/// <summary>
/// Send a packet to only one player
/// </summary>
private void SendToOneClient(int playerId, NetworkCommand cmd, int int1, int int2, string message)
{
try
{
// Send back to all clients, but only the playerId will process it (TODO: may be improved)
NetworkData backData = new NetworkData(playerId, cmd, int1, int2, message);
byte[] d = backData.ToByte();
multicaster.Send(d, d.Length, remoteIpEP);
}
catch { }
}
/// <summary>
/// Send a packet to all players
/// </summary>
private void SendMulticast(NetworkCommand cmd, int int1, int int2, string message)
{
try
{
// Send back to all clients
NetworkData backData = new NetworkData(0, cmd, int1, int2, message);
byte[] d = backData.ToByte();
multicaster.Send(d, d.Length, remoteIpEP);
}
catch { }
}
/// <summary>
/// Active waiting listening for incoming packet
/// </summary>
private void Listening()
{
UdpClient listener = null; // Listening socket
IPEndPoint localIpEP = null; // Listening IP
// Secure creation of the socket
try
{
listener = new UdpClient();
listener.ExclusiveAddressUse = false;
localIpEP = new IPEndPoint(IPAddress.Any, portListener);
listener.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
listener.ExclusiveAddressUse = false;
listener.Client.Bind(localIpEP);
IPAddress multicastAddress = IPAddress.Parse("239.0.0.222");
listener.JoinMulticastGroup(multicastAddress);
}
catch
{
Console.WriteLine("[ERROR] Can't connect to UDP port" + portListener + ". Check your network settings.");
return;
}
listener.Client.ReceiveTimeout = 1000;
// Perpetual waiting for packet
while (isRunning)
{
try
{
byte[] packet = listener.Receive(ref localIpEP);
NetworkData data = new NetworkData(localIpEP, packet);
if (data.PlayerId == 0 || data.PlayerId == LocalPlayerId || LocalPlayerId < 0) // Block if not wanted
new Thread(new ParameterizedThreadStart(TreatPacket)).Start(data);
}
catch
{
}
}
listener.Close();
}
/// <summary>
/// Méthode qui écoute le réseau en permance en quête d'un message UDP sur le port 1523.
/// </summary>
private void Listening()
{
// Server socket creation
UdpClient server = null;
bool error = false;
int attempts = 0;
// Try 3 times before throwing error
do
{
try
{
server = new UdpClient(portServer);
}
catch
{
error = true;
attempts++;
Thread.Sleep(400);
}
} while (error && attempts < 4);
// Impossible to connect
if (server == null)
{
End();
Console.WriteLine("[ERROR] Can't start server on port " + portServer + ". Check your network settings.");
return;
}
server.Client.ReceiveTimeout = 1000;
// Infinite loop waiting for packet
while (isRunning)
{
try
{
IPEndPoint ip = new IPEndPoint(IPAddress.Any, 0);
byte[] packet = server.Receive(ref ip);
NetworkData data = new NetworkData(ip, packet);
new Thread(new ParameterizedThreadStart(TreatPacket)).Start(data);
}
catch (SocketException e)
{
}
}
server.Close();
}
/// <summary>
/// Send a packet to the server
/// </summary>
private void SendPacket(NetworkCommand cmd, int int1, int int2, string message)
{
NetworkData data = new NetworkData(LocalPlayerId, cmd, int1, int2, message);
byte[] packet = data.ToByte();
client.Send(packet, packet.Length);
}