This feature is obsolete.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
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
false) or by the site or app script (if
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
var stream = aDataChannel.stream;
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: " +dataChannel.stream
|WebRTC 1.0: Real-time Communication Between Browsers
The definition of 'RTCDataChannel.id' in that specification.
|Candidate Recommendation||Initial specification.|
|Feature||Android webview||Chrome for Android||Edge mobile||Firefox for Android||Opera Android||iOS Safari||Samsung Internet|