/// <summary>
/// Releases the Stream's SocketAsyncEventArgs back to the pool,
/// and free's up another slot for a new client to connect
/// </summary>
/// <param name="Stream">The GamespyTcpStream object that is being released.</param>
public void Release(GamespyTcpStream Stream)
{
// If the stream has been released, then we stop here
if (!IsListening || Stream.Released)
{
return;
}
// Make sure the connection is closed properly
if (!Stream.SocketClosed)
{
Stream.Close();
return;
}
// To prevent cross instance releasing
if (!Object.ReferenceEquals(this, Stream.SocketManager))
{
throw new ArgumentException("Cannot pass a GamespyTcpStream belonging to a different TcpSocket than this one.");
}
// If we are still registered for this event, then the EventArgs should
// NEVER be disposed here, or we have an error to fix
if (Stream.DisposedEventArgs)
{
// Log this error
Program.ErrorLog.Write("WARNING: [GamespyTcpSocket.Release] Event Args were disposed imporperly!");
// Dispose old buffer tokens
BufferManager.ReleaseBuffer(Stream.ReadEventArgs);
BufferManager.ReleaseBuffer(Stream.WriteEventArgs);
// Create new Read Event Args
SocketAsyncEventArgs SockArgR = new SocketAsyncEventArgs();
BufferManager.AssignBuffer(SockArgR);
SocketReadWritePool.Push(SockArgR);
// Create new Write Event Args
SocketAsyncEventArgs SockArgW = new SocketAsyncEventArgs();
BufferManager.AssignBuffer(SockArgW);
SocketReadWritePool.Push(SockArgW);
}
else
{
// Set null's
Stream.ReadEventArgs.AcceptSocket = null;
Stream.WriteEventArgs.AcceptSocket = null;
// Get our ReadWrite AsyncEvent object back
SocketReadWritePool.Push(Stream.ReadEventArgs);
SocketReadWritePool.Push(Stream.WriteEventArgs);
}
// Now that we have another set of AsyncEventArgs, we can
// release this users Semephore lock, allowing another connection
MaxConnectionsEnforcer.Release();
}
/// <summary>
/// Creates a new UDP socket for handling Gamespy Protocol
/// </summary>
/// <param name="Port">The port this socket will be bound to</param>
/// <param name="MaxConnections">The maximum number of concurrent connections</param>
public GamespyUdpSocket(int Port, int MaxConnections)
{
// Create our Socket
this.Port = Port;
Listener = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp)
{
SendTimeout = 5000, // We have a limited pool, so we dont want to be locked often
SendBufferSize = BufferSizePerEvent,
ReceiveBufferSize = BufferSizePerEvent
};
// Bind to our port
Listener.Bind(new IPEndPoint(IPAddress.Any, Port));
// Set the rest of our internals
MaxNumConnections = MaxConnections;
MaxConnectionsEnforcer = new SemaphoreSlim(MaxNumConnections, MaxNumConnections);
SocketReadWritePool = new SocketAsyncEventArgsPool(MaxNumConnections);
// Create our Buffer Manager for IO operations.
BufferManager = new BufferManager(MaxNumConnections, BufferSizePerEvent);
// Assign our Connection IO SocketAsyncEventArgs object instances
for (int i = 0; i < MaxNumConnections; i++)
{
SocketAsyncEventArgs SockArg = new SocketAsyncEventArgs();
SockArg.Completed += IOComplete;
BufferManager.AssignBuffer(SockArg);
SocketReadWritePool.Push(SockArg);
}
// set public internals
IsRunning = true;
IsDisposed = false;
}
/// <summary>
/// Creates a new TCP socket for handling Gamespy Protocol
/// </summary>
/// <param name="Port">The port this socket will be bound to</param>
/// <param name="MaxConnections">The maximum number of concurrent connections</param>
public GamespyTcpSocket(int Port, int MaxConnections)
{
// Create our Socket
Listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
// Set Socket options
Listener.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.DontLinger, true);
Listener.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Linger, false);
Listener.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, true);
// Bind to our port
Listener.Bind(new IPEndPoint(IPAddress.Any, Port));
Listener.Listen(25);
// Set the rest of our internals
MaxNumConnections = MaxConnections;
MaxConnectionsEnforcer = new SemaphoreSlim(MaxNumConnections, MaxNumConnections);
SocketAcceptPool = new SocketAsyncEventArgsPool(ConcurrentAcceptPoolSize);
SocketReadWritePool = new SocketAsyncEventArgsPool(MaxNumConnections);
// Create our Buffer Manager for IO operations.
// Always allocate double space, one for recieving, and another for sending
BufferManager = new BufferManager(MaxNumConnections * 2, BufferSizePerEventArg);
// Assign our Connection Accept SocketAsyncEventArgs object instances
for (int i = 0; i < ConcurrentAcceptPoolSize; i++)
{
SocketAsyncEventArgs SockArg = new SocketAsyncEventArgs();
SockArg.Completed += (s, e) => PrepareAccept(e);
// Do NOT assign buffer space for Accept operations!
// AcceptAsync does not take require a parameter for buffer size.
SocketAcceptPool.Push(SockArg);
}
// Assign our Connection IO SocketAsyncEventArgs object instances
for (int i = 0; i < MaxNumConnections * 2; i++)
{
SocketAsyncEventArgs SockArg = new SocketAsyncEventArgs();
BufferManager.AssignBuffer(SockArg);
SocketReadWritePool.Push(SockArg);
}
// set public internals
IsListening = true;
IgnoreNewConnections = false;
IsDisposed = false;
}
public TCPServer(string serverName, IPEndPoint bindTo, int MaxConnections)
{
ServerName = "[" + serverName + "]";
// Create our Socket
Listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
// Set Socket options
Listener.LingerState = new LingerOption(enable: false, seconds: 0);
Listener.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, true);
// Bind to our port
Listener.Bind(bindTo);
Listener.Listen(25);
// Set the rest of our internals
MaxNumConnections = MaxConnections;
MaxConnectionsEnforcer = new SemaphoreSlim(MaxNumConnections, MaxNumConnections);
SocketAcceptPool = new SocketAsyncEventArgsPool(ConcurrentAcceptPoolSize);
SocketReadWritePool = new SocketAsyncEventArgsPool(MaxNumConnections * 2);
// Create our Buffer Manager for IO operations.
// Always allocate double space, one for recieving, and another for sending
BufferManager = new BufferManager(MaxNumConnections * 2, BufferSizePerOperation);
// Assign our Connection Accept SocketAsyncEventArgs object instances
for (int i = 0; i < ConcurrentAcceptPoolSize; i++)
{
SocketAsyncEventArgs SockArg = new SocketAsyncEventArgs();
SockArg.Completed += (s, e) => PrepareAccept(e);
// Do NOT assign buffer space for Accept operations!
SocketAcceptPool.Push(SockArg);
}
// Assign our Connection IO SocketAsyncEventArgs object instances
for (int i = 0; i < MaxNumConnections * 2; i++)
{
SocketAsyncEventArgs SockArg = new SocketAsyncEventArgs();
BufferManager.AssignBuffer(SockArg);
SocketReadWritePool.Push(SockArg);
}
// set public internals
IsListening = true;
}