RTCIceCandidate.foundation

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句法
用法注意事项
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RTCIceCandidate interface's read-only foundation property is a string which uniquely identifies the candidate across multiple transports. As such, the foundation can be used to correlate candidates that are present on multiple RTCIceTransport 对象

句法

var foundation = RTCIceCandidate.foundation;

值

A DOMString which uniquely identifies the candidate across all RTCIceTransport s on which it is available.

注意： 若 port is null — and port is supported by the 用户代理 — passing the candidate to addIceCandidate() will fail, throwing an OperationError 异常。

用法注意事项

Consider this SDP attribute line (a-line) which describes an ICE candidate:

a=candidate:4234997325 1 udp 2043278322 192.168.0.56 44323 typ host

The field "4234997325" is the foundation.

范例

This code snippet uses the foundation of two candidates to determine if they're actually the same candidate.

if (candidate1.foundation == candidate2.foundation) {
  /* the two candidates are the same, even if they're on
     different transports */
}

规范

规范	状态	注释
WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCIceCandidate.foundation' 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
`foundation`	Chrome 74	Edge ≤18	Firefox 不支持 No	IE 不支持 No	Opera 不支持 No	Safari ?	WebView Android 74	Chrome Android 74	Firefox Android ?	Opera Android 不支持 No	Safari iOS ?	Samsung Internet Android 11.0

图例

完整支持
不支持
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元数据

最后修改： Mar 18, 2019

WebRTC API
RTCIceCandidate
构造函数
1. RTCIceCandidate()
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
方法
1. toJSON()
Related pages for WebRTC

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句法

值

用法注意事项

范例

规范

浏览器兼容性

图例

相关话题