This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The deprecated (and never part of the official specification) read-only RTCDataChannel property stream returns an ID number (between 0 and 65,535) which uniquely identifies the RTCDataChannel. This ID is set at the time the data channel is created, either by the user agent (if RTCDataChannel.negotiated is false) or by the site or app script (if negotiated is true).

This property has been replaced with the RTCDataChannel.id property. If you have code that uses stream, you will need to update, since browsers have begun to remove support for stream.


var stream = aDataChannel.stream;


An unsigned short value (that is, an integer between 0 and 65,535) which uniquely identifies the data channel.


var dataChannel = pc.createDataChannel("SampleChannel");
console.log("Data channel stream ID: " + </code>dataChannel.stream<code>);</code>


Specification Status Comment
WebRTC 1.0: Real-time Communication Between Browser
The definition of 'RTCDataChannel.id' in that specification.
Working Draft Initial specification.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) 22 (22) [1]
Removed in Firefox 50.
No support (Yes) ?
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? ? 22 (22) [1]
Removed in Firefox 50.
No support ? ?

[1] The interface is called DataChannel and not RTCDataChannel in Firefox, although a binding was added in Firefox 24 which allows either name to be used.

[2] Available in Firefox 22 as RTCDataChannel.stream, however.

See also


© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.

Non-standard Obsolete Property Read-only Reference RTCDataChannel stream WebRTC