在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

这是 实验性技术
检查 浏览器兼容性表格 要小心谨慎在生产中使用这之前。

草案
此页面不完整。

The property binaryType 在 RTCDataChannel 接口是 DOMString which specifies the type of JavaScript object which should be used to represent binary data received on the RTCDataChannel . Values allowed by the WebSocket.binaryType property are also permitted here: "blob" if Blob objects are being used or "arraybuffer" if ArrayBuffer objects are being used. The default is "blob" .

When a binary message is received on the data channel, the resulting message event's MessageEvent.data property is an object of the type specified by the binaryType .

句法

var type = aDataChannel.binaryType;
aDataChannel.binaryType = type;
					

值

A DOMString that can have one of these values:

"blob"

Received binary messages' contents will be contained in Blob 对象。

"arraybuffer"

Received binary messages' contents will be contained in ArrayBuffer 对象。

范例

This code configures a data channel to receive binary data in ArrayBuffer objects, and establishes a listener for message events which constructs a string representing the received data as a list of hexadecimal byte values.

var dc = peerConnection.createDataChannel("Binary");
dc.binaryType = "arraybuffer";
dc.onmessage = function(event) {
  let byteArray = new Uint8Array(event.data);
  let hexString = "";
  byteArray.forEach(function(byte) {
    hexString += byte.toString(16) + " ";
  });
};
					

规范

规范	状态	注释
WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCDataChannel.binaryType' 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
binaryType	Chrome Yes	Edge ≤79	Firefox 18	IE No	Opera Yes	Safari Yes	WebView Android 4.4	Chrome Android 29	Firefox Android 18	Opera Android Yes	Safari iOS No	Samsung Internet Android 2.0

图例

完整支持

完整支持

不支持

不支持

实验。期望将来行为有所改变。

实验。期望将来行为有所改变。

另请参阅

• WebRTC
• Using WebRTC data channels
• RTCDataChannel
• RTCDataChannel.send()

元数据

• 最后修改： 2019 年 3 月 23 日

相关话题

1. WebRTC API
2. RTCDataChannel
3. 特性

   1. binaryType
   2. bufferedAmount
   3. bufferedAmountLowThreshold
   4. id
   5. label
   6. maxPacketLifeTime
   7. maxRetransmits
   8. negotiated
   9. onbufferedamountlow
   10. onclose
   11. onclosing
   12. onerror
   13. onmessage
   14. onopen
   15. ordered
   16. 协议
   17. readyState
   18. reliable
   19. stream
4. 方法

   1. close()
   2. send()
5. 继承：

   1. EventTarget
6. Related pages for WebRTC

   1. MediaDevices.getUserMedia()
   2. Navigator.mediaDevices
   3. RTCCertificate
   4. RTCDTMFSender
   5. RTCDTMFToneChangeEvent
   6. RTCDataChannelEvent
   7. RTCDtlsTransport
   8. RTCErrorEvent
   9. RTCIceCandidate
   10. RTCIceTransport
   11. RTCPeerConnection
   12. RTCPeerConnectionIceErrorEvent
   13. RTCPeerConnectionIceEvent
   14. RTCRtpReceiver
   15. RTCRtpSender
   16. RTCRtpTransceiver
   17. RTCSctpTransport
   18. RTCSessionDescription
   19. RTCStatsEvent
   20. RTCStatsReport
   21. RTCTrackEvent