[README] add Requirements section (#1000)

* [README] add Requirements section

This is based user feedback and testing. This may expand if need be

Signed-off-by: Ayane Satomi <chinodesuuu@gmail.com>

* [README] raised the bar a bit more

Apparently we were targeting GLIBC 2.17

Signed-off-by: Ayane Satomi <chinodesuuu@gmail.com>

.dockerignore

@@ -9,3 +9,4 @@ doc
 LICENSE
 README.md
 node_modules
+release

.travis.yml

@@ -1,49 +1,80 @@
 language: node_js
 node_js:
-- 10.16.0
+  - 10.16.0
 services:
-- docker
-matrix:
-  include:
-  - os: linux
-    dist: trusty
-    env:
-      - VSCODE_VERSION="1.38.1" MAJOR_VERSION="2" VERSION="$MAJOR_VERSION.$TRAVIS_BUILD_NUMBER" TARGET="linux"
-  - os: linux
-    dist: trusty
-    env:
-      - VSCODE_VERSION="1.38.1" MAJOR_VERSION="2" VERSION="$MAJOR_VERSION.$TRAVIS_BUILD_NUMBER" TARGET="alpine"
-  - os: osx
-    env:
-      - VSCODE_VERSION="1.38.1" MAJOR_VERSION="2" VERSION="$MAJOR_VERSION.$TRAVIS_BUILD_NUMBER"
+  - docker
+
 before_install:
-- if [[ "$TRAVIS_BRANCH" == "master" ]]; then export MINIFY="true"; fi
-- if [[ "$TRAVIS_BRANCH" == "master" ]]; then export PACKAGE="true"; fi
-script:
-- travis_wait 30 scripts/ci.bash
+  - export MAJOR_VERSION="2"
+  - export VSCODE_VERSION="1.38.1"
+  - export VERSION="$MAJOR_VERSION.$TRAVIS_BUILD_NUMBER"
+  - export TAG="$VERSION-vsc$VSCODE_VERSION"
+  - if [[ "$TRAVIS_BRANCH" == "master" ]]; then export MINIFY="true"; fi
+  - if [[ "$TRAVIS_BRANCH" == "master" ]]; then export PACKAGE="true"; fi
+
+# Don't build on tags because we'll already have built the commit.
+jobs:
+  include:
+    - name: "Linux build"
+      os: linux
+      dist: trusty
+      env: TARGET="linux"
+      if: tag IS blank
+      script: scripts/ci.bash
+    - name: "Alpine build"
+      os: linux
+      dist: trusty
+      env: TARGET="alpine"
+      if: tag IS blank
+      script: scripts/ci.bash
+    - name: "MacOS build"
+      os: osx
+      if: tag IS blank
+      script: travis_wait 30 scripts/ci.bash
+    - name: "Docker build"
+      os: linux
+      dist: trusty
+      env: DOCKER_BUILD="true"
+      if: branch == master AND tag IS blank
+      script: docker build --build-arg githubToken="$GITHUB_TOKEN" --build-arg codeServerVersion="$VERSION" --build-arg vscodeVersion="$VSCODE_VERSION" -t codercom/code-server:"$TAG" -t codercom/code-server:v2 .
+
+git:
+  depth: 3
+
 before_deploy:
-- echo "$VERSION-vsc$VSCODE_VERSION" "$TRAVIS_COMMIT"
-- git config --local user.name "$USER_NAME"
-- git config --local user.email "$USER_EMAIL"
-- git tag "$VERSION-vsc$VSCODE_VERSION" "$TRAVIS_COMMIT"
+  - echo "$TAG" "$TRAVIS_COMMIT"
+  - git config --local user.name "$USER_NAME"
+  - git config --local user.email "$USER_EMAIL"
+  - if ! git tag "$TAG" "$TRAVIS_COMMIT" ; then echo "$TAG already exists"; fi
+  - if [[ -n "$DOCKER_BUILD" ]] ; then echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USERNAME" --password-stdin ; fi
+
 deploy:
-  provider: releases
-  file_glob: true
-  draft: true
-  tag_name: "$VERSION-vsc$VSCODE_VERSION"
-  target_commitish: "$TRAVIS_COMMIT"
-  name: "$VERSION-vsc$VSCODE_VERSION"
-  skip_cleanup: true
-  api_key:
-    secure: YL/x24KjYjgYXPcJWk3FV7FGxI79Mh6gBECQEcdlf3fkLEoKFVgzHBoUNWrFPzyR4tgLyWNAgcpD9Lkme1TRWTom7UPjXcwMNyLcLa+uec7ciSAnYD9ntLTpiCuPDD1u0LtRGclSi/EHQ+F8YVq+HZJpXTsJeAmOmihma3GVbGKSZr+BRum+0YZSG4w+o4TOlYzw/4bLWS52MogZcwpjd+hemBbgXLuGU2ziKv2vEKCZFbEeA16II4x1WLI4mutDdCeh7+3aLzGLwDa49NxtsVYNjyNFF75JhCTCNA55e2YMiLz9Uq69IXe/mi5F7xUaFfhIqqLNyKBnKeEOzu3dYnc+8n3LjnQ+00PmkF05nx9kBn3UfV1kwQGh6QbyDmTtBP07rtUMyI14aeQqHjxsaVRdMnwj9Q2DjXRr8UDqESZF0rmK3pHCXS2fBhIzLE8tLVW5Heiba2pQRFMHMZW+KBE97FzcFh7is90Ait3T8enfcd/PWFPYoBejDAdjwxwOkezh5N5ZkYquEfDYuWrFi6zRFCktsruaAcA+xGtTf9oilBBzUqu8Ie+YFWH5me83xakcblJWdaW/D2rLJAJH3m6LFm8lBqyUgDX5t/etob6CpDuYHu5D1J3XINOj/+aLAcadq6qlh70PMZS3zYffUu3JlzaD2amlSHIT8b5YXFc=
-  file:
-    - release/*.tar.gz
-    - release/*.zip
-  on:
-    repo: cdr/code-server
-    branch: master
+  - provider: releases
+    file_glob: true
+    draft: true
+    tag_name: "$TAG"
+    target_commitish: "$TRAVIS_COMMIT"
+    name: "$TAG"
+    skip_cleanup: true
+    api_key:
+      secure: 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
+    file:
+      - release/*.tar.gz
+      - release/*.zip
+    on:
+      repo: cdr/code-server
+      branch: master
+
+  - provider: script
+    skip_cleanup: true
+    script: docker push codercom/code-server:"$TAG" ; docker push codercom/code-server:v2
+    on:
+      repo: cdr/code-server
+      branch: master
+      condition: -n "$DOCKER_BUILD"
+
 cache:
   yarn: true
   timeout: 1000
   directories:
-  - .cache
+    - .cache

