Instance Method

session(_:peer:didChange:)

Called when the state of a nearby peer changes.

Required.

Declaration

func session(_ session: MCSession, peer peerID: MCPeerID, didChange state: MCSessionState)

Parameters

session: The session that manages the nearby peer whose state changed.
peerID: The ID of the nearby peer whose state changed.
state: The new state of the nearby peer.

Discussion

This delegate method is called with the following state values when the nearby peer’s state changes:

MCSessionState.connected—the nearby peer accepted the invitation and is now connected to the session.
MCSessionState.notConnected—the nearby peer declined the invitation, the connection could not be established, or a previously connected peer is no longer connected.

See Also

MCSession Delegate Methods

func session(MCSession, didReceive: Data, fromPeer: MCPeerID)

Indicates that an NSData object has been received from a nearby peer.

Required.

func session(MCSession, didStartReceivingResourceWithName: String, fromPeer: MCPeerID, with: Progress)

Indicates that the local peer began receiving a resource from a nearby peer.

Required.

func session(MCSession, didFinishReceivingResourceWithName: String, fromPeer: MCPeerID, at: URL?, withError: Error?)

Indicates that the local peer finished receiving a resource from a nearby peer.

Required.

func session(MCSession, didReceive: InputStream, withName: String, fromPeer: MCPeerID)

Called when a nearby peer opens a byte stream connection to the local peer.

Required.

func session(MCSession, didReceiveCertificate: [Any]?, fromPeer: MCPeerID, certificateHandler: (Bool) -> Void)

Called to validate the client certificate provided by a peer when the connection is first established.