refactor: heartbeat patch (#5545)

patches/heartbeat.diff

@@ -1,37 +0,0 @@
-Add a heartbeat to web socket connections
-
-This prevents them from being killed when they are idle.  To test run behind
-NGINX, make sure the sockets are idle (check dev tools), then wait 60+ seconds.
-
-Index: code-server/lib/vscode/src/vs/base/parts/ipc/common/ipc.net.ts
-===================================================================
---- code-server.orig/lib/vscode/src/vs/base/parts/ipc/common/ipc.net.ts
-+++ code-server/lib/vscode/src/vs/base/parts/ipc/common/ipc.net.ts
-@@ -7,6 +7,7 @@ import { VSBuffer } from 'vs/base/common
- import { Emitter, Event } from 'vs/base/common/event';
- import { Disposable, dispose, IDisposable } from 'vs/base/common/lifecycle';
- import { IIPCLogger, IMessagePassingProtocol, IPCClient } from 'vs/base/parts/ipc/common/ipc';
-+import { isWeb } from 'vs/base/common/platform';
- 
- export const enum SocketDiagnosticsEventType {
- 	Created = 'created',
-@@ -849,6 +850,19 @@ export class PersistentProtocol implemen
- 		this._socketDisposables.push(this._socketWriter);
- 		this._socketReader = new ProtocolReader(this._socket);
- 		this._socketDisposables.push(this._socketReader);
-+		// Send empty messages to keep the socket alive.  We only need this on the
-+		// web where sockets can be killed by reverse proxies for inactivity.
-+		if (isWeb) {
-+			const timer = setInterval(() => {
-+				const msg = new ProtocolMessage(ProtocolMessageType.None, 0, 0, getEmptyBuffer());
-+				this._socketWriter.write(msg);
-+			}, 45000); // NGINX has a 60 second default timeout so try 45 seconds.
-+			this._socketDisposables.push({
-+				dispose: () => {
-+					clearInterval(timer);
-+				},
-+			});
-+		}
- 		this._socketDisposables.push(this._socketReader.onMessage(msg => this._receiveMessage(msg)));
- 		this._socketDisposables.push(this._socket.onClose((e) => this._onSocketClose.fire(e)));
- 		if (initialChunk) {

patches/series

@@ -20,6 +20,5 @@ disable-downloads.diff
 telemetry.diff
 display-language.diff
 cli-window-open.diff
-heartbeat.diff
 exec-argv.diff
 safari-console.diff