Game Center multiplayer matchmaking issue

cocos2d-x C++
#1

I am trying to create a real time multiplayer game using Game Center. For matchmaking, I am using programmatic approach by using the following code:

    [[GKMatchmaker sharedMatchmaker] findMatchForRequest:request withCompletionHandler:^(GKMatch *match, NSError *error) {
            if (error)
            {
                // Process the error.
                NSLog(@" error => %@ ", [error userInfo] );
                
            }
            else if (match != nil)
            {
                NSLog(@"Match Found _-----------");
                currentMatch = match;
                match.delegate = self;
                
                NSLog(@"Expected player count:%ld",match.expectedPlayerCount);
                
                if ( match.expectedPlayerCount == 0)
                {
                    NSLog(@"Ready to start match!");
                   
                }
            }
        }];

Currently, the code generates following error when a match is found:

ABC-mobile[342:26698] [log]  [ERROR] ReXmitCollectionRequest:640 /BuildRoot/Library/Caches/com.apple.xbs/Sources/AVConference/AVConference-1020.31/ICE.subproj/Sources/ICEMessage.c:640:     ReXmit [SNATMAP_REQUEST] (1:0) from [192.168.0.104:16402] to [17.133.234.32:16384] failed (801A0002)
    
ABC-mobile[342:26698] [log]  [ERROR] -[GKConnectionInternal internal_setRemoteConnectionData:fromParticipantID:pendingConnectionPIDList:]:1041 GCKSessionPrepareConnection FAILED(80150016)

I am using Cocos2D-X game engine and I am calling this method from a C++ function.

I would appreciate any suggestions and thoughts on this topic. Thank you.

#2

Solution:

Use pure Objective-C code (file should have .m extension instead of .mm ). Write a wrapper class in Objective-C++ (file with .mm extension) to call these Game Center methods.