Dockerfile

@@ -1,6 +1,7 @@
 FROM node:10.16.0
 ARG codeServerVersion=docker
 ARG vscodeVersion
+ARG githubToken
 
 # Install VS Code's deps. These are the only two it seems we need.
 RUN apt-get update && apt-get install -y \
@@ -14,9 +15,11 @@ WORKDIR /src
 COPY . .
 
 RUN yarn \
-	&& MINIFY=true yarn build "${vscodeVersion}" "${codeServerVersion}" \
+	&& MINIFY=true GITHUB_TOKEN="${githubToken}" yarn build "${vscodeVersion}" "${codeServerVersion}" \
 	&& yarn binary "${vscodeVersion}" "${codeServerVersion}" \
-	&& mv "/src/build/code-server${codeServerVersion}-vsc${vscodeVersion}-linux-x86_64-built/code-server${codeServerVersion}-vsc${vscodeVersion}-linux-x86_64" /src/build/code-server
+	&& mv "/src/build/code-server${codeServerVersion}-vsc${vscodeVersion}-linux-x86_64-built/code-server${codeServerVersion}-vsc${vscodeVersion}-linux-x86_64" /src/build/code-server \
+	&& rm -r /src/build/vscode-* \
+	&& rm -r /src/build/code-server*-linux-*
 
 # We deploy with ubuntu so that devs have a familiar environment.
 FROM ubuntu:18.04

README.md

@@ -5,7 +5,7 @@ remote server, accessible through the browser.
 
