```
public interface GKVoiceChatClient
```
All clients will need to implement this protocol

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`java.lang.String`	`participantID()`	must be sent within some reasonble period of time and should accept at least 512 bytes.
`default void`	`voiceChatServiceDidNotStartWithParticipantIDError(GKVoiceChatService voiceChatService, java.lang.String participantID, NSError error)`
`default void`	`voiceChatServiceDidReceiveInvitationFromParticipantIDCallID(GKVoiceChatService voiceChatService, java.lang.String participantID, long callID)`
`default void`	`voiceChatServiceDidStartWithParticipantID(GKVoiceChatService voiceChatService, java.lang.String participantID)`
`default void`	`voiceChatServiceDidStopWithParticipantIDError(GKVoiceChatService voiceChatService, java.lang.String participantID, NSError error)`
`void`	`voiceChatServiceSendDataToParticipantID(GKVoiceChatService voiceChatService, NSData data, java.lang.String participantID)`	this channel will only be used to setup voice chat, and not to send audio data.
`default void`	`voiceChatServiceSendRealTimeDataToParticipantID(GKVoiceChatService voiceChatService, NSData data, java.lang.String participantID)`	should be sent immediately with no delay on a UDP peer-to-peer connection.

Method Detail

participantID
```
java.lang.String participantID()
```
must be sent within some reasonble period of time and should accept at least 512 bytes.

voiceChatServiceDidNotStartWithParticipantIDError

default void voiceChatServiceDidNotStartWithParticipantIDError(GKVoiceChatService voiceChatService,
                                                               java.lang.String participantID,
                                                               NSError error)

voiceChatServiceDidReceiveInvitationFromParticipantIDCallID

default void voiceChatServiceDidReceiveInvitationFromParticipantIDCallID(GKVoiceChatService voiceChatService,
                                                                         java.lang.String participantID,
                                                                         long callID)

voiceChatServiceDidStartWithParticipantID

default void voiceChatServiceDidStartWithParticipantID(GKVoiceChatService voiceChatService,
                                                       java.lang.String participantID)

voiceChatServiceDidStopWithParticipantIDError

default void voiceChatServiceDidStopWithParticipantIDError(GKVoiceChatService voiceChatService,
                                                           java.lang.String participantID,
                                                           NSError error)

voiceChatServiceSendDataToParticipantID

void voiceChatServiceSendDataToParticipantID(GKVoiceChatService voiceChatService,
                                             NSData data,
                                             java.lang.String participantID)

this channel will only be used to setup voice chat, and not to send audio data. The only requirement is that messages are sent and received within a few (1-2) seconds time.

voiceChatServiceSendRealTimeDataToParticipantID

default void voiceChatServiceSendRealTimeDataToParticipantID(GKVoiceChatService voiceChatService,
                                                             NSData data,
                                                             java.lang.String participantID)

should be sent immediately with no delay on a UDP peer-to-peer connection. If this method is implemented, then the Voice Chat Service will not attempt to set up a peer-to-peer connection. And will rely on this one. To transmit audio.

Interface GKVoiceChatClient