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• 值
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

The optional property usernameFragment 在 RTCIceCandidateInit dictionary specifies the value of the RTCIceCandidate 对象的 usernameFragment 特性。

值

A DOMString containing the username fragment (usually referred to in shorthand as "ufrag" or "ice-ufrag") that, along with the ICE password ("ice-pwd"), uniquely identifies a single ongoing ICE interaction, including for any communication with the STUN server. The string may be up to 256 characters long, and has no default value.

Randomization

At least 24 bits of the text in the ufrag are required to be randomly selected by the ICE layer at the beginning of the ICE session. The specifics for which bits are random and what the remainder of the ufrag text are are left up to the browser implementation to decide. For example, a browser might choose to always use a 24-character ufrag in which bit 4 of each character is randomly selected between 0 and 1. Another example: it might take a user-defined string and append three 8-bit random bytes to the end. Or perhaps every character is entirely random.

范例

...

规范

规范	状态	注释
WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCIceCandidateInit.usernameFragment' 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
usernameFragment	Chrome Yes	Edge ≤18	Firefox 67	IE No	Opera Yes	Safari ?	WebView Android Yes	Chrome Android Yes	Firefox Android 67	Opera Android Yes	Safari iOS ?	Samsung Internet Android Yes

图例

完整支持

完整支持

不支持

不支持

兼容性未知 ?

兼容性未知

另请参阅

• WebRTC API
• RTCIceCandidate.usernameFragment
• RTCPeerConnection.addIceCandidate()
• icecandidate
• Lifetime of a WebRTC session

元数据

• 最后修改： Mar 18, 2019

相关话题

1. WebRTC API
2. RTCIceCandidateInit
3. 特性

   1. candidate
   2. sdpMid
   3. sdpMLineIndex
   4. usernameFragment
4. 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. RTCIceTransport
   12. RTCPeerConnection
   13. RTCPeerConnectionIceErrorEvent
   14. RTCPeerConnectionIceEvent
   15. RTCRtpReceiver
   16. RTCRtpSender
   17. RTCRtpTransceiver
   18. RTCSctpTransport
   19. RTCSessionDescription
   20. RTCStatsEvent
   21. RTCStatsReport
   22. RTCTrackEvent