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• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

只读 RTCDataChannel property negotiated indicates whether the RTCDataChannel 's connection was negotiated by the Web app ( true ) or by the WebRTC layer ( false ). 默认为 false .

见 Creating a data channel in Using WebRTC data channels for further information about this property.

句法

var negotiated = aDataChannel.negotiated;
					

值

true 若 RTCDataChannel 's connection was negotiated by the Web app itself; false if the negotiation was handled by the WebRTC layer. The default is false .

范例

The code snippet below checks the value of negotiated ; if it's true , a  function called shutdownRemoteChannel() is called with the channel's id ; presumably this would be implemented to transmit a shutdown signal to the remote peer prior to terminating the connection.

if (dataChannel.negotiated) {
  shutdownRemoteChannel(dataChannel.id);
}
					

规范

规范	状态	注释
WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCDataChannel.negotiated' 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
negotiated	Chrome 56	Edge ≤79	Firefox 68	IE No	Opera 43	Safari No	WebView Android 56	Chrome Android 56	Firefox Android 68	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

实验。期望将来行为有所改变。

实验。期望将来行为有所改变。

另请参阅

• WebRTC
• Using WebRTC data channels
• RTCDataChannel
• RTCPeerConnection.createDataChannel()

元数据

• 最后修改： 2020 年 1 月 22 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