private void OnClientSocketReceive(IAsyncResult ar)
{
if (ar != m_currentAsyncResult)
{
// We ignore calls for old sockets which we no longer use
// See