private static void acceptConnection(Socket clientSocket)
{
IPEndPoint clientEndpoint = (IPEndPoint)clientSocket.RemoteEndPoint;
// Add timeouts and set socket options
//clientSocket.ReceiveTimeout = 5000;
//clientSocket.SendTimeout = 5000;
clientSocket.LingerState = new LingerOption(true, 3);
clientSocket.NoDelay = true;
clientSocket.Blocking = true;
if (!Node.isAcceptingConnections())
{
Thread.Sleep(100); // wait a bit for check connectivity purposes
clientSocket.Send(CoreProtocolMessage.prepareProtocolMessage(ProtocolMessageCode.bye, new byte[1]));
clientSocket.Shutdown(SocketShutdown.Both);
clientSocket.Disconnect(true);
return;
}
lastIncomingConnectionTime = DateTime.UtcNow;
connectable = true;
// Setup the remote endpoint
RemoteEndpoint remoteEndpoint = new RemoteEndpoint();
lock (connectedClients)
{
if (connectedClients.Count + 1 > CoreConfig.maximumServerMasterNodes)
{
Logging.warn(string.Format("Maximum number of connected clients reached. Disconnecting client: {0}:{1}",
clientEndpoint.Address.ToString(), clientEndpoint.Port));
clientSocket.Send(CoreProtocolMessage.prepareProtocolMessage(ProtocolMessageCode.bye, new byte[1]));
clientSocket.Shutdown(SocketShutdown.Both);
clientSocket.Disconnect(true);
return;
}
var existing_clients = connectedClients.Where(re => re.remoteIP.Address == clientEndpoint.Address);
if (existing_clients.Count() > 0)
{
Logging.warn(String.Format("Client {0}:{1} already connected as {2}.",
clientEndpoint.Address.ToString(), clientEndpoint.Port, existing_clients.First().ToString()));
clientSocket.Send(CoreProtocolMessage.prepareProtocolMessage(ProtocolMessageCode.bye, new byte[1]));
clientSocket.Shutdown(SocketShutdown.Both);
clientSocket.Disconnect(true);
return;
}
connectedClients.Add(remoteEndpoint);
Logging.info(String.Format("Client connection accepted: {0} | #{1}/{2}", clientEndpoint.ToString(), connectedClients.Count + 1, CoreConfig.maximumServerMasterNodes));
remoteEndpoint.start(clientSocket);
}
}