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The WebRTC API's RTCIceCandidateType enumerated type provides a set of DOMString values representing the types of ICE candidate that can arrive. These strings are taken directly from the candidate a-line in SDP.

Values

These candidate types are listed in order of priority; the higher in the list they are, the more efficient they are.

host
The candidate is a host candidate, whose IP address as specified in the RTCIceCandidate.ip property is in fact the true address of the remote peer.
srflx
The candidate is a server reflexive candidate; the ip indicates an intermediary address assigned by the STUN server to represent the candidate's peer anonymously.
prflx
The candidate is a peer reflexive candidate; the ip is an intermediary address assigned by the STUN server to represent the candidate's peer anonymously.
relay
The candidate is a relay candidate, obtained from a TURN server. The relay candidate's IP address is an address the TURN server uses to forward the media between the two peers.

Usage notes

The RTCIceCandidateType enumeration is used by the type property of RTCIceCandidate objects, as well as when reporting statistics on candidates using RTCIceCandidateStats.candidateType.

Specifications

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

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic supportChrome No support No
Notes
No support No
Notes
Notes An RTCIceCandidate object's type is not maintained by this browser.
Edge ? Firefox No support No
Notes
No support No
Notes
Notes An RTCIceCandidate object's type is not maintained by this browser.
IE ? Opera ? Safari ? WebView Android No support No
Notes
No support No
Notes
Notes An RTCIceCandidate object's type is not maintained by this browser.
Chrome Android No support No
Notes
No support No
Notes
Notes An RTCIceCandidate object's type is not maintained by this browser.
Edge Mobile ? Firefox Android No support No
Notes
No support No
Notes
Notes An RTCIceCandidate object's type is not maintained by this browser.
Opera Android ? Safari iOS ? Samsung Internet Android ?

Legend

No support  
No support
Compatibility unknown  
Compatibility unknown
See implementation notes.
See implementation notes.

Document Tags and Contributors

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