 Try it out:
 ```bash
-docker run -it -p 127.0.0.1:8080:8080 -v "${HOME}/.local/share/code-server:/home/coder/.local/share/code-server" -v "$PWD:/home/coder/project" codercom/code-server
+docker run -it -p 127.0.0.1:8080:8080 -v "${HOME}/.local/share/code-server:/home/coder/.local/share/code-server" -v "$PWD:/home/coder/project" codercom/code-server:v2
 ```
 
 - **Consistent environment:** Code on your Chromebook, tablet, and laptop with a
@@ -18,6 +18,15 @@ docker run -it -p 127.0.0.1:8080:8080 -v "${HOME}/.local/share/code-server:/home
 ![Screenshot](/doc/assets/ide.gif)
 
 ## Getting Started
+
+### Requirements
+
+- Minimum GLIBC version of 2.17 and a minimum version of GLIBCXX of 3.4.15.
+  - This is the main requirement for building Visual Studio Code. We cannot go lower than this.
+- A 64-bit host with at least 1GB RAM and 2 cores.
+   - 1 core hosts would work but not optimally.
+- Docker (for Docker versions of `code-server`).
+
 ### Run over SSH
 Use [sshcode](https://github.com/codercom/sshcode) for a simple setup.
 
@@ -30,6 +39,9 @@ you need to add `--security-opt seccomp=unconfined` to your `docker run`
 arguments when launching code-server with Docker. See
 [#725](https://github.com/cdr/code-server/issues/725) for details.
 
+### Digital Ocean
+[![Create a Droplet](./doc/assets/droplet.svg)](https://marketplace.digitalocean.com/apps/code-server?action=deploy)
+
 ### Binaries
 1. [Download a binary](https://github.com/cdr/code-server/releases). (Linux and
     OS X supported. Windows coming soon)
@@ -43,7 +55,6 @@ arguments when launching code-server with Docker. See
 - If you also plan on developing, set the `OUT` environment variable. Otherwise
   it will build in this directory which will cause issues because `yarn watch`
   will try to compile the build directory as well.
-- For now `@coder/nbin` is a global dependency.
 - Run `yarn build ${vscodeVersion} ${codeServerVersion}` in this directory (for
   example: `yarn build 1.36.0 development`).
 - If you target the same VS Code version our Travis builds do everything will
@@ -54,7 +65,6 @@ arguments when launching code-server with Docker. See
   code into a single binary.
 
 ## Known Issues
-- Uploading .vsix files doesn't work.
 - Creating custom VS Code extensions and debugging them doesn't work.
 - Extension profiling and tips are currently disabled.
 

doc/assets/droplet.svg

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="200px" height="40px" viewBox="0 0 200 40" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <!-- Generator: Sketch 52.5 (67469) - http://www.bohemiancoding.com/sketch -->
+    <title>do-btn-blue-ghost</title>
+    <desc>Created with Sketch.</desc>
+    <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
+        <g id="Partner-welcome-kit-Copy-3" transform="translate(-651.000000, -828.000000)">
+            <g id="do-btn-blue-ghost" transform="translate(651.000000, 828.000000)">
+                <rect id="Rectangle-Copy-4" stroke="#0069FF" x="0.5" y="0.5" width="199" height="39" rx="6"></rect>
+                <path d="M6,0 L47,0 L47,40 L6,40 C2.6862915,40 4.05812251e-16,37.3137085 0,34 L-8.8817842e-16,6 C-1.29399067e-15,2.6862915 2.6862915,6.08718376e-16 6,0 Z" id="Rectangle-Copy-5" fill="#0069FF"></path>
+                <g id="DO_Logo_horizontal_blue-Copy-3" transform="translate(13.000000, 10.000000)" fill="#FFFFFF">
+                    <path d="M10.0098493,20 L10.0098493,16.1262429 C14.12457,16.1262429 17.2897398,12.0548452 15.7269372,7.74627862 C15.1334679,6.14538921 13.8674,4.86072487 12.2650328,4.28756693 C7.952489,2.72620566 3.87733294,5.88845634 3.87733294,9.99938223 C3.87733294,9.99938223 3.87733294,9.99938223 3.87733294,9.99938223 L0,9.99938223 C0,3.45747613 6.3303395,-1.64165309 13.1948014,0.492866119 C16.2017127,1.42177726 18.57559,3.81322933 19.5053586,6.79760341 C21.6418482,13.6754986 16.5577943,20 10.0098493,20 Z" id="XMLID_49_"></path>
+                    <polygon id="XMLID_47_" points="9.52380952 16.1904762 5.71428571 16.1904762 5.71428571 12.3809524 5.71428571 12.3809524 9.52380952 12.3809524 9.52380952 12.3809524"></polygon>
+                    <polygon id="XMLID_46_" points="6.66666667 19.047619 3.80952381 19.047619 3.80952381 19.047619 3.80952381 16.1904762 6.66666667 16.1904762"></polygon>
+                    <polygon id="XMLID_45_" points="3.80952381 16.1904762 0.952380952 16.1904762 0.952380952 16.1904762 0.952380952 13.3333333 0.952380952 13.3333333 3.80952381 13.3333333 3.80952381 13.3333333"></polygon>
+                </g>
+                <!-- Modified to add GitHub font-family after DigitalOcean's font-family, otherwise it looks bad on GitHub -->
+                <text id="Create-a-Droplet-Copy-3" font-family="Sailec-Medium, Sailec, -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" font-size="16" font-weight="400" fill="#0069FF">
+                    <tspan x="58" y="26">Create a Droplet</tspan>
+                </text>
+            </g>
+        </g>
+    </g>
+</svg>

