在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

RTCIceCandidate interface's read-only tcpType property is included on TCP candidates to provide additional details about the candidate type.

tcpType field's value is set when the RTCIceCandidate() constructor is used. You can't directly set its value; instead, its value is automatically extracted from the candidate a-line, if it's formatted properly.

句法

var tcpType = RTCIceCandidate.tcpType;
					

值

A DOMString whose value is one of those defined by the RTCIceTcpCandidateType enumerated type.

"active"

The transport will try to open an outbound connection but won't receive inoming connection requests.

"passive"

The transport will receive incoming connection requests but won't try to open an outbound connection.

"so"

The transport will try to open a connection simultaneously with its peer.

tcpType is null for UDP candidates.

范例

In this example, the candidate's 协议 and tcpType are used to adjust the user interface for simultaneous-open TCP candidates.

if (candidate.protocol == "tcp" && candidate.tcpType == "so") {
    adjustForSimultaneousOpen(candidate);
}
					

规范

规范	状态	注释
WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCIceCandidate.tcpType' 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
tcpType	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 不支持 No	Opera Android 不支持 No	Safari iOS ?	Samsung Internet Android 11.0

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
• Introduction to WebRTC protocols
• WebRTC connectivity
• RTCIceCandidate.protocol
• RTCIceCandidate.type

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