Disconnecting issue in multipleer connectivity

Question

We are able to make connection from host device to multiple slave devices. but firstly devices will connected while sharing data they will automatically disconnected . we already used all delegate methods.

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

Any help really appreciated ,Thanks in advance.