doc/quickstart.md

@@ -46,12 +46,66 @@ server {
   RewriteRule /(.*)           http://localhost:8080/$1 [P,L]
 
   ProxyRequests off
-
-  RequestHeader set X-Forwarded-Proto https
-  RequestHeader set X-Forwarded-Port 443
-
-  ProxyPass / http://localhost:8080/ nocanon
+  ProxyPass        / http://localhost:8080/ nocanon
   ProxyPassReverse / http://localhost:8080/
-
 </VirtualHost>
 ```
+
+### Run automatically at startup
+
+In some cases you might need to run code-server automatically once the host starts. You may use your local init service to do so.
+
+#### Systemd
+
+```ini
+[Unit]
+
+Description=VSCode in a browser
+
+After=network.target
+
+[Service]
+
+Type=simple
+
+ExecStart=/usr/bin/code-server $(pwd)
+
+WorkingDirectory=$HOME/projects
+
+ExecStop=/sbin/start-stop-daemon --stop -x /usr/bin/code-server
+
+Restart=on-failure
+
+User=1000
+
+[Install]
+
+WantedBy=multi-user.target
+```
+
+#### OpenRC
+
+```sh
+#!/sbin/openrc-run
+
+depend() {
+    after net-online
+    need net
+}
+
+supervisor=supervise-daemon
+name="code-server"
+command="/opt/cdr/code-server"
+command_args=""
+
+pidfile="/var/run/cdr.pid"
+respawn_delay=5
+
+set -o allexport
+if [ -f /etc/environment ]; then source /etc/environment; fi
+set +o allexport
+```
+
+#### Kubernetes/Docker
+
+Make sure you set your restart policy to always - this will ensure your container starts as the daemon starts.

package.json

@@ -14,7 +14,7 @@
     "patch:apply": "yarn ensure-in-vscode && cd ../../../ && git apply ./src/vs/server/scripts/vscode.patch"
   },
   "devDependencies": {
-    "@coder/nbin": "^1.2.0",
+    "@coder/nbin": "^1.2.2",
     "@types/pem": "^1.9.5",
     "@types/safe-compare": "^1.1.0",
     "@types/tar-fs": "^1.16.1",

scripts/vscode.patch

@@ -57,27 +57,27 @@ index 6bb695db68..ecbabe5dc8 100644
  }
 -
 diff --git a/src/vs/base/browser/mouseEvent.ts b/src/vs/base/browser/mouseEvent.ts
-index 4c7295e3b9..fc9694a18b 100644
+index 4c7295e3b9..b0af2cdd62 100644
 --- a/src/vs/base/browser/mouseEvent.ts
 +++ b/src/vs/base/browser/mouseEvent.ts
-@@ -158,7 +158,7 @@ export class StandardWheelEvent {
- 			// vertical delta scroll
- 			if (typeof e1.wheelDeltaY !== 'undefined') {
+@@ -160,6 +160,8 @@ export class StandardWheelEvent {
  				this.deltaY = e1.wheelDeltaY / 120;
--			} else if (typeof e2.VERTICAL_AXIS !== 'undefined' && e2.axis === e2.VERTICAL_AXIS) {
-+			} else if (browser.isFirefox || (typeof e2.VERTICAL_AXIS !== 'undefined' && e2.axis === e2.VERTICAL_AXIS)) {
+ 			} else if (typeof e2.VERTICAL_AXIS !== 'undefined' && e2.axis === e2.VERTICAL_AXIS) {
  				this.deltaY = -e2.detail / 3;
++			} else if (browser.isFirefox) {
++				this.deltaY = -e.deltaY / 3;
  			} else {
  				this.deltaY = -e.deltaY / 40;
-@@ -171,7 +171,7 @@ export class StandardWheelEvent {
- 				} else {
- 					this.deltaX = e1.wheelDeltaX / 120;
+ 			}
+@@ -173,6 +175,8 @@ export class StandardWheelEvent {
  				}
--			} else if (typeof e2.HORIZONTAL_AXIS !== 'undefined' && e2.axis === e2.HORIZONTAL_AXIS) {
-+			} else if (browser.isFirefox || (typeof e2.HORIZONTAL_AXIS !== 'undefined' && e2.axis === e2.HORIZONTAL_AXIS)) {
+ 			} else if (typeof e2.HORIZONTAL_AXIS !== 'undefined' && e2.axis === e2.HORIZONTAL_AXIS) {
  				this.deltaX = -e.detail / 3;
++			} else if (browser.isFirefox) {
++				this.deltaX = -e.deltaX / 3;
  			} else {
  				this.deltaX = -e.deltaX / 40;
+ 			}
