RTCDataChannel.onopen
This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
The RTCDataChannel.onopen
property is an EventHandler
which specifies a function to be called when the open
event is fired; this is a simple Event
which is sent when the data channel's underlying data transport—the link over which the RTCDataChannel
's messages flow—is established or re-established.
Syntax
RTCDataChannel.onopen = function;
Value
A function which the browser will call to handle the open
event. The function receives as its only input parameter the event itself, of type Event
.
Example
This example adds a new data channel to an existing RTCPeerConnection
, myPeerConnection
. It then establishes an open
event handler which updates some user interface elements to prepare them for being used to send messages over the data channel.
let dc = myPeerConnection.createDataChannel("Message Channel"); dc.onopen = function(event) { let messageBox = document.getElementById("messageBox"); let sendButton = document.getElementById("sendButton"); messageBox.disabled = false; messageBox.focus(); sendButton.disabled = false; }
Specifications
Specification | Status | Comment |
---|---|---|
WebRTC 1.0: Real-time Communication Between Browser The definition of 'RTCDataChannel.onopen' in that specification. |
Working Draft | Initial specification. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | (Yes) | 22 (22) [1] | No support | (Yes) | ? |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
---|---|---|---|---|---|---|---|
Basic support | No support | 28 [2] | 22.0 (22) [1] | No support | No support | No support | (Yes) |
[1] The interface is called DataChannel
and not RTCDataChannel
in Firefox. However, a binding has been in place since Firefox 24 so that either name will work.
[2] WebRTC, including RTCDataChannel
, was introduced in Chrome 28 for Android behind a flag, and enabled by default starting in Chrome 29 for Android.
See also
- WebRTC
- The
open
event and its type,Event
. RTCDataChannel.onclose
- The
close
event and its type,Event
.
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/rtcdatachannel/onopen