Open Radar

 
Summary:
When leaving and re-joining a multipeer session with more than two peers, the reconnecting peer only gets connected to the peer it sent the invitation to. 

The session's delegate does get a `session:peer:didChangeState:` call with `MCSessionStateConnected` for the peer that doesn't get connected, but the session's `connectedPeers` array doesn't contain that peer and any attempts to communicate with it fails. E.g. opening a stream fails with `Error Domain=MCSession Code=0 "Peer not connected" UserInfo=0x14658900 {NSLocalizedDescription=Peer not connected}`.

Steps to Reproduce:
Run the attached project on three devices, subsequently called devices A, B and C.

* Device A invites devices B and C to the session by pressing the "Connect" button and sending invitations via the peer browser.
* Devices B and C accepts the invitation
* Session with all three devices connected is established, everything works
* Device A leaves the session by pressing the "Disconnect" button
* Device B invites device A back into the session using the "Connect" button
* Device A accepts the invitation

Expected Results:
A session with peers A, B and C gets established

Actual Results:
Device A and B are connected and can communicate but there is no communication between devices A and C possible. The connection between devices B and C is not affected.

Both devices A and C gets a `session:peer:didChangeState:` method call with `MCSessionStateConnected` in the session delegate, but the session's `connectedPeers` array doesn't contain the peer the delegate was notified of being connected. Also, attempts to communicate with the supposedly connected peers fails.

Version:
iOS 7.1.1, iOS 8.0 beta2

Notes:


Configuration:
iPhone 5, iPad mini retina, iPhone Simulator

Attachments:
'multipeer-reconnect-test.zip' was successfully uploaded.