chore: remove WebSocket implementation (#961)

WebSocket implementation currently is very incomplete, lacking
support in WebKit-Win and Firefox.

Author: aslushnikov

docs/api.md

@@ -19,7 +19,6 @@
 - [class: Request](#class-request)
 - [class: Response](#class-response)
 - [class: Selectors](#class-selectors)
-- [class: WebSocket](#class-websocket)
 - [class: TimeoutError](#class-timeouterror)
 - [class: Accessibility](#class-accessibility)
 - [class: Coverage](#class-coverage)
@@ -445,7 +444,6 @@ page.removeListener('request', logRequest);
 - [event: 'requestfailed'](#event-requestfailed)
 - [event: 'requestfinished'](#event-requestfinished)
 - [event: 'response'](#event-response)
-- [event: 'websocket'](#event-websocket)
 - [event: 'workercreated'](#event-workercreated)
 - [event: 'workerdestroyed'](#event-workerdestroyed)
 - [page.$(selector)](#pageselector)
@@ -618,11 +616,6 @@ Emitted when a request finishes successfully.
 
 Emitted when a [response] is received.
 
-#### event: 'websocket'
-- <[WebSocket]> websocket
-
-Emitted when a <[WebSocket]> is opened.
-
 #### event: 'workercreated'
 - <[Worker]>
 
