RTCPeerConnection.onconnectionstatechange

The RTCPeerConnection.onconnectionstatechange property specifies an event handler which is called to handle the connectionstatechange event when it occurs on an instance of RTCPeerConnection. This happens whenever the aggregate state of the connection changes. The aggregate state is a combination of the states of all of the individual network transports being used by the connection.

Syntax

RTCPeerConnection.onconnectionstatechange = eventHandler;

Value

A function which is called by the browser when the connectionstatechange event occurs on the RTCPeerConnection. The function receives as input a single parameter, which is an object of type Event. The event object contains no special information of note; you can look at the value of the peer connection's connectionState property to determine what the new state is.

Example

pc.onconnectionstatechange = function(event) {
  switch(pc.connectionState) {
    case "connected":
      // The connection has become fully connected
      break;
    case "disconnected":
    case "failed":
      // One or more transports has terminated unexpectedly or in an error
      break;
    case "closed":
      // The connection has been closed
      break;
  }
}

Specifications

Specification
WebRTC 1.0: Real-Time Communication Between Browsers (WebRTC 1.0)
# dom-rtcpeerconnection-onconnectionstatechange

Browser compatibility

BCD tables only load in the browser

See also