如何使用GKSession从服务器向客户端发送请求？

Question

I want to know how can I send request from server to client using GKSession? The reference class for GKSession say the following:

- (void)connectToPeer:(NSString *)peerID withTimeout:(NSTimeInterval)timeout Parameters peerID The string that

identifies the peer to connect to.

timeout The amount of time to wait before canceling the connection attempt.

Discussion

When your application is acting as a client, it calls this method to connect to an available peer it discovered. When your application calls this method, a request is transmitted to the remote peer, who chooses whether to accept or reject the connection request.

What should I use if I am server?

Answer 1

作为服务器，您可以通过以下方式进行客户端连接

peer2peerSession.available = YES;

Answer 2

Here is an example of creating a GKSession instance as a server:

[[GKSession alloc] initWithSessionID:sessionID displayName:@"Chris" sessionMode : GKSessionModeServer];

Here is an example of how to create a GKSession as a client:

[[GKSession alloc] initWithSessionID:sessionID displayName:@"Angel" sessionMode : GKSessionModeClient];

GKSessionModePeer will create a GKSession instance that will both advertise itself as a server, and at the same time look for advertising servers (in other words act as a client searching for servers).

You then need to set a delegate for your GKSession object, after-which the delegate needs to implement the following delegate method:

- (void)session:(GKSession *)session peer:(NSString *)peerID didChangeState : (GKPeerConnectionState)state

Within the above method you will receive messages from the session that a device has become available, became unavailable, connected, etc.

To send a request:

[_session connectToPeer:peerID withTimeout:_session.disconnectTimeout];

To accept a request:

[_session acceptConnectionFromPeer:peerID error:&error];

There is a lot of code involved and the best tutorial for you to understand everything is located here: Simple Card Playing game using GKSession