no you're not reading it correctly. You appear, if I'm reading your mail
properly, to think that the GKVoiceChatService exists and makes a
connection for you and you can call the
voiceChatService:sendData:toParticipantID:
and at the other end the
receivedData:fromParticipantID:
will be called and you can use it.
methods. But it's the other way around, the
voiceChatService:sendData:toParticipantID: is a GKVoiceChatClient
protocol method (which is why you can't find it looking in the service
documentation). That method you need to write yourself and it has to
send the data to the participantID which means whatever your client
(which you write) means it to mean. You then have to make your own data
connection to that participant (however you wish to do that) and send
the data and when the other end receives it, your client calls
receivedData:fromParticipantID: (which is a GKVoiceChatService method)
to tell it a client wants to connect. It then transfers voice data
behind the scenes using the information it just transferred (or if it
can't it calls that other realtime method).
So no this thing doesn't provide a free magic connection you can piggy
back on, it's a layer built on top of a connection you need to provide
which then adds a voice service on top of it. So you still need to write
the bit which finds another phone and sends data to and from it.
If you just want local bluetooth connections you can take advantage of
the Peer-to-peer networking which gives you a GKSession with send and
receive methods, but you want internet I think, so you can't.
(The documentation about configuring peer pickers to use the internet
pretty much baffles me, but then I don't know a lot about bonjour.)
James Lin wrote:
Hi all...
Continuing on with my network between 2 iPhone quest...
Thanks to Luke who made me aware of Game Kit and GKVoiceChat.
As I am new to network programming, I need you to help me make sense of
the documentation.
If I am reading the GKVoiceChat documentation correctly...GKVoiceChat
works in the following manner:
1. provide each client with an arbitrary participant ID and try to
connect through GKVoiceChatService (is it a server/service provided by
Apple?), and
the service will allow the 2 iPhones to discover each other and make
connection?
2. Session can be created over Bonjour service. Can i create a
"Session" object from the participantID that I provide for the two
iPhones?
3. There is a method called voiceChatService:sendData:toParticipantID:
as part of the protocol.
The documentation says:
Implement the client’s voiceChatService:sendData:toParticipantID: method.
- (void)voiceChatService:(GKVoiceChatService *)voiceChatService
sendData:(NSData
*)data toParticipantID:(NSString *)participantID
{
[session sendData: data toPeer:[NSArray arrayWithObject: participantID]
withDataMode: GKSendDataReliable error: nil];
}
The service calls the client when it needs to send data to other
participants in the chat. Most commonly,
it does this to establish its own real-time connection with other
participants. As both the GKSession
and GKVoiceChatService use an NSData object to hold their data, simply
pass it on to the session.
If the same network is being used to transmit your own information, you
may need to add an identifier
before the packet to differentiate your data from voice chat data.
Does this mean I can also send my own data over the internet through
this service once a voicechat connection is made?
4. Anyone know if sample code is available anywhere on the net for
GKVoiceChat?
5. In the Game Kit Programming Guide documentation, it mentioned two
methods
voiceChatService:sendData:toParticipantID:
voiceChatService:sendRealTimeData:toParticipantID:
However, these two methods are mysteriously missing from the
GKVoiceChatService Class documentation.
Am I missing something?
If I am reading the documentation correctly: does this mean I can use
the GKVoiceChatService that discovered each through
the service and SEND MY OWN DATA between the two iPhones?
If my impressions are correct, this class might be the solution I am
looking for...
Can you please help me confirm?
Thank you in advance...
James_______________________________________________
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