Why does my MCSession peer disconnect randomly?

Question

Im using MCNearbyServiceBrowser and MCNearbyServiceAdvertiser to join two peers to a MCSession. I am able to send data between them using MCSession\'s sendData method. All

Answer 1

I was disconnecting immediately after I accepted the connection request. Observing the state, I saw it change from MCSessionStateConnected to MCSessionStateNotConnected.

I am creating my sessions with:

[[MCSession alloc] initWithPeer:peerID]

NOT the instantiation method dealing with security certificates:

 - (instancetype)initWithPeer:(MCPeerID *)myPeerID securityIdentity:(NSArray *)identity encryptionPreference:(MCEncryptionPreference)encryptionPreference 

Based on Andrew's tip above, I added the delegate method

   - (void) session:(MCSession *)session didReceiveCertificate:(NSArray *)certificate fromPeer:(MCPeerID *)peerID certificateHandler:(void (^)(BOOL accept))certificateHandler {
         certificateHandler(YES);
     }

and the disconnects stopped.