 diff --git a/src/vs/base/common/network.ts b/src/vs/base/common/network.ts
 index 4f93e06df0..ae63e64a7f 100644
 --- a/src/vs/base/common/network.ts
@@ -1032,37 +1032,33 @@ index 7c3b6ae53e..18dec6effa 100644
  
  	get webviewResourceRoot(): string {
 diff --git a/src/vs/workbench/services/extensions/node/extensionHostProcessSetup.ts b/src/vs/workbench/services/extensions/node/extensionHostProcessSetup.ts
-index 6d31b177ac..a586ac7466 100644
+index 6d31b177ac..67c955a59d 100644
 --- a/src/vs/workbench/services/extensions/node/extensionHostProcessSetup.ts
 +++ b/src/vs/workbench/services/extensions/node/extensionHostProcessSetup.ts
-@@ -116,7 +116,7 @@ function _createExtHostProtocol(): Promise<IMessagePassingProtocol> {
- 						protocol.onClose(() => onTerminate());
- 						resolve(protocol);
+@@ -41,12 +41,12 @@ const args = minimist(process.argv.slice(2), {
+ 	const Module = require.__$__nodeRequire('module') as any;
+ 	const originalLoad = Module._load;
  
--						if (msg.skipWebSocketFrames) {
-+						// if (msg.skipWebSocketFrames) {
- 							// Wait for rich client to reconnect
+-	Module._load = function (request: string) {
++	Module._load = function (request: string, parent: object, isMain: boolean) {
+ 		if (request === 'natives') {
+ 			throw new Error('Either the extension or a NPM dependency is using the "natives" node module which is unsupported as it can cause a crash of the extension host. Click [here](https://go.microsoft.com/fwlink/?linkid=871887) to find out more');
+ 		}
+ 
+-		return originalLoad.apply(this, arguments);
++		return originalLoad.apply(this, [request.replace(/node_modules\.asar(\.unpacked)?/, 'node_modules'), parent, isMain]);
+ 	};
+ })();
+ 
+@@ -128,7 +128,7 @@ function _createExtHostProtocol(): Promise<IMessagePassingProtocol> {
+ 						} else {
+ 							// Do not wait for web companion to reconnect
  							protocol.onSocketClose(() => {
- 								// The socket has closed, let's give the renderer a certain amount of time to reconnect
-@@ -125,12 +125,12 @@ function _createExtHostProtocol(): Promise<IMessagePassingProtocol> {
- 									onTerminate();
- 								}, ProtocolConstants.ReconnectionGraceTime);
- 							});
--						} else {
--							// Do not wait for web companion to reconnect
--							protocol.onSocketClose(() => {
 -								onTerminate();
--							});
--						}
-+						// } else {
-+						// 	// Do not wait for web companion to reconnect
-+						// 	protocol.onSocketClose(() => {
-+						// 		onTerminate();
-+						// 	});
-+						// }
++								process.send!({ type: 'VSCODE_EXTHOST_DISCONNECTED' });
+ 							});
+ 						}
  					}
- 				}
- 			});
 diff --git a/src/vs/workbench/workbench.web.main.ts b/src/vs/workbench/workbench.web.main.ts
 index 681fc606b6..e34ef5d4bc 100644
 --- a/src/vs/workbench/workbench.web.main.ts

src/channel.ts

@@ -164,8 +164,8 @@ export class FileProviderChannel implements IServerChannel, IDisposable {
 
 	private transform(resource: UriComponents): URI {
 		// Used for walkthrough content.
-		if (resource.path.indexOf("/static") === 0) {
-			return URI.file(this.environmentService.appRoot + resource.path.replace(/^\/static/, ""));
+		if (/^\/static[^/]*\//.test(resource.path)) {
+			return URI.file(this.environmentService.appRoot + resource.path.replace(/^\/static[^/]*\//, "/"));
 		// Used by the webview service worker to load resources.
 		} else if (resource.path === "/vscode-resource" && resource.query) {
 			try {

