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WebSocket

The WebSocket class represents WebSocket connections within a page. It provides the ability to inspect and manipulate the data being transmitted and received.

If you want to intercept or modify WebSocket frames, consider using WebSocketRoute.

方法 (Methods)​

isClosed​

Added before v1.9 webSocket.isClosed

Indicates that the web socket has been closed.

使用方式

webSocket.isClosed();

傳回值

url​

Added before v1.9 webSocket.url

Contains the URL of the WebSocket.

使用方式

webSocket.url();

傳回值

waitForEvent​

Added before v1.9 webSocket.waitForEvent

Waits for event to fire and passes its value into the predicate function. Returns when the predicate returns truthy value. Will throw an error if the webSocket is closed before the event is fired. Returns the event data value.

使用方式

await webSocket.waitForEvent(event);
await webSocket.waitForEvent(event, optionsOrPredicate, options);

參數

  • event string#

    Event name, same one would pass into webSocket.on(event).

  • optionsOrPredicate function | Object (optional)#

    • predicate function

      Receives the event data and resolves to truthy value when the waiting should resolve.

    • timeout number (optional)

      Maximum time to wait for in milliseconds. Defaults to 0 - no timeout. The default value can be changed via actionTimeout option in the config, or by using the browserContext.setDefaultTimeout() or page.setDefaultTimeout() methods.

    Either a predicate that receives an event or an options object. Optional.

  • options Object (optional)

    • predicate function (optional)#

      Receives the event data and resolves to truthy value when the waiting should resolve.

傳回值

事件 (Events)​

on('close')​

Added before v1.9 webSocket.on('close')

Fired when the websocket closes.

使用方式

webSocket.on('close', data => {});

事件資料

on('framereceived')​

Added in: v1.9 webSocket.on('framereceived')

Fired when the websocket receives a frame.

使用方式

webSocket.on('framereceived', data => {});

事件資料

on('framesent')​

Added in: v1.9 webSocket.on('framesent')

Fired when the websocket sends a frame.

使用方式

webSocket.on('framesent', data => {});

事件資料

on('socketerror')​

Added in: v1.9 webSocket.on('socketerror')

Fired when the websocket has an error.

使用方式

webSocket.on('socketerror', data => {});

事件資料