.devcontainer/http-proxy-test/devcontainer.json

@@ -0,0 +1,10 @@
+{
+	"name": "HTTP Proxy Test",
+	"dockerComposeFile": "docker-compose.yml",
+	"service": "devcontainer",
+	"workspaceFolder": "/workspaces/${localWorkspaceFolderBasename}/.devcontainer/http-proxy-test",
+	"features": {
+		"ghcr.io/devcontainers/features/docker-outside-of-docker:1": {}
+	},
+	"overrideCommand": true
+}

.devcontainer/http-proxy-test/docker-compose.yml

@@ -0,0 +1,23 @@
+version: '3.4'
+
+services:
+    devcontainer:
+        image: mcr.microsoft.com/devcontainers/typescript-node:1-22-bookworm
+        volumes:
+            - ../../..:/workspaces
+        ports:
+            - "127.0.0.1:4444:4444"
+    http-proxy-1:
+        restart: always
+        build:
+            context: http-proxy
+            dockerfile: Dockerfile
+        ports:
+            - "127.0.0.1:3144:3128"
+    http-proxy-2:
+        restart: always
+        build:
+            context: http-proxy
+            dockerfile: Dockerfile
+        ports:
+            - "127.0.0.1:3155:3128"

.devcontainer/http-proxy-test/http-proxy/Dockerfile

@@ -0,0 +1,4 @@
+FROM ubuntu/squid:latest
+
+COPY open.conf /etc/squid/conf.d/squid.acl.conf
+RUN sed -e '/^http_access/ s/^#*/#/' -i /etc/squid/conf.d/debian.conf

.devcontainer/http-proxy-test/http-proxy/open.conf

@@ -0,0 +1 @@
+http_access allow all

.devcontainer/http-proxy-test/pac-server.js

@@ -0,0 +1,21 @@
+const http = require('http');
+const fs = require('fs');
+const path = require('path');
+
+const server = http.createServer((req, res) => {
+	console.log('Sending pac file...');
+	const filePath = path.join(__dirname, 'test.pac');
+	const stat = fs.statSync(filePath);
+
+	res.writeHead(200, {
+		'Content-Type': 'application/x-ns-proxy-autoconfig',
+		'Content-Length': stat.size
+	});
+
+	const readStream = fs.createReadStream(filePath);
+	readStream.pipe(res);
+});
+
+server.listen(4444, () => {
+	console.log('Server is running on port 4444');
+});

.devcontainer/http-proxy-test/package.json

@@ -0,0 +1,7 @@
+{
+	"scripts": {
+		"pac-server:run": "node pac-server.js",
+		"proxy-1:access-log": "while true; do docker exec -it http-proxy-test-http-proxy-1-1 tail -F /var/log/squid/access.log ; sleep 1 ; done",
+		"proxy-2:access-log": "while true; do docker exec -it http-proxy-test-http-proxy-2-1 tail -F /var/log/squid/access.log ; sleep 1 ; done"
+	}
+}

.devcontainer/http-proxy-test/test.pac

@@ -0,0 +1,7 @@
+function FindProxyForURL(url, host) {
+	if (dnsDomainIs(host, "github.com"))
+		return "PROXY 127.0.0.1:3144";
+	if (dnsDomainIs(host, "githubcopilot.com"))
+		return "PROXY 127.0.0.1:3144";
+	return "PROXY 127.0.0.1:3155";
+}