RTCSessionDescription.type

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The property RTCSessionDescription.type is a read-only value of type RTCSdpType which describes the description's type.

Syntax

var value = sessionDescription.type;
sessionDescription.type = value;

Value

The possible values are defined by an enum of type RTCSdpType.

The allowed values are those of an enum of type RTCSdpType:

  • "offer", the description is the initial proposal in an offer/answer exchange.
  • "answer", the description is the definitive choice in an offer/answer exchange.
  • "pranswer", the description is a provisional answer and may be changed when the definitive choice will be given.
  • "rollback", the description rolls back to offer/answer state to the last stable state.

Example

// The remote description has been set previously on pc, a RTCPeerconnection

alert(pc.remoteDescription.type);

Specifications

Specification Status Comment
WebRTC 1.0: Real-time Communication Between Browsers
The definition of 'RTCSessionDescription.type' in that specification.
Candidate Recommendation Initial specification.

Browser compatibility

DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
type
Experimental
Chrome Full support YesEdge Full support 15Firefox Full support Yes
Prefixed
Full support Yes
Prefixed
Prefixed Implemented with the vendor prefix: moz
IE No support NoOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes

Legend

Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
Requires a vendor prefix or different name for use.
Requires a vendor prefix or different name for use.

See also