RTCIceServer

The RTCIceServer dictionary defines how to connect to a single ICE server (such as a STUN or TURN server). It includes both the URL and the necessary credentials, if any, to connect to the server.

Properties

credential Optional

The credential to use when logging into the server. This is only used if the RTCIceServer represents a TURN server.

credentialType Optional

If the RTCIceServer represents a TURN server, this attribute specifies what kind of credential is to be used when connecting. This must be one of the values defined by the RTCIceCredentialType enum. he default is "password".

urls

This required property is either a single DOMString or an array of DOMStrings, each specifying a URL which can be used to connect to the server.

username Optional

If the RTCIceServer is a TURN server, then this is the username to use during the authentication process.

Avoid specifying an unnecessarily large number of URLs in the urls property; the startup time for your connection will go up substantially. Every server in the list will be contacted and tried out before one is selected to be used for negotiation.

Constants

RTCIceCredentialType

The RTCIceCredentialType enum use used in the credentialType property to define what kind of authentication credential is being provided in the credential property. This can be one of the values below.

Example

The configuration below establishes two ICE servers. The first one, stun:stun.services.mozilla.com, requires authentication, so the username and password are provided. The second server has two URLs: stun:stun.example.com and stun:stun-1.example.com.

var configuration = { iceServers: [{
                          urls: "stun:stun.services.mozilla.com",
                          username: "louis@mozilla.com", 
                          credential: "webrtcdemo"
                      }, {
                          urls: [
                                  "stun:stun.example.com",
                                  "stun:stun-1.example.com"
                          ]
                      }]
};

var pc = new RTCPeerConnection(configuration);

Once the configuration object has been created, it is passed into the RTCPeerConnection() constructor to use it as the configuration for the new peer connection.

Browser compatibility

See also

• RTCPeerConnection
• RTCConfiguration
• Lifetime of a WebRTC session
• WebRTC connectivity