src/cli.ts

@@ -120,7 +120,7 @@ const startVscode = async (): Promise<void | void[]> => {
 
 	const server = new MainServer({
 		...options,
-		port: typeof args.port !== "undefined" && parseInt(args.port, 10) || 8080,
+		port: typeof args.port !== "undefined" ? parseInt(args.port, 10) : 8080,
 		socket: args.socket,
 	}, args);
 
@@ -151,7 +151,7 @@ const startVscode = async (): Promise<void | void[]> => {
 
 	if (!server.options.socket && args.open) {
 		// The web socket doesn't seem to work if browsing with 0.0.0.0.
-		const openAddress = `http://localhost:${server.options.port}`;
+		const openAddress = serverAddress.replace(/:\/\/0.0.0.0/, "://localhost");
 		await open(openAddress).catch(console.error);
 		logger.info(`  - Opened ${openAddress}`);
 	}

src/connection.ts

@@ -17,10 +17,7 @@ export abstract class Connection {
 	private disposed = false;
 	private _offline: number | undefined;
 
-	public constructor(protected protocol: Protocol) {
-		protocol.onClose(() => this.dispose()); // Explicit close.
-		protocol.onSocketClose(() => this._offline = Date.now()); // Might reconnect.
-	}
+	public constructor(protected protocol: Protocol, public readonly token: string) {}
 
 	public get offline(): number | undefined {
 		return this._offline;
@@ -39,6 +36,12 @@ export abstract class Connection {
 		}
 	}
 
+	protected setOffline(): void {
+		if (!this._offline) {
+			this._offline = Date.now();
+		}
+	}
+
 	/**
 	 * Set up the connection on a new socket.
 	 */
@@ -50,6 +53,12 @@ export abstract class Connection {
  * Used for all the IPC channels.
  */
 export class ManagementConnection extends Connection {
+	public constructor(protected protocol: Protocol, token: string) {
+		super(protocol, token);
+		protocol.onClose(() => this.dispose()); // Explicit close.
+		protocol.onSocketClose(() => this.setOffline()); // Might reconnect.
+	}
+
 	protected doDispose(): void {
 		this.protocol.sendDisconnect();
 		this.protocol.dispose();
@@ -66,11 +75,11 @@ export class ExtensionHostConnection extends Connection {
 	private process?: cp.ChildProcess;
 
 	public constructor(
-		locale:string, protocol: Protocol, buffer: VSBuffer,
+		locale:string, protocol: Protocol, buffer: VSBuffer, token: string,
 		private readonly log: ILogService,
 		private readonly environment: IEnvironmentService,
 	) {
-		super(protocol);
+		super(protocol, token);
 		this.protocol.dispose();
 		this.spawn(locale, buffer).then((p) => this.process = p);
 		this.protocol.getUnderlyingSocket().pause();
@@ -129,6 +138,9 @@ export class ExtensionHostConnection extends Connection {
 				const severity = (<any>this.log)[event.severity] ? event.severity : "info";
 				(<any>this.log)[severity]("Extension host", event.arguments);
 			}
+			if (event && event.type === "VSCODE_EXTHOST_DISCONNECTED") {
+				this.setOffline();
+			}
 		});
 
 		const listen = (message: IExtHostReadyMessage) => {

src/server.ts

@@ -279,7 +279,7 @@ export abstract class Server {
 		// without adding query parameters which have their own issues.
 		// REVIEW: Discuss whether this is the best option; this is sort of a quick
 		// hack almost to get caching in the meantime but it does work pretty well.
-		if (/static-.+/.test(base)) {
+		if (/^\/static-.+/.test(base)) {
 			base = "/static";
 		}
 
@@ -331,7 +331,7 @@ export abstract class Server {
 		this.ensureGet(request);
 		if (!this.authenticate(request)) {
