public void Join(uint hostId)
{
var encrypted = _server.Configuration.EnableP2PEncryptedMessaging;
Crypt crypt = null;
if (encrypted)
{
crypt = new Crypt(_server.Configuration.EncryptedMessageKeyLength,
_server.Configuration.FastEncryptedMessageKeyLength);
}
var session = _server.Sessions[hostId];
var remotePeer = new RemotePeer(this, session, crypt);
if (!_members.TryAdd(hostId, remotePeer))
{
throw new ProudException($"Member {hostId} is already in P2PGroup {HostId}");
}
session.P2PGroup = this;
if (encrypted)
{
session.SendAsync(new P2PGroup_MemberJoinMessage(HostId, hostId, 0, crypt.AES.Key, crypt.RC4.Key, AllowDirectP2P));
}
else
{
session.SendAsync(new P2PGroup_MemberJoin_UnencryptedMessage(HostId, hostId, 0, AllowDirectP2P));
}
foreach (var member in _members.Values.Where(member => member.HostId != hostId).Cast <RemotePeer>())
{
var memberSession = _server.Sessions[member.HostId];
var stateA = new P2PConnectionState(member);
var stateB = new P2PConnectionState(remotePeer);
remotePeer.ConnectionStates[member.HostId] = stateA;
member.ConnectionStates[remotePeer.HostId] = stateB;
if (encrypted)
{
memberSession.SendAsync(new P2PGroup_MemberJoinMessage(HostId, hostId, stateB.EventId, crypt.AES.Key, crypt.RC4.Key, AllowDirectP2P));
session.SendAsync(new P2PGroup_MemberJoinMessage(HostId, member.HostId, stateA.EventId, crypt.AES.Key, member.Crypt.RC4.Key, AllowDirectP2P));
}
else
{
memberSession.SendAsync(new P2PGroup_MemberJoin_UnencryptedMessage(HostId, hostId, stateB.EventId, AllowDirectP2P));
session.SendAsync(new P2PGroup_MemberJoin_UnencryptedMessage(HostId, member.HostId, stateA.EventId, AllowDirectP2P));
}
}
}
public P2PConnectionState(RemotePeer remotePeer)
{
RemotePeer = remotePeer;
EventId = (uint)Guid.NewGuid().GetHashCode();
}