mirror of
https://github.com/coder/code-server.git
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Merge commit 'be3e8236086165e5e45a5a10783823874b3f3ebd' as 'lib/vscode'
This commit is contained in:
Joe Previte
@@ -0,0 +1,584 @@
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/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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import { Client, PersistentProtocol, ISocket, ProtocolConstants } from 'vs/base/parts/ipc/common/ipc.net';
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import { generateUuid } from 'vs/base/common/uuid';
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import { RemoteAgentConnectionContext } from 'vs/platform/remote/common/remoteAgentEnvironment';
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import { Disposable } from 'vs/base/common/lifecycle';
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import { VSBuffer } from 'vs/base/common/buffer';
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import { Emitter } from 'vs/base/common/event';
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import { RemoteAuthorityResolverError } from 'vs/platform/remote/common/remoteAuthorityResolver';
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import { isPromiseCanceledError, onUnexpectedError } from 'vs/base/common/errors';
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import { ISignService } from 'vs/platform/sign/common/sign';
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import { CancelablePromise, createCancelablePromise } from 'vs/base/common/async';
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import { ILogService } from 'vs/platform/log/common/log';
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import { IIPCLogger } from 'vs/base/parts/ipc/common/ipc';
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const INITIAL_CONNECT_TIMEOUT = 120 * 1000 /* 120s */;
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const RECONNECT_TIMEOUT = 30 * 1000 /* 30s */;
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export const enum ConnectionType {
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Management = 1,
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ExtensionHost = 2,
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Tunnel = 3,
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}
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function connectionTypeToString(connectionType: ConnectionType): string {
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switch (connectionType) {
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case ConnectionType.Management:
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return 'Management';
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case ConnectionType.ExtensionHost:
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return 'ExtensionHost';
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case ConnectionType.Tunnel:
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return 'Tunnel';
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}
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}
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export interface AuthRequest {
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type: 'auth';
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auth: string;
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}
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export interface SignRequest {
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type: 'sign';
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data: string;
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}
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export interface ConnectionTypeRequest {
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type: 'connectionType';
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commit?: string;
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signedData?: string;
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desiredConnectionType?: ConnectionType;
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args?: any;
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}
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export interface ErrorMessage {
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type: 'error';
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reason: string;
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}
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export interface OKMessage {
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type: 'ok';
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}
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export type HandshakeMessage = AuthRequest | SignRequest | ConnectionTypeRequest | ErrorMessage | OKMessage;
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interface ISimpleConnectionOptions {
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commit: string | undefined;
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host: string;
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port: number;
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connectionToken: string | undefined;
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reconnectionToken: string;
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reconnectionProtocol: PersistentProtocol | null;
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socketFactory: ISocketFactory;
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signService: ISignService;
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logService: ILogService;
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}
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export interface IConnectCallback {
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(err: any | undefined, socket: ISocket | undefined): void;
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}
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export interface ISocketFactory {
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connect(host: string, port: number, query: string, callback: IConnectCallback): void;
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}
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async function connectToRemoteExtensionHostAgent(options: ISimpleConnectionOptions, connectionType: ConnectionType, args: any | undefined): Promise<{ protocol: PersistentProtocol; ownsProtocol: boolean; }> {
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const logPrefix = connectLogPrefix(options, connectionType);
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const { protocol, ownsProtocol } = await new Promise<{ protocol: PersistentProtocol; ownsProtocol: boolean; }>((c, e) => {
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options.logService.trace(`${logPrefix} 1/6. invoking socketFactory.connect().`);
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options.socketFactory.connect(
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options.host,
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options.port,
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`reconnectionToken=${options.reconnectionToken}&reconnection=${options.reconnectionProtocol ? 'true' : 'false'}`,
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(err: any, socket: ISocket | undefined) => {
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if (err || !socket) {
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options.logService.error(`${logPrefix} socketFactory.connect() failed. Error:`);
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options.logService.error(err);
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e(err);
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return;
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}
