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• 句法
• 范例
• 规范
• 浏览器兼容性
• 相关话题

The read-only property sdpMid 在 RTCIceCandidate interface returns a DOMString specifying the media stream identification tag of the media component with which the candidate is associated. This ID uniquely identifies a given stream for the component with which the candidate is associated.

This property can be configured by specifying the value of the sdpMid property when constructing the new candidate object using RTCIceCandidate() . If you call the constructor with an m-line string instead of an RTCIceCandidateInit object, the value of sdpMid is extracted from the specified candidate m-line string.

句法

var sdpMid = RTCIceCandidate.sdpMid;
					

值

A DOMString which uniquely identifies the source media component from which the candidate draws data, or null if no such association exists for the candidate.

注意： Attempting to add a candidate (using addIceCandidate() ) that has a value of null for either sdpMid or sdpMLineIndex will throw a TypeError 异常。

范例

...

规范

规范	状态	注释
WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCIceCandidate.sdpMid' in that specification.	候选推荐	初始定义。

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
sdpMid	Chrome 23	Edge 15	Firefox 22	IE 不支持 No	Opera 15	Safari Yes	WebView Android Yes	Chrome Android 25	Firefox Android Yes	Opera Android 14	Safari iOS Yes	Samsung Internet Android 1.5

图例

完整支持

完整支持

不支持

不支持

元数据

• 最后修改： Mar 18, 2019

相关话题

1. WebRTC API
2. RTCIceCandidate
3. 构造函数

   1. RTCIceCandidate()
4. 特性

   1. address
   2. candidate
   3. component
   4. foundation
   5. port
   6. priority
   7. 协议
   8. relatedAddress
   9. relatedPort
   10. sdpMid
   11. sdpMLineIndex
   12. usernameFragment
5. 方法

   1. toJSON()
6. 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. RTCIceTransport
   11. RTCPeerConnection
   12. RTCPeerConnectionIceErrorEvent
   13. RTCPeerConnectionIceEvent
   14. RTCRtpReceiver
   15. RTCRtpSender
   16. RTCRtpTransceiver
   17. RTCSctpTransport
   18. RTCSessionDescription
   19. RTCStatsEvent
   20. RTCStatsReport
   21. RTCTrackEvent