public async Task <JoinGroupResponse> JoinAsync(IPeer peer, object arg)
{
// check if group is closed
if (isClosed)
{
return(new JoinGroupResponse(GroupId, OperationCode, JoinGroupResponse.ResultType.Cancelled, string.Format("Group is closed.")));
}
// check if peer has joined
if (peers.ContainsKey(peer.Id))
{
return(new JoinGroupResponse(GroupId, OperationCode, JoinGroupResponse.ResultType.HasJoined, string.Format("Has joined in group")));
}
// check if peer is in queue
if (joinQueuing.Exists(req => req.Peer.Id == peer.Id))
{
return(new JoinGroupResponse(GroupId, OperationCode, JoinGroupResponse.ResultType.InQueue, string.Format("Join request is in queue.")));
}
// check if peer is been handling
if (joinHandling.Exists(req => req.Peer.Id == peer.Id))
{
return(new JoinGroupResponse(GroupId, OperationCode, JoinGroupResponse.ResultType.Handling, string.Format("Join request is handling.")));
}
// add request into queue and waiting result
JoinGroupRequest request = new JoinGroupRequest(GroupId, OperationCode, peer, arg);
joinQueuing.Add(request);
JoinGroupResponse result = await request.Task;
joinHandling.Remove(request); // remove request from handling (because finished)
if (result.type == JoinGroupResponse.ResultType.Accepted)
{
lock (peers) peers.Add(peer.Id, peer);
peer.TrackGroup(this);
try
{
if (OnPeerJoinedEvent != null)
{
OnPeerJoinedEvent.Invoke(peer);
}
}
catch (Exception e)
{
debugger.LogError(e);
}
}
return(result);
}