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options.logService.trace(`${logPrefix} 2/6. socketFactory.connect() was successful.`);
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if (options.reconnectionProtocol) {
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options.reconnectionProtocol.beginAcceptReconnection(socket, null);
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c({ protocol: options.reconnectionProtocol, ownsProtocol: false });
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} else {
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c({ protocol: new PersistentProtocol(socket, null), ownsProtocol: true });
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}
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}
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);
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});
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return new Promise<{ protocol: PersistentProtocol; ownsProtocol: boolean; }>((c, e) => {
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const errorTimeoutToken = setTimeout(() => {
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const error: any = new Error('handshake timeout');
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error.code = 'ETIMEDOUT';
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error.syscall = 'connect';
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options.logService.error(`${logPrefix} the handshake took longer than 10 seconds. Error:`);
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options.logService.error(error);
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if (ownsProtocol) {
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safeDisposeProtocolAndSocket(protocol);
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}
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e(error);
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}, 10000);
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const messageRegistration = protocol.onControlMessage(async raw => {
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const msg = <HandshakeMessage>JSON.parse(raw.toString());
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// Stop listening for further events
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messageRegistration.dispose();
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const error = getErrorFromMessage(msg);
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if (error) {
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options.logService.error(`${logPrefix} received error control message when negotiating connection. Error:`);
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options.logService.error(error);
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if (ownsProtocol) {
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safeDisposeProtocolAndSocket(protocol);
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}
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return e(error);
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}
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if (msg.type === 'sign') {
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options.logService.trace(`${logPrefix} 4/6. received SignRequest control message.`);
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const signed = await options.signService.sign(msg.data);
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const connTypeRequest: ConnectionTypeRequest = {
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type: 'connectionType',
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commit: options.commit,
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signedData: signed,
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desiredConnectionType: connectionType
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};
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if (args) {
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connTypeRequest.args = args;
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}
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options.logService.trace(`${logPrefix} 5/6. sending ConnectionTypeRequest control message.`);
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protocol.sendControl(VSBuffer.fromString(JSON.stringify(connTypeRequest)));
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clearTimeout(errorTimeoutToken);
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c({ protocol, ownsProtocol });
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} else {
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const error = new Error('handshake error');
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options.logService.error(`${logPrefix} received unexpected control message. Error:`);
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options.logService.error(error);
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if (ownsProtocol) {
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safeDisposeProtocolAndSocket(protocol);
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}
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e(error);
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}
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});
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options.logService.trace(`${logPrefix} 3/6. sending AuthRequest control message.`);
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const authRequest: AuthRequest = {
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type: 'auth',
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auth: options.connectionToken || '00000000000000000000'
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};
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protocol.sendControl(VSBuffer.fromString(JSON.stringify(authRequest)));
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});
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}
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interface IManagementConnectionResult {
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protocol: PersistentProtocol;
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}
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async function connectToRemoteExtensionHostAgentAndReadOneMessage(options: ISimpleConnectionOptions, connectionType: ConnectionType, args: any | undefined): Promise<{ protocol: PersistentProtocol; firstMessage: any }> {
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const startTime = Date.now();
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const logPrefix = connectLogPrefix(options, connectionType);
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const { protocol, ownsProtocol } = await connectToRemoteExtensionHostAgent(options, connectionType, args);
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return new Promise<{ protocol: PersistentProtocol; firstMessage: any }>((c, e) => {
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const registration = protocol.onControlMessage(raw => {
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registration.dispose();
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const msg = JSON.parse(raw.toString());
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const error = getErrorFromMessage(msg);
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if (error) {
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options.logService.error(`${logPrefix} received error control message when negotiating connection. Error:`);
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options.logService.error(error);
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if (ownsProtocol) {
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safeDisposeProtocolAndSocket(protocol);
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}
