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• 句法
• 参数
• 返回值
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

RTCDataChannel.close() method closes the RTCDataChannel . Either peer is permitted to call this method to initiate closure of the channel.

Closure of the data channel is not instantaneous. Most of the process of closing the connection is handled asynchronously; you can detect when the channel has finished closing by watching for a close event on the data channel.

The sequence of events which occurs in response to this method being called:

1. RTCDataChannel.readyState 被设为 "closing" .
2. A background task is established to handle the remainder of the steps below, and close() returns to the caller.
3. The transport layer deals with any buffered messages; the protocol layer decides whether to send them or discard them.
4. The underlying data transport is closed.
5. RTCDataChannel.readyState property is set to "closed" .
6. If the transport was closed with an error, the RTCDataChannel is sent a NetworkError 事件。
7. close event is sent to the channel.

In Firefox, the RTCDataChannel interface was implemented under the name DataChannel until Firefox 24, so this method was called DataChannel.close() .

句法

RTCDataChannel.close();
					

参数

None.

返回值

undefined .

范例

var pc = new RTCPeerConnection();
var dc = pc.createDataChannel("my channel");
dc.onmessage = function (event) {
  console.log("received: " + event.data);
  dc.close(); // We decided to close after the first received message
};
dc.onopen = function () {
  console.log("datachannel open");
};
dc.onclose = function (
  console.log("datachannel close");
};
// Now negotiate the connection and so forth...
					

规范

规范	状态	注释
WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCDataChannel.close()' in that specification.	候选推荐	最初的规范。

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
close	Chrome 56	Edge ≤79	Firefox Yes	IE No	Opera 43	Safari No	WebView Android 56	Chrome Android 56	Firefox Android Yes	Opera Android 43	Safari iOS No	Samsung Internet Android 6.0

图例

完整支持

完整支持

不支持

不支持

另请参阅

• WebRTC
• RTCDataChannel
• RTCDataChannel.readyState
• close event

元数据

• 最后修改： 2019 年 3 月 23 日

相关话题

1. WebRTC API
2. RTCDataChannel
3. 特性

   1. binaryType
   2. bufferedAmount
   3. bufferedAmountLowThreshold
   4. id
   5. label
   6. maxPacketLifeTime
   7. maxRetransmits
   8. negotiated
   9. onbufferedamountlow
   10. onclose
   11. onclosing
   12. onerror
   13. onmessage
   14. onopen
   15. ordered
   16. 协议
   17. readyState
   18. reliable
   19. stream
4. 方法

   1. close()
   2. send()
5. 继承：

   1. EventTarget
6. Related pages for WebRTC

   1. MediaDevices.getUserMedia()
   2. Navigator.mediaDevices
   3. RTCCertificate
   4. RTCDTMFSender
   5. RTCDTMFToneChangeEvent
   6. RTCDataChannelEvent
   7. RTCDtlsTransport
   8. RTCErrorEvent
   9. RTCIceCandidate
   10. RTCIceTransport
   11. RTCPeerConnection
   12. RTCPeerConnectionIceErrorEvent
   13. RTCPeerConnectionIceEvent
   14. RTCRtpReceiver
   15. RTCRtpSender
   16. RTCRtpTransceiver
   17. RTCSctpTransport
   18. RTCSessionDescription
   19. RTCStatsEvent
   20. RTCStatsReport
   21. RTCTrackEvent