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.onerror
property is an EventHandler
which specifies a function to be called when the error
event is received. When an error occurs on the data channel, the function receives as input an ErrorEvent
object describing the error which occurred.
Syntax
RTCDataChannel.onerror = function;
Value
A function which the browser will call to handle the error
event when it occurs on the data channel. This function receives as its only input an ErrorEvent
object describing the event which was received. That event object, in turn, describes the error that took place.
Example
In the example below, a data channel is established, and an onerror
handler is added to it. The error handler passes information about the error to a UI library's alert box function to present an error message to the user.
let pc = new RTCPeerConnection(); let dc = pc.createDataChannel("PlayerControl"); dc.onerror = function(event) { myUILibrary.doAlertBox({ 'Network Error', // Alert title 'The error "' + event.message + '" occurred while handling player control network messages.', event.filename, event.lineno, event.colno }); } /* ... */
Specifications
Specification | Status | Comment |
---|---|---|
WebRTC 1.0: Real-time Communication Between Browser The definition of 'RTCDataChannel.onerror' in that specification. |
Working Draft | Initial specification. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | (Yes) | 24 (24) [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] | 24.0 (24) [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
error
event and its type,ErrorEvent
.