RTCPeerConnection
The RTCPeerConnection interface represents a WebRTC connection between the local computer and a remote peer. It provides methods to connect to a remote peer, maintain and monitor the connection, and close the connection once it's no longer needed.
Properties
The canTrickleIceCandidates read-only property of the RTCPeerConnection interface returns a boolean value which indicates whether or not the remote peer can accept trickled ICE candidates.
The connectionState read-only 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.
The currentLocalDescription read-only property of the RTCPeerConnection interface returns an RTCSessionDescription object describing the local end of the connection as it was most recently successfully negotiated since the last time the RTCPeerConnection finished negotiating and connecting to a remote peer. Also included is a list of any ICE candidates that may already have been generated by the ICE agent since the offer or answer represented by the description was first instantiated.
The currentRemoteDescription read-only property of the RTCPeerConnection interface returns an RTCSessionDescription object describing the remote end of the connection as it was most recently successfully negotiated since the last time the RTCPeerConnection finished negotiating and connecting to a remote peer. Also included is a list of any ICE candidates that may already have been generated by the ICE agent since the offer or answer represented by the description was first instantiated.
The iceConnectionState read-only property of the RTCPeerConnection interface returns a string which state of the ICE agent associated with the RTCPeerConnection: new, checking, connected, completed, failed, disconnected, and closed.
The iceGatheringState read-only property of the RTCPeerConnection interface returns a string that describes the overall ICE gathering state for this connection. This lets you detect, for example, when collection of ICE candidates has finished.
The localDescription read-only property of the RTCPeerConnection interface returns an RTCSessionDescription describing the session for the local end of the connection. If it has not yet been set, this is null.
The pendingLocalDescription read-only property of the RTCPeerConnection interface returns an RTCSessionDescription object describing a pending configuration change for the local end of the connection.
The pendingRemoteDescription read-only property of the RTCPeerConnection interface returns an RTCSessionDescription object describing a pending configuration change for the remote end of the connection.
The remoteDescription read-only property of the RTCPeerConnection interface returns a RTCSessionDescription describing the session (which includes configuration and media information) for the remote end of the connection. If this hasn't been set yet, this is null.
The sctp read-only property of the RTCPeerConnection interface returns an RTCSctpTransport describing the SCTP transport over which SCTP data is being sent and received. If SCTP hasn't been negotiated, this value is null.
The signalingState read-only property of the RTCPeerConnection interface returns a string value describing the state of the signaling process on the local end of the connection while connecting or reconnecting to another peer. See Signaling in our WebRTC session lifetime page.
Functions
The addIceCandidate() method of the RTCPeerConnection interface adds a new remote candidate to the connection's remote description, which describes the state of the remote end of the connection.
The addIceCandidate() method of the RTCPeerConnection interface adds a new remote candidate to the connection's remote description, which describes the state of the remote end of the connection.
The addTrack() method of the RTCPeerConnection interface adds a new media track to the set of tracks which will be transmitted to the other peer.
The addTransceiver() method of the RTCPeerConnection interface creates a new RTCRtpTransceiver and adds it to the set of transceivers associated with the RTCPeerConnection. Each transceiver represents a bidirectional stream, with both an RTCRtpSender and an RTCRtpReceiver associated with it.
The createAnswer() method of the RTCPeerConnection interface creates an SDP answer to an offer received from a remote peer during the offer/answer negotiation of a WebRTC connection.
The createAnswer() method of the RTCPeerConnection interface creates an SDP answer to an offer received from a remote peer during the offer/answer negotiation of a WebRTC connection.
The createDataChannel() method of the RTCPeerConnection interface creates a new channel linked with the remote peer, over which any kind of data may be transmitted. This can be useful for back-channel content, such as images, file transfer, text chat, game update packets, and so forth.
The createOffer() method of the RTCPeerConnection interface initiates the creation of an SDP offer for the purpose of starting a new WebRTC connection to a remote peer.
The createOffer() method of the RTCPeerConnection interface initiates the creation of an SDP offer for the purpose of starting a new WebRTC connection to a remote peer.
The getConfiguration() method of the RTCPeerConnection interface returns an object which indicates the current configuration of the RTCPeerConnection on which the method is called.
The getReceivers() method of the RTCPeerConnection interface returns an array of RTCRtpReceiver objects, each of which represents one RTP receiver. Each RTP receiver manages the reception and decoding of data for a MediaStreamTrack on an RTCPeerConnection.
The getSenders() method of the RTCPeerConnection interface returns an array of RTCRtpSender objects, each of which represents the RTP sender responsible for transmitting one track's data. A sender object provides methods and properties for examining and controlling the encoding and transmission of the track's data.
The getStats() method of the RTCPeerConnection interface returns a promise which resolves with data providing statistics about either the overall connection or about the specified MediaStreamTrack.
The getStats() method of the RTCPeerConnection interface returns a promise which resolves with data providing statistics about either the overall connection or about the specified MediaStreamTrack.
The getTransceivers() method of the RTCPeerConnection interface returns a list of the RTCRtpTransceiver objects being used to send and receive data on the connection.
The removeTrack() method of the RTCPeerConnection interface tells the local end of the connection to stop sending media from the specified track, without actually removing the corresponding RTCRtpSender from the list of senders as reported by RTCPeerConnection.getSenders(). If the track is already stopped, or is not in the connection's senders list, this method has no effect.
The restartIce() method of the RTCPeerConnection interface allows a web application to request that ICE candidate gathering be redone on both ends of the connection. This simplifies the process by allowing the same method to be used by either the caller or the receiver to trigger an ICE restart.
The setConfiguration() method of the RTCPeerConnection interface sets the current configuration of the connection based on the values included in the specified object. This lets you change the ICE servers used by the connection and which transport policies to use.
The setLocalDescription() method of the RTCPeerConnection interface changes the local description associated with the connection. This description specifies the properties of the local end of the connection, including the media format. The method takes a single parameter—the session description—and it returns a Promise which is fulfilled once the description has been changed, asynchronously.
The setLocalDescription() method of the RTCPeerConnection interface changes the local description associated with the connection. This description specifies the properties of the local end of the connection, including the media format. The method takes a single parameter—the session description—and it returns a Promise which is fulfilled once the description has been changed, asynchronously.
The setRemoteDescription() method of the RTCPeerConnection interface sets the specified session description as the remote peer's current offer or answer. The description specifies the properties of the remote end of the connection, including the media format. The method takes a single parameter—the session description—and it returns a Promise which is fulfilled once the description has been changed, asynchronously.
The setRemoteDescription() method of the RTCPeerConnection interface sets the specified session description as the remote peer's current offer or answer. The description specifies the properties of the remote end of the connection, including the media format. The method takes a single parameter—the session description—and it returns a Promise which is fulfilled once the description has been changed, asynchronously.