@@ -3171,67 +3164,6 @@ const { selectors, firefox } = require('playwright');  // Or 'chromium' or 'webk
 })();
 ```
 
-### class: WebSocket
-
-The [WebSocket] class represents websocket connections in the page.
-
-<!-- GEN:toc -->
-- [event: 'close'](#event-close-2)
-- [event: 'error'](#event-error)
-- [event: 'messagereceived'](#event-messagereceived)
-- [event: 'messagesent'](#event-messagesent)
-- [event: 'open'](#event-open)
-- [webSocket.requestHeaders()](#websocketrequestheaders)
-- [webSocket.responseHeaders()](#websocketresponseheaders)
-- [webSocket.status()](#websocketstatus)
-- [webSocket.statusText()](#websocketstatustext)
-- [webSocket.url()](#websocketurl)
-<!-- GEN:stop -->
-
-#### event: 'close'
-
-Fired when the websocket closes.
-
-#### event: 'error'
-- <[String]> the error message
-
-Fired when the websocket has an error.
-
-#### event: 'messagereceived'
-- <[Buffer]|[String]> data recieved
-
-Fired when the websocket recieves a message.
-
-#### event: 'messagesent'
-- <[Buffer]|[String]> data recieved
-
-Fired when the websocket sends a message.
-
-#### event: 'open'
-
-Fired when the websocket opens.
-
-#### webSocket.requestHeaders()
-- returns: <[Promise]<[Object]>>
-
-#### webSocket.responseHeaders()
-- returns: <[Promise]<[Object]>>
-
-#### webSocket.status()
-- returns: <[number]>
-
-Contains the status code of the WebSocket (e.g., 200 for a success).
-
-#### webSocket.statusText()
-- returns: <[string]>
-
-Contains the status text of the WebSocket (e.g. usually an "OK" for a success).
-
-#### webSocket.url()
-- returns: <[string]>
-
-Contains the URL of the WebSocket.
-
 ### class: TimeoutError
 
 * extends: [Error]
@@ -3431,7 +3363,7 @@ If the function passed to the `worker.evaluateHandle` returns a [Promise], then
 ### class: BrowserServer
 
 <!-- GEN:toc -->
-- [event: 'close'](#event-close-3)
+- [event: 'close'](#event-close-2)
 - [browserServer.close()](#browserserverclose)
 - [browserServer.kill()](#browserserverkill)
 - [browserServer.process()](#browserserverprocess)

src/api.ts

@@ -24,7 +24,7 @@ export { TimeoutError } from './errors';
 export { Frame } from './frames';
 export { Keyboard, Mouse } from './input';
 export { JSHandle } from './javascript';
-export { Request, Response, WebSocket } from './network';
+export { Request, Response } from './network';
 export { Coverage, FileChooser, Page, Worker } from './page';
 export { Selectors } from './selectors';
 

src/chromium/crNetworkManager.ts

@@ -52,13 +52,6 @@ export class CRNetworkManager {
       helper.addEventListener(session, 'Network.responseReceived', this._onResponseReceived.bind(this)),
       helper.addEventListener(session, 'Network.loadingFinished', this._onLoadingFinished.bind(this)),
       helper.addEventListener(session, 'Network.loadingFailed', this._onLoadingFailed.bind(this)),
-      helper.addEventListener(session, 'Network.webSocketCreated', e => this._page._frameManager.onWebSocketCreated(e.requestId, e.url)),
-      helper.addEventListener(session, 'Network.webSocketWillSendHandshakeRequest', e => this._page._frameManager.onWebSocketRequest(e.requestId, e.request.headers)),
-      helper.addEventListener(session, 'Network.webSocketHandshakeResponseReceived', e => this._page._frameManager.onWebSocketResponse(e.requestId, e.response.status, e.response.statusText, e.response.headers)),
-      helper.addEventListener(session, 'Network.webSocketFrameSent', e => e.response.payloadData && this._page._frameManager.onWebSocketFrameSent(e.requestId, e.response.opcode, e.response.payloadData)),
-      helper.addEventListener(session, 'Network.webSocketFrameReceived', e => e.response.payloadData && this._page._frameManager.webSocketFrameReceived(e.requestId, e.response.opcode, e.response.payloadData)),
-      helper.addEventListener(session, 'Network.webSocketClosed', e => this._page._frameManager.webSocketClosed(e.requestId)),
-      helper.addEventListener(session, 'Network.webSocketFrameError', e => this._page._frameManager.webSocketError(e.requestId, e.errorMessage)),
     ];
   }
 

src/events.ts

@@ -46,16 +46,7 @@ export const Events = {
     FrameNavigated: 'framenavigated',
     Load: 'load',
     Popup: 'popup',
-    WebSocket: 'websocket',
     WorkerCreated: 'workercreated',
     WorkerDestroyed: 'workerdestroyed',
   },
-
-  WebSocket: {
-    Close: 'close',
-    Error: 'error',
-    MessageReceived: 'messagereceived',
-    MessageSent: 'messagesent',
-    Open: 'open',
-  }
 };

src/frames.ts

@@ -58,7 +58,6 @@ type ConsoleTagHandler = () => void;
 export class FrameManager {
   private _page: Page;
   private _frames = new Map<string, Frame>();
-  private _webSockets = new Map<string, network.WebSocket>();
   private _mainFrame: Frame;
   readonly _lifecycleWatchers = new Set<() => void>();
   readonly _consoleMessageTags = new Map<string, ConsoleTagHandler>();
@@ -120,7 +119,6 @@ export class FrameManager {
     for (const watcher of frame._documentWatchers)
       watcher(documentId);
     this.clearFrameLifecycle(frame);
-    this.clearWebSockets(frame);
     if (!initial)
       this._page.emit(Events.Page.FrameNavigated, frame);
   }
@@ -182,13 +180,6 @@ export class FrameManager {
       this._startNetworkIdleTimer(frame, 'networkidle2');
   }
 
-  clearWebSockets(frame: Frame) {
-    // TODO: attributet sockets to frames.
-    if (frame.parentFrame())
-      return;
-    this._webSockets.clear();
-  }
-
   requestStarted(request: network.Request) {
     this._inflightRequestStarted(request);
