RTCIceCandidate.address

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句法
Security notes
用法注意事项
范例
规范
浏览器兼容性
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RTCIceCandidate interface's read-only address property is a string providing the address of the device which is the source of the candidate. address is null by default if not otherwise specified.

address field's value is set when the RTCIceCandidate() constructor is used. You can't specify the address in the options object, but the address is automatically extracted from the candidate a-line, if it's formatted properly.

句法

var address = RTCIceCandidate.address;

值

A DOMString providing the IP address from which the candidate comes.

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。

Security notes

It's important to note here that although WebRTC does not require the two peers on an RTCPeerConnection to know one another's true IP addresses, the address property on RTCIceCandidate can expose more information about the source of the remote peer than the user expects. The IP address can be used to derive information about the remote device's location, network topology, and so forth. It can also be used for fingerprinting purposes.

The candidate IP addresses are always exposed to the application through address , and unsavory applications can in turn potentially reveal the address to the user. This can occur without the remote peer's consent.

Applications being built with user privacy and security in mind can choose to limit the permitted candidates to relay candidates only. Doing so prevents the remote user's address from being exposed, but reduces the pool of available candidates to choose from. To do this, configure the ICE agent's ICE transport policy using RTCConfiguration ，像这样：

var rtcConfig = {
  iceServers: [
    {
      urls: "turn:myturn.server.ip",
      username: "username",
      credential: "password"
    }
  ],
  iceTransportPolicy: "relay"
}

通过设置 RTCConfiguration.iceTransportPolicy to "relay" , any host candidates (candidates where the IP address is the peer's own IP address) are left out of the pool of candidates, as are any other candidates which aren't relay candidates.

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 fifth field, "192.168.0.56" is the IP address in this candidate's a-line string.

范例

This code snippet uses the value of address to implement an IP address based ban feature.

if (ipBanList.includes(candidate.address)) {
  rejectCandidate(candidate);
} else {
  acceptCandidate(candidate);
}

规范

规范	状态	注释
WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCIceCandidate: address' 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
`address`	Chrome 74	Edge 79 79 ≤18 — 79 Alternate Name Alternate Name Uses the non-standard name: `ip`	Firefox ?	IE 不支持 No	Opera ?	Safari ?	WebView Android 74	Chrome Android 74	Firefox Android ?	Opera Android ?	Safari iOS ?	Samsung Internet Android 11.0

图例

完整支持
不支持
兼容性未知 ?
使用非标名称。

元数据

最后修改： Jan 25, 2020

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

Security notes

用法注意事项

范例

规范

浏览器兼容性

图例

相关话题