 			throw new HttpError("Unauthorized", HttpCode.Unauthorized);
-		} else if (request.headers.upgrade !== "websocket") {
+		} else if (!request.headers.upgrade || request.headers.upgrade.toLowerCase() !== "websocket") {
 			throw new Error("HTTP/1.1 400 Bad Request");
 		}
 
@@ -449,7 +449,7 @@ export class MainServer extends Server {
 	public readonly onDidClientConnect = this._onDidClientConnect.event;
 	private readonly ipc = new IPCServer(this.onDidClientConnect);
 
-	private readonly maxOfflineConnections = 5;
+	private readonly maxExtraOfflineConnections = 0;
 	private readonly connections = new Map<ConnectionType, Map<string, Connection>>();
 
 	private readonly services = new ServiceCollection();
@@ -601,7 +601,7 @@ export class MainServer extends Server {
 
 				let connection: Connection;
 				if (message.desiredConnectionType === ConnectionType.Management) {
-					connection = new ManagementConnection(protocol);
+					connection = new ManagementConnection(protocol, token);
 					this._onDidClientConnect.fire({
 						protocol, onDidClientDisconnect: connection.onClose,
 					});
@@ -609,28 +609,26 @@ export class MainServer extends Server {
 					const buffer = protocol.readEntireBuffer();
 					connection = new ExtensionHostConnection(
 						message.args ? message.args.language : "en",
-						protocol, buffer,
+						protocol, buffer, token,
 						this.services.get(ILogService) as ILogService,
 						this.services.get(IEnvironmentService) as IEnvironmentService,
 					);
 				}
 				connections.set(token, connection);
-				this.disposeOldOfflineConnections();
 				connection.onClose(() => connections.delete(token));
+				this.disposeOldOfflineConnections(connections);
 				break;
 			case ConnectionType.Tunnel: return protocol.tunnel();
 			default: throw new Error("Unrecognized connection type");
 		}
 	}
 
-	private disposeOldOfflineConnections(): void {
-		this.connections.forEach((connections) => {
-			const offline = Array.from(connections.values())
-				.filter((connection) => typeof connection.offline !== "undefined");
-			for (let i = 0, max = offline.length - this.maxOfflineConnections; i < max; ++i) {
-				offline[i].dispose();
-			}
-		});
+	private disposeOldOfflineConnections(connections: Map<string, Connection>): void {
+		const offline = Array.from(connections.values())
+			.filter((connection) => typeof connection.offline !== "undefined");
+		for (let i = 0, max = offline.length - this.maxExtraOfflineConnections; i < max; ++i) {
+			offline[i].dispose();
+		}
 	}
 
 	private async initializeServices(args: ParsedArgs): Promise<void> {

yarn.lock

@@ -7,10 +7,10 @@
   resolved "https://registry.yarnpkg.com/@coder/logger/-/logger-1.1.8.tgz#416a7221d84161ee35eca9cfa93ba9377639b4ee"
   integrity sha512-NJDC4rZTx0deVYqAxZtJWACq3IrVR59BjFeZebO3i7OfTZZMkkbLsGsCFMnJd5KnX6KjnvvFq4XXtwJ9yf8/YQ==
 
-"@coder/nbin@^1.2.0":
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/@coder/nbin/-/nbin-1.2.0.tgz#b1cc5ed51193ded98ccfe39825ceee500b90f849"
-  integrity sha512-fHnOqx1yAuK65gr1D9Du7W4AXiITEcFPKIZ3JifvXMeSSwzdVzq3nvVSCPD45KTwK1nS6pDKkXC/CqrYinUf7Q==
+"@coder/nbin@^1.2.2":
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/@coder/nbin/-/nbin-1.2.2.tgz#c5f9aaa2a0e84c2a13a4cce895547efbd66730b7"
+  integrity sha512-1Z6aYBRZRY1AQ2xp0jmoz+TXR8M4WaHa9FfVkOPej0KPJjYtEp18I+/6CmffDtBLxSnIai0rc+AA0VhbjCN/rg==
   dependencies:
     "@coder/logger" "^1.1.8"
     fs-extra "^7.0.1"