Leave the local extension host running when connection is lost to the remote extension host

extensions/vscode-test-resolver/src/extension.ts

@@ -229,6 +229,9 @@ export function activate(context: vscode.ExtensionContext) {
 		}
 		vscode.workspace.registerRemoteAuthorityResolver('test', {
 			async resolve(_authority: string): Promise<vscode.ResolvedAuthority> {
+				setTimeout(async () => {
+					await vscode.window.showErrorMessage('Just a custom message.', { modal: true, useCustom: true }, 'OK', 'Great');
+				}, 2000);
 				throw vscode.RemoteAuthorityResolverError.NotAvailable('Intentional Error', true);
 			}
 		});

src/vs/workbench/services/extensions/common/abstractExtensionService.ts

@@ -464,7 +464,9 @@ export abstract class AbstractExtensionService extends Disposable implements IEx
 
 	protected _onExtensionHostCrashed(extensionHost: ExtensionHostManager, code: number, signal: string | null): void {
 		console.error('Extension host terminated unexpectedly. Code: ', code, ' Signal: ', signal);
-		this._stopExtensionHosts();
+		if (extensionHost.kind === ExtensionHostKind.LocalProcess) {
+			this._stopExtensionHosts();
+		}
 	}
 
 	//#region IExtensionService

src/vs/workbench/services/extensions/common/remoteExtensionHost.ts

@@ -57,6 +57,7 @@ export class RemoteExtensionHost extends Disposable implements IExtensionHost {
 	public readonly onExit: Event<[number, string | null]> = this._onExit.event;
 
 	private _protocol: PersistentProtocol | null;
+	private _hasLostConnection: boolean;
 	private _terminating: boolean;
 	private readonly _isExtensionDevHost: boolean;
 
@@ -77,6 +78,7 @@ export class RemoteExtensionHost extends Disposable implements IExtensionHost {
 		super();
 		this.remoteAuthority = this._initDataProvider.remoteAuthority;
 		this._protocol = null;
+		this._hasLostConnection = false;
 		this._terminating = false;
 
 		this._register(this._lifecycleService.onShutdown(reason => this.dispose()));
@@ -188,6 +190,11 @@ export class RemoteExtensionHost extends Disposable implements IExtensionHost {
 	}
 
 	private _onExtHostConnectionLost(): void {
+		if (this._hasLostConnection) {
+			// avoid re-entering this method
+			return;
+		}
+		this._hasLostConnection = true;
 
 		if (this._isExtensionDevHost && this._environmentService.debugExtensionHost.debugId) {
 			this._extensionHostDebugService.close(this._environmentService.debugExtensionHost.debugId);