public void RelayTo(short opCode, GcConnection connection)
{
if (!connection.IsConnected)
{
throw new Exception("Cannot relay to a connection which is closed");
}
_relayConnections.TryAdd(opCode, connection);
connection.InterceptIncomingData(data =>
{
var flags = data[0];
// There's no peer id
if ((flags & MessageFlags.PaddedPeerId) <= 0)
{
return(false);
}
var peerId = EndianBitConverter.Little.ToInt32(data, 3);
var peer = connection.GetRelayedPeer(peerId);
// Overide the peerId of the message
// If it's not a virtual peer, but a direct one -
// cleanup the peer id so that direct client doesn't know his id
EndianBitConverter.Little.CopyBytes(peer.IsVirtual ? peer.PeerId : -1, data, 3);
peer.SendRawData(data);
return(true);
});
}
public int GetPeerIdInRelayedServer(GcConnection connection)
{
_relayedPeerIds.TryGetValue(connection, out var result);
// Return -1 instead of 0 for missing result,
// because it's more "meaningful"
return(result == 0 ? -1 : result);
}
/// <summary>
/// For forwarding messages.
/// Saves information that this peer will be represented by a given peerId in a different server
/// </summary>
/// <param name="peerId"></param>
/// <param name="connection"></param>
public void SetPeerIdInRelayedServer(int peerId, GcConnection connection)
{
_relayedPeerIds.TryAdd(connection, peerId);
}