RTCIceCandidateInit

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WebRTC API's RTCIceCandidateInit dictionary, which contains the information needed to fundamentally describe an RTCIceCandidate . RTCIceCandidateInit is used when using new RTCIceCandidate() to create a new ICE candidate object. It's also used as the return value from the RTCIceCandidate.toJSON() method, and can be passed directly into RTCPeerConnection.addIceCandidate() to add a candidate to the peer connection.

candidate 可选: The ICE candidate-attribute . If the candidate is an indicator that there are no further candidates (rather than representing a new candidate), this is the empty string ( "" ). The default is the empty string.
sdpMid 可选: The identification tag of the media stream with which the candidate is associated, or null if there is no associated media stream. The default is null .
sdpMLineIndex 可选: The zero-based index of the m-line within the SDP of the media description with which the candidate is associated, or null if no such associated exists. The default is null .
usernameFragment 可选: DOMString containing a string which uniquely identifies the remote peer. This string is generated by WebRTC at the beginning of the session, and at least 24 bits worth of the string contain random data. The string may be up to 256 characters long. This property has no default value and is not present unless set explicitly.

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

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
`RTCIceCandidateInit`	Chrome Yes	Edge ≤18	Firefox 22	IE 不支持 No	Opera Yes	Safari ?	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS ?	Samsung Internet Android Yes
`candidate`	Chrome Yes	Edge ≤18	Firefox 22 注意事项 22 注意事项 Prior to Firefox 68, the `candidate` property was required; Firefox 68 and later make it optional per a mid-2017 specification update.	IE 不支持 No	Opera Yes	Safari ?	WebView Android Yes	Chrome Android Yes	Firefox Android Yes 注意事项 Yes 注意事项 Prior to Firefox 68, the `candidate` property was required; Firefox 68 and later make it optional per a mid-2017 specification update.	Opera Android Yes	Safari iOS ?	Samsung Internet Android Yes
`sdpMid`	Chrome Yes	Edge ≤18	Firefox 22	IE 不支持 No	Opera Yes	Safari ?	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS ?	Samsung Internet Android Yes
`sdpMLineIndex`	Chrome Yes	Edge ≤18	Firefox 22	IE 不支持 No	Opera Yes	Safari ?	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS ?	Samsung Internet Android Yes
`usernameFragment`	Chrome Yes	Edge ≤18	Firefox 67	IE 不支持 No	Opera Yes	Safari ?	WebView Android Yes	Chrome Android Yes	Firefox Android 67	Opera Android Yes	Safari iOS ?	Samsung Internet Android Yes