/**
 * Delegate to handle PeerConnection state changes.
 * @public
 */
export interface PeerConnectionDelegate {
    /**
     * 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.
     * @param event - Event.
     */
    onconnectionstatechange?(event: Event): void;
    /**
     * Triggered when an RTCDataChannel is added to the connection by the
     * remote peer calling createDataChannel().
     * @param event - RTCDataChannelEvent.
     */
    ondatachannel?(event: RTCDataChannelEvent): void;
    /**
     * Triggered when a new ICE candidate has been found.
     * @param event - RTCPeerConnectionIceEvent.
     */
    onicecandidate?(event: RTCPeerConnectionIceEvent): void;
    /**
     * Triggered when an error occurred during ICE candidate gathering.
     * @param event - RTCPeerConnectionIceErrorEvent.
     */
    onicecandidateerror?(event: RTCPeerConnectionIceErrorEvent): void;
    /**
     * This happens whenever the local ICE agent needs to deliver a message to
     * the other peer through the signaling server. This lets the ICE agent
     * perform negotiation with the remote peer without the browser itself
     * needing to know any specifics about the technology being used for
     * signalingTriggered when the IceConnectionState changes.
     * @param event - Event.
     */
    oniceconnectionstatechange?(event: Event): void;
    /**
     * Triggered when the ICE gathering state changes.
     * @param event - Event.
     */
    onicegatheringstatechange?(event: Event): void;
    /**
     * Triggered when renegotiation is necessary.
     * @param event - Event.
     */
    onnegotiationneeded?(event: Event): void;
    /**
     * Triggered when the SignalingState changes.
     * @param event - Event.
     */
    onsignalingstatechange?(event: Event): void;
    /**
     * Triggered when a new track is signaled by the remote peer, as a result of setRemoteDescription.
     * @param event - Event.
     */
    ontrack?(event: Event): void;
}