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return e(error);
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}
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if (options.reconnectionProtocol) {
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options.reconnectionProtocol.endAcceptReconnection();
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}
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options.logService.trace(`${logPrefix} 6/6. handshake finished, connection is up and running after ${logElapsed(startTime)}!`);
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c({ protocol, firstMessage: msg });
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});
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});
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}
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async function doConnectRemoteAgentManagement(options: ISimpleConnectionOptions): Promise<IManagementConnectionResult> {
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const { protocol } = await connectToRemoteExtensionHostAgentAndReadOneMessage(options, ConnectionType.Management, undefined);
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return { protocol };
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}
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export interface IRemoteExtensionHostStartParams {
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language: string;
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debugId?: string;
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break?: boolean;
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port?: number | null;
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env?: { [key: string]: string | null };
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}
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interface IExtensionHostConnectionResult {
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protocol: PersistentProtocol;
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debugPort?: number;
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}
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async function doConnectRemoteAgentExtensionHost(options: ISimpleConnectionOptions, startArguments: IRemoteExtensionHostStartParams): Promise<IExtensionHostConnectionResult> {
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const { protocol, firstMessage } = await connectToRemoteExtensionHostAgentAndReadOneMessage(options, ConnectionType.ExtensionHost, startArguments);
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const debugPort = firstMessage && firstMessage.debugPort;
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return { protocol, debugPort };
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}
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export interface ITunnelConnectionStartParams {
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port: number;
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}
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async function doConnectRemoteAgentTunnel(options: ISimpleConnectionOptions, startParams: ITunnelConnectionStartParams): Promise<PersistentProtocol> {
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const startTime = Date.now();
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const logPrefix = connectLogPrefix(options, ConnectionType.Tunnel);
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const { protocol } = await connectToRemoteExtensionHostAgent(options, ConnectionType.Tunnel, startParams);
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options.logService.trace(`${logPrefix} 6/6. handshake finished, connection is up and running after ${logElapsed(startTime)}!`);
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return protocol;
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}
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export interface IConnectionOptions {
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commit: string | undefined;
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socketFactory: ISocketFactory;
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addressProvider: IAddressProvider;
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signService: ISignService;
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logService: ILogService;
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ipcLogger: IIPCLogger | null;
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}
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async function resolveConnectionOptions(options: IConnectionOptions, reconnectionToken: string, reconnectionProtocol: PersistentProtocol | null): Promise<ISimpleConnectionOptions> {
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const { host, port, connectionToken } = await options.addressProvider.getAddress();
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return {
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commit: options.commit,
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host: host,
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port: port,
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connectionToken: connectionToken,
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reconnectionToken: reconnectionToken,
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reconnectionProtocol: reconnectionProtocol,
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socketFactory: options.socketFactory,
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signService: options.signService,
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logService: options.logService
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};
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}
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export interface IAddress {
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host: string;
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port: number;
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connectionToken: string | undefined;
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}
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export interface IAddressProvider {
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getAddress(): Promise<IAddress>;
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}
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export async function connectRemoteAgentManagement(options: IConnectionOptions, remoteAuthority: string, clientId: string): Promise<ManagementPersistentConnection> {
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try {
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const reconnectionToken = generateUuid();
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const simpleOptions = await resolveConnectionOptions(options, reconnectionToken, null);
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const { protocol } = await connectWithTimeLimit(simpleOptions.logService, doConnectRemoteAgentManagement(simpleOptions), INITIAL_CONNECT_TIMEOUT);
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return new ManagementPersistentConnection(options, remoteAuthority, clientId, reconnectionToken, protocol);
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} catch (err) {
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options.logService.error(`[remote-connection] An error occurred in the very first connect attempt, it will be treated as a permanent error! Error:`);
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options.logService.error(err);
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PersistentConnection.triggerPermanentFailure();
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throw err;
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}