     const frame = request.frame();
@@ -228,50 +219,6 @@ export class FrameManager {
       this._page.emit(Events.Page.RequestFailed, request);
   }
 
-  onWebSocketCreated(requestId: string, url: string) {
-    const ws = new network.WebSocket(url);
-    this._webSockets.set(requestId, ws);
-  }
-
-  onWebSocketRequest(requestId: string, headers: network.Headers) {
-    const ws = this._webSockets.get(requestId);
-    if (ws) {
-      ws._requestSent(headers);
-      this._page.emit(Events.Page.WebSocket, ws);
-    }
-  }
-
-  onWebSocketResponse(requestId: string, status: number, statusText: string, headers: network.Headers) {
-    const ws = this._webSockets.get(requestId);
-    if (ws)
-      ws._responseReceived(status, statusText, headers);
-  }
-
-  onWebSocketFrameSent(requestId: string, opcode: number, data: string) {
-    const ws = this._webSockets.get(requestId);
-    if (ws)
-      ws._frameSent(opcode, data);
-  }
-
-  webSocketFrameReceived(requestId: string, opcode: number, data: string) {
-    const ws = this._webSockets.get(requestId);
-    if (ws)
-      ws._frameReceived(opcode, data);
-  }
-
-  webSocketClosed(requestId: string) {
-    const ws = this._webSockets.get(requestId);
-    if (ws)
-      ws._closed();
-    this._webSockets.delete(requestId);
-  }
-
-  webSocketError(requestId: string, errorMessage: string): void {
-    const ws = this._webSockets.get(requestId);
-    if (ws)
-      ws._error(errorMessage);
-  }
-
   provisionalLoadFailed(frame: Frame, documentId: string, error: string) {
     for (const watcher of frame._documentWatchers)
       watcher(documentId, new Error(error));

src/network.ts

@@ -17,7 +17,6 @@
 import * as frames from './frames';
 import { assert } from './helper';
 import * as platform from './platform';
-import { Events } from './events';
 
 export type NetworkCookie = {
   name: string,
@@ -308,70 +307,6 @@ export interface RequestDelegate {
   continue(overrides: { method?: string; headers?: Headers; postData?: string; }): Promise<void>;
 }
 
-export class WebSocket extends platform.EventEmitter {
-  private _url: string;
-  _status: number | null = null;
-  _statusText: string | null = null;
-  _requestHeaders: Headers | null = null;
-  _responseHeaders: Headers | null = null;
-
-  constructor(url: string) {
-    super();
-    this._url = url;
-  }
-
-  url(): string {
-    return this._url;
-  }
-
-  status(): number | null {
-    return this._status;
-  }
-
-  statusText(): string  | null {
-    return this._statusText;
-  }
-
-  requestHeaders(): Headers | null {
-    return this._requestHeaders;
-  }
-
-  responseHeaders(): Headers | null {
-    return this._responseHeaders;
-  }
-
-  _requestSent(headers: Headers) {
-    this._requestHeaders = {};
-    for (const [name, value] of Object.entries(headers))
-      this._requestHeaders[name.toLowerCase()] = value;
-  }
-
-  _responseReceived(status: number, statusText: string, headers: Headers) {
-    this._status = status;
-    this._statusText = statusText;
-    this._responseHeaders = {};
-    for (const [name, value] of Object.entries(headers))
-      this._responseHeaders[name.toLowerCase()] = value;
-    this.emit(Events.WebSocket.Open);
-  }
-
-  _frameSent(opcode: number, data: string) {
-    this.emit(Events.WebSocket.MessageSent, opcode === 2 ? Buffer.from(data, 'base64') : data);
-  }
-
-  _frameReceived(opcode: number, data: string) {
-    this.emit(Events.WebSocket.MessageReceived, opcode === 2 ? Buffer.from(data, 'base64') : data);
-  }
-
-  _error(errorMessage: string) {
-    this.emit(Events.WebSocket.Error, errorMessage);
-  }
-
-  _closed() {
-    this.emit(Events.WebSocket.Close);
-  }
-}
-
 // List taken from https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml with extra 306 and 418 codes.
 export const STATUS_TEXTS: { [status: string]: string } = {
   '100': 'Continue',

src/webkit/wkPage.ts

@@ -208,13 +208,6 @@ export class WKPage implements PageDelegate {
       helper.addEventListener(this._session, 'Network.responseReceived', e => this._onResponseReceived(e)),
       helper.addEventListener(this._session, 'Network.loadingFinished', e => this._onLoadingFinished(e)),
       helper.addEventListener(this._session, 'Network.loadingFailed', e => this._onLoadingFailed(e)),
-      helper.addEventListener(this._session, 'Network.webSocketCreated', e => this._page._frameManager.onWebSocketCreated(e.requestId, e.url)),
-      helper.addEventListener(this._session, 'Network.webSocketWillSendHandshakeRequest', e => this._page._frameManager.onWebSocketRequest(e.requestId, e.request.headers)),
-      helper.addEventListener(this._session, 'Network.webSocketHandshakeResponseReceived', e => this._page._frameManager.onWebSocketResponse(e.requestId, e.response.status, e.response.statusText, e.response.headers)),
-      helper.addEventListener(this._session, 'Network.webSocketFrameSent', e => e.response.payloadData && this._page._frameManager.onWebSocketFrameSent(e.requestId, e.response.opcode, e.response.payloadData)),
-      helper.addEventListener(this._session, 'Network.webSocketFrameReceived', e => e.response.payloadData && this._page._frameManager.webSocketFrameReceived(e.requestId, e.response.opcode, e.response.payloadData)),
-      helper.addEventListener(this._session, 'Network.webSocketClosed', e => this._page._frameManager.webSocketClosed(e.requestId)),
-      helper.addEventListener(this._session, 'Network.webSocketFrameError', e => this._page._frameManager.webSocketError(e.requestId, e.errorMessage)),
     ];
   }