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• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

ongatheringstatechange event handler for the RTCIceTransport interface specifies an event handler that is to be called when the gatheringstatechange event occurs on the transport. This event is delivered whenever the transport's gatheringState 特性改变。

句法

RTCIceTransport.ongatheringstatechange = stateChangeHandler;
					

值

A function to be called when the RTCIceTransport object's gathering state changes. To determine the new state, examine the value of gatheringState .

The gathering state indicates whether or not the ICE agent has begun gathering candidates, and if so, whether or not gathering has finished. Its possible values are:

"new"

RTCIceTransport is newly created and has not yet started to gather ICE candidates.

"gathering"

The transport is in the process of gathering candidates.

"complete"

The transport has finished gathering ICE candidates and has sent the end-of-candidates indicator to the remote device. The transport won't gather any further candidates unless an ICE restart occurs, at which point the gathering process starts over from scratch.

范例

This snippet establishes a handler for the gatheringstatechange event that checks to see if the state has changed to "complete" , indicating that all ICE candidates from both the local and remote peers have been received and processed.

var iceTransport = pc.getSenders()[0].transport.transport;
iceTransport.ongatheringstatechange = function(event) {
  if (iceTransport.gatheringState == "complete") {
    allCandidatesReceived(pc);
  }
}
					

规范

规范	状态	注释
WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCIceTransport.ongatheringstatechange' 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
ongatheringstatechange	Chrome No	Edge No	Firefox No	IE No	Opera No	Safari No	WebView Android No	Chrome Android No	Firefox Android No	Opera Android No	Safari iOS No	Samsung Internet Android No

图例

不支持

不支持

另请参阅

• gatheringstatechange event and its type, 事件 .
• The other event handlers for RTCIceTransport : onstatechange and onselectedcandidatepairchange

元数据

• 最后修改： Mar 18, 2019

相关话题

1. WebRTC API
2. RTCIceTransport
3. 特性

   1. component
   2. gatheringState
   3. getRemoteCandidates()
   4. ongatheringstatechange
   5. onselectedcandidatepairchange
   6. onstatechange
   7. role
   8. state
4. 方法

   1. getLocalCandidates()
   2. getLocalParameters()
   3. getSelectedCandidatePair()
5. Related pages for WebRTC

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