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RTCPeerConnection.connectionState

The read-only connectionState property of the RTCPeerConnection interface indicates the current state of the peer connection by returning one of the following string values: new, connecting, connected, disconnected, failed, or closed.

This state essentially represents the aggregate state of all ICE transports (which are of type RTCIceTransport or RTCDtlsTransport) being used by the connection.

When this property's value changes, a connectionstatechange event is sent to the RTCPeerConnection instance.

Syntax

var connectionState = RTCPeerConnection.connectionState;

Value

A string representing the current state of the connection, that is one of the following literals:

new

At least one of the connection's ICE transports (RTCIceTransport or RTCDtlsTransport objects) is in the new state, and none of them are in one of the following states: connecting, checking, failed, disconnected, or all of the connection's transports are in the closed state.

connecting

One or more of the ICE transports are currently in the process of establishing a connection; that is, their iceConnectionState is either checking or connected, and no transports are in the failed state.

connected

Every ICE transport used by the connection is either in use (state connected or completed) or is closed (state closed); in addition, at least one transport is either connected or completed.

disconnected

At least one of the ICE transports for the connection is in the disconnected state and none of the other transports are in the state failed, connecting, or checking.

failed

One or more of the ICE transports on the connection is in the failed state.

closed

The RTCPeerConnection is closed.

Example

var pc = new RTCPeerConnection(configuration);

/* ... */

var connectionState = pc.connectionState;

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
connectionState
72
79
No
No
60
11
72
72
No
51
11
11.0

See also

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https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/connectionState