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Deprecated
This feature has been removed from the Web standards. Though some browsers may still support it, it is in the process of being dropped. Avoid using it and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
The RTCSessionDescriptionCallback type is used to represent the callback function passed into the deprecated callback-based version of createOffer() or createAnswer() when using them to create offers or answers.
Because this function type is part of the legacy WebRTC API, you should avoid using it (and the callback-based forms of createOffer() and createAnswer()) that make use of it.
Syntax
RTCSessionDescriptionCallback(description);
Parameters
description- An
RTCSessionDescriptionInit(orRTCSessionDescription) object describing the session being offered or being accepted. This object contains thetypeandsdpproperties which are part ofRTCSessionDescription.
Return value
The callback doesn't need to return anything, so the return value is undefined.
Example
var pc = new RTCPeerConnection();
var descriptionCallback = function(offer) {
pc.setLocalDescription(offer);
}
pc.createOffer(descriptionCallback);
Specifications
| Specification | Status | Comment |
|---|---|---|
| WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCSessionDescriptionCallback' in that specification. |
Working Draft | Initial definition. |
Browser compatibility
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | 22 (22) | ? | ? | ? |
Deprecated in favor of Promise-based versions of createOffer() and createAnswer() |
52.0 | ? | 37 (37) | ? | ? | ? |
Callback input is RTCSessionDescriptionInit |
? | ? | 53 (53) | ? | ? | ? |
| Feature | Android Webview | Chrome for Android | Edge | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | 24.0 (24) | ? | ? | ? |
| Promise-based version | 52.0 | 52.0 | ? | 37.0 (37) | ? | ? | ? |
Callback input is RTCSessionDescriptionInit |
? | ? | ? | 53.0 (53) | ? | ? | ? |
[1] This callback type was deprecated in Chrome 49.