private void HandleGameServerHandshakeRequestTCP(GameServerHandshakeRequestTCP mess)
{
var net = Game.NetworkEngine;
string clientDiff, serverDiff;
int diffIndex;
bool differ = MiscHelper.FirstDifference(mess.CanonicalStrings, CanonicalString.CanonicalForms, out clientDiff, out serverDiff, out diffIndex);
var connection = net.GetGameClientConnection(mess.ConnectionID);
if (differ)
{
var mismatchInfo = string.Format("First mismatch is index: {0}, client: {1}, server: {2}",
diffIndex, clientDiff ?? "<missing>", serverDiff ?? "<missing>");
var extraInfo = diffIndex == 0 ? "" : string.Format(", client previous: {0}, server previous: {1}",
mess.CanonicalStrings[diffIndex - 1], CanonicalString.CanonicalForms[diffIndex - 1]);
Log.Write("Client's CanonicalStrings don't match ours. " + mismatchInfo + extraInfo);
var reply = new ConnectionClosingMessage { Info = "of version mismatch (canonical strings).\nPlease install the latest version from\nwww.assaultwing.com" };
connection.Send(reply);
net.DropClient(mess.ConnectionID);
}
else
{
connection.ConnectionStatus.ClientKey = mess.GameClientKey;
connection.ConnectionStatus.State = ConnectionUtils.GameClientStatus.StateType.Active;
// Send dummy UDP packets to probable UDP end points of the client to increase
// probability of our NAT forwarding UDP packets from the client to us.
var ping = new PingRequestMessage();
for (int port = NetworkEngine.UDP_CONNECTION_PORT_FIRST; port <= NetworkEngine.UDP_CONNECTION_PORT_LAST; port++)
net.UDPSocket.Send(ping.Serialize, new IPEndPoint(net.GetConnection(mess.ConnectionID).RemoteTCPEndPoint.Address, port));
}
}
public void IncomingConnectionHandlerOnServer(Result<AW2.Net.Connections.Connection> result, Func<bool> allowNewConnection)
{
if (!result.Successful)
Log.Write("Some client failed to connect: " + result.Error);
else if (allowNewConnection())
{
Game.NetworkEngine.GameClientConnections.Add((GameClientConnection)result.Value);
Log.Write("Server obtained {0} from {1}", result.Value.Name, result.Value.RemoteTCPEndPoint);
}
else
{
var mess = new ConnectionClosingMessage { Info = "game server refused joining" };
result.Value.Send(mess);
Log.Write("Server refused connection from " + result.Value.RemoteTCPEndPoint);
}
}
private void HandleConnectionClosingMessage(ConnectionClosingMessage mess)
{
GameServerConnectionClosing(mess.Info);
}
/// <summary>
/// Turns this game server into a standalone game instance and disposes of
/// any connections to game clients.
/// </summary>
public void StopServer()
{
Log.Write("Stopping game server");
MessageHandlers.Clear();
UnregisterServerFromManagementServer();
_connectionAttemptListener.StopListening();
_connectionAttemptListener = null;
var shutdownNotice = new ConnectionClosingMessage { Info = "server shut down" };
foreach (var conn in GameClientConnections) conn.Send(shutdownNotice);
DisposeGameClientConnections();
FlushUnhandledUDPMessages();
}
