RTCDataChannelEvent - Web APIs 编辑

Experimental

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The RTCDataChannelEvent() constructor returns a new RTCDataChannelEvent object, which represents a datachannel event. These events sent to an RTCPeerConnection when its remote peer is asking to open an RTCDataChannel between the two peers.

You will rarely if ever construct an RTCDataChannelEvent by hand; instead, the WebRTC layer will generate and deliver them to you at the appropriate time. Just listen for the datachannel event to be received by the RTCPeerConnection and when you receive it, use the RTCDataChannelEvent.channel property to gain access to the data channel which has been opened.

Constructor

RTCDataChannelEvent()

The RTCDataChannelEvent() constructor creates a new RTCDataChannelEvent.

Properties

Also inherits properties from: Event

channel undefined

The read-only property RTCDataChannelEvent.channel returns the RTCDataChannel associated with the event.

Methods

This interface has no methods, but inherits methods from: Event

Examples

In this example, the datachannel event handler is set up to save the data channel reference and set up handlers for the events which need to be monitored. The channel property provides the RTCDataChannel representing the connection to the other peer.

pc.ondatachannel = function(event) {
  inboundDataChannel = event.channel;
  inboundDataChannel.onmessage = handleIncomingMessage;
  inboundDataChannel.onopen = handleChannelOpen;
  inboundDataChannel.onclose = handleChannelClose;
}

See A simple RTCDataChannel sample for another, more complete, example of how to use data channels.

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• WebRTC
• RTCDataChannel
• RTCDataChannel.ondatachannel
• A simple RTCDataChannel sample
• RTCPeerConnection (the target interface for datachannel events)