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}
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export async function connectRemoteAgentExtensionHost(options: IConnectionOptions, startArguments: IRemoteExtensionHostStartParams): Promise<ExtensionHostPersistentConnection> {
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try {
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const reconnectionToken = generateUuid();
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const simpleOptions = await resolveConnectionOptions(options, reconnectionToken, null);
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const { protocol, debugPort } = await connectWithTimeLimit(simpleOptions.logService, doConnectRemoteAgentExtensionHost(simpleOptions, startArguments), INITIAL_CONNECT_TIMEOUT);
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return new ExtensionHostPersistentConnection(options, startArguments, reconnectionToken, protocol, debugPort);
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} catch (err) {
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options.logService.error(`[remote-connection] An error occurred in the very first connect attempt, it will be treated as a permanent error! Error:`);
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options.logService.error(err);
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PersistentConnection.triggerPermanentFailure();
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throw err;
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}
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}
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export async function connectRemoteAgentTunnel(options: IConnectionOptions, tunnelRemotePort: number): Promise<PersistentProtocol> {
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const simpleOptions = await resolveConnectionOptions(options, generateUuid(), null);
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const protocol = await connectWithTimeLimit(simpleOptions.logService, doConnectRemoteAgentTunnel(simpleOptions, { port: tunnelRemotePort }), INITIAL_CONNECT_TIMEOUT);
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return protocol;
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}
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function sleep(seconds: number): CancelablePromise<void> {
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return createCancelablePromise(token => {
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return new Promise((resolve, reject) => {
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const timeout = setTimeout(resolve, seconds * 1000);
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||||
token.onCancellationRequested(() => {
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clearTimeout(timeout);
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resolve();
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||||
});
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||||
});
|
||||
});
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}
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export const enum PersistentConnectionEventType {
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ConnectionLost,
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ReconnectionWait,
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ReconnectionRunning,
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ReconnectionPermanentFailure,
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ConnectionGain
|
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}
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export class ConnectionLostEvent {
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public readonly type = PersistentConnectionEventType.ConnectionLost;
|
||||
}
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export class ReconnectionWaitEvent {
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||||
public readonly type = PersistentConnectionEventType.ReconnectionWait;
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constructor(
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public readonly durationSeconds: number,
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private readonly cancellableTimer: CancelablePromise<void>
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||||
) { }
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||||
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||||
public skipWait(): void {
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this.cancellableTimer.cancel();
|
||||
}
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||||
}
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||||
export class ReconnectionRunningEvent {
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||||
public readonly type = PersistentConnectionEventType.ReconnectionRunning;
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||||
}
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export class ConnectionGainEvent {
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||||
public readonly type = PersistentConnectionEventType.ConnectionGain;
|
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}
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export class ReconnectionPermanentFailureEvent {
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||||
public readonly type = PersistentConnectionEventType.ReconnectionPermanentFailure;
|
||||
}
|
||||
export type PersistentConnectionEvent = ConnectionGainEvent | ConnectionLostEvent | ReconnectionWaitEvent | ReconnectionRunningEvent | ReconnectionPermanentFailureEvent;
|
||||
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||||
abstract class PersistentConnection extends Disposable {
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||||
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||||
public static triggerPermanentFailure(): void {
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||||
this._permanentFailure = true;
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this._instances.forEach(instance => instance._gotoPermanentFailure());
|
||||
}
|
||||
private static _permanentFailure: boolean = false;
|
||||
private static _instances: PersistentConnection[] = [];
|
||||
|
||||
private readonly _onDidStateChange = this._register(new Emitter<PersistentConnectionEvent>());
|
||||
public readonly onDidStateChange = this._onDidStateChange.event;
|
||||
|
||||
protected readonly _options: IConnectionOptions;
|
||||
public readonly reconnectionToken: string;
|
||||
public readonly protocol: PersistentProtocol;
|
||||
|
||||
private _isReconnecting: boolean;
|
||||
|
||||
constructor(private readonly _connectionType: ConnectionType, options: IConnectionOptions, reconnectionToken: string, protocol: PersistentProtocol) {
|
||||
super();
|
||||
this._options = options;
|
||||
this.reconnectionToken = reconnectionToken;
|
||||
this.protocol = protocol;
|
||||
this._isReconnecting = false;
|
||||
|
||||
this._onDidStateChange.fire(new ConnectionGainEvent());
|
||||
|
||||
this._register(protocol.onSocketClose(() => this._beginReconnecting()));
|
||||
this._register(protocol.onSocketTimeout(() => this._beginReconnecting()));
|
||||
|
||||
PersistentConnection._instances.push(this);
|
||||
|
||||
if (PersistentConnection._permanentFailure) {
|
||||
this._gotoPermanentFailure();
|
||||
}
|
||||
}
|
||||
|
||||
private async _beginReconnecting(): Promise<void> {
|
||||
// Only have one reconnection loop active at a time.
|
||||
if (this._isReconnecting) {
|
||||
return;
|
||||
}
|
||||
try {
|
||||
this._isReconnecting = true;
|
||||
await this._runReconnectingLoop();
|
||||
} finally {
|
||||
this._isReconnecting = false;
|
||||
}
|
||||
}
|
||||
|
||||
private async _runReconnectingLoop(): Promise<void> {
|
||||
if (PersistentConnection._permanentFailure) {
|
||||
// no more attempts!
|
||||
return;
|
||||
}
|
||||
const logPrefix = commonLogPrefix(this._connectionType, this.reconnectionToken, true);
|
||||
this._options.logService.info(`${logPrefix} starting reconnecting loop. You can get more information with the trace log level.`);
|
||||
this._onDidStateChange.fire(new ConnectionLostEvent());
|
||||
const TIMES = [5, 5, 10, 10, 10, 10, 10, 30];
|
||||
const disconnectStartTime = Date.now();
|
||||
let attempt = -1;
|
||||
do {
|
||||
attempt++;
|
||||
const waitTime = (attempt < TIMES.length ? TIMES[attempt] : TIMES[TIMES.length - 1]);
|
||||
try {
|
||||
const sleepPromise = sleep(waitTime);
|
||||
this._onDidStateChange.fire(new ReconnectionWaitEvent(waitTime, sleepPromise));
|
||||
|
||||
this._options.logService.info(`${logPrefix} waiting for ${waitTime} seconds before reconnecting...`);
|
||||
try {
|
||||
await sleepPromise;
|
||||
} catch { } // User canceled timer
|
||||
|
||||
if (PersistentConnection._permanentFailure) {
|
||||
this._options.logService.error(`${logPrefix} permanent failure occurred while running the reconnecting loop.`);
|
||||
break;
|
||||
}
|
||||
|
||||
// connection was lost, let's try to re-establish it
|
||||
this._onDidStateChange.fire(new ReconnectionRunningEvent());
|
||||
this._options.logService.info(`${logPrefix} resolving connection...`);
|
||||
const simpleOptions = await resolveConnectionOptions(this._options, this.reconnectionToken, this.protocol);
|
||||
this._options.logService.info(`${logPrefix} connecting to ${simpleOptions.host}:${simpleOptions.port}...`);
|
||||
await connectWithTimeLimit(simpleOptions.logService, this._reconnect(simpleOptions), RECONNECT_TIMEOUT);
|
||||
this._options.logService.info(`${logPrefix} reconnected!`);
|
||||
this._onDidStateChange.fire(new ConnectionGainEvent());
|
||||
|
||||
break;
|
||||
} catch (err) {
|
||||
if (err.code === 'VSCODE_CONNECTION_ERROR') {
|
||||
this._options.logService.error(`${logPrefix} A permanent error occurred in the reconnecting loop! Will give up now! Error:`);
|
||||
this._options.logService.error(err);
|
||||
PersistentConnection.triggerPermanentFailure();
|
||||
break;
|
||||
}
|
||||
if (Date.now() - disconnectStartTime > ProtocolConstants.ReconnectionGraceTime) {
|
||||
this._options.logService.error(`${logPrefix} An error occurred while reconnecting, but it will be treated as a permanent error because the reconnection grace time has expired! Will give up now! Error:`);
|
||||
this._options.logService.error(err);
|
||||
PersistentConnection.triggerPermanentFailure();
|
||||
break;
|
||||
}
|
||||
if (RemoteAuthorityResolverError.isTemporarilyNotAvailable(err)) {
|
||||
this._options.logService.info(`${logPrefix} A temporarily not available error occurred while trying to reconnect, will try again...`);
|
||||
this._options.logService.trace(err);
|
||||
// try again!
|
||||
continue;
|
||||
}
|
||||
if ((err.code === 'ETIMEDOUT' || err.code === 'ENETUNREACH' || err.code === 'ECONNREFUSED' || err.code === 'ECONNRESET') && err.syscall === 'connect') {
|
||||
this._options.logService.info(`${logPrefix} A network error occurred while trying to reconnect, will try again...`);
|
||||
this._options.logService.trace(err);
|
||||
// try again!
|
||||
continue;
|
||||
}
|
||||
if (isPromiseCanceledError(err)) {
|
||||
this._options.logService.info(`${logPrefix} A promise cancelation error occurred while trying to reconnect, will try again...`);
|
||||
this._options.logService.trace(err);
|
||||
// try again!
|
||||
continue;
|
||||
}
|
||||
this._options.logService.error(`${logPrefix} An unknown error occurred while trying to reconnect, since this is an unknown case, it will be treated as a permanent error! Will give up now! Error:`);
|
||||
this._options.logService.error(err);
|
||||
PersistentConnection.triggerPermanentFailure();
|
||||
break;
|
||||
}
|
||||
} while (!PersistentConnection._permanentFailure);
|
||||
}
|
||||
|
||||
private _gotoPermanentFailure(): void {
|
||||
this._onDidStateChange.fire(new ReconnectionPermanentFailureEvent());
|
||||
safeDisposeProtocolAndSocket(this.protocol);
|
||||
}
|
||||
|
||||
protected abstract _reconnect(options: ISimpleConnectionOptions): Promise<void>;
|
||||
}
|
||||
|
||||
export class ManagementPersistentConnection extends PersistentConnection {
|
||||
|
||||
public readonly client: Client<RemoteAgentConnectionContext>;
|
||||
|
||||
constructor(options: IConnectionOptions, remoteAuthority: string, clientId: string, reconnectionToken: string, protocol: PersistentProtocol) {
|
||||
super(ConnectionType.Management, options, reconnectionToken, protocol);
|
||||
this.client = this._register(new Client<RemoteAgentConnectionContext>(protocol, {
|
||||
remoteAuthority: remoteAuthority,
|
||||
clientId: clientId
|
||||
}, options.ipcLogger));
|
||||
}
|
||||
|
||||
protected async _reconnect(options: ISimpleConnectionOptions): Promise<void> {
|
||||
await doConnectRemoteAgentManagement(options);
|
||||
}
|
||||
}
|
||||
|
||||
export class ExtensionHostPersistentConnection extends PersistentConnection {
|
||||
|
||||
private readonly _startArguments: IRemoteExtensionHostStartParams;
|
||||
public readonly debugPort: number | undefined;
|
||||
|
||||
constructor(options: IConnectionOptions, startArguments: IRemoteExtensionHostStartParams, reconnectionToken: string, protocol: PersistentProtocol, debugPort: number | undefined) {
|
||||
super(ConnectionType.ExtensionHost, options, reconnectionToken, protocol);
|
||||
this._startArguments = startArguments;
|
||||
this.debugPort = debugPort;
|
||||
}
|
||||
|
||||
protected async _reconnect(options: ISimpleConnectionOptions): Promise<void> {
|
||||
await doConnectRemoteAgentExtensionHost(options, this._startArguments);
|
||||
}
|
||||
}
|
||||
|
||||
function connectWithTimeLimit<T>(logService: ILogService, p: Promise<T>, timeLimit: number): Promise<T> {
|
||||
return new Promise<T>((resolve, reject) => {
|
||||
let timeout = setTimeout(() => {
|
||||
const err: any = new Error('Time limit reached');
|
||||
err.code = 'ETIMEDOUT';
|
||||
err.syscall = 'connect';
|
||||
logService.error(`[remote-connection] The time limit has been reached for a connection. Error:`);
|
||||
logService.error(err);
|
||||
reject(err);
|
||||
}, timeLimit);
|
||||
p.then((value) => {
|
||||
clearTimeout(timeout);
|
||||
resolve(value);
|
||||
}, (err) => {
|
||||
clearTimeout(timeout);
|
||||
reject(err);
|
||||
});
|
||||
});
|
||||
}
|
||||
|
||||
function safeDisposeProtocolAndSocket(protocol: PersistentProtocol): void {
|
||||
try {
|
||||
protocol.acceptDisconnect();
|
||||
const socket = protocol.getSocket();
|
||||
protocol.dispose();
|
||||
socket.dispose();
|
||||
} catch (err) {
|
||||
onUnexpectedError(err);
|
||||
}
|
||||
}
|
||||
|
||||
function getErrorFromMessage(msg: any): Error | null {
|
||||
if (msg && msg.type === 'error') {
|
||||
const error = new Error(`Connection error: ${msg.reason}`);
|
||||
(<any>error).code = 'VSCODE_CONNECTION_ERROR';
|
||||
return error;
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
function stringRightPad(str: string, len: number): string {
|
||||
while (str.length < len) {
|
||||
str += ' ';
|
||||
}
|
||||
return str;
|
||||
}
|
||||
|
||||
function commonLogPrefix(connectionType: ConnectionType, reconnectionToken: string, isReconnect: boolean): string {
|
||||
return `[remote-connection][${stringRightPad(connectionTypeToString(connectionType), 13)}][${reconnectionToken.substr(0, 5)}…][${isReconnect ? 'reconnect' : 'initial'}]`;
|
||||
}
|
||||
|
||||
function connectLogPrefix(options: ISimpleConnectionOptions, connectionType: ConnectionType): string {
|
||||
return `${commonLogPrefix(connectionType, options.reconnectionToken, !!options.reconnectionProtocol)}[${options.host}:${options.port}]`;
|
||||
}
|
||||
|
||||
function logElapsed(startTime: number): string {
|
||||
return `${Date.now() - startTime} ms`;
|
||||
}
|
||||
Reference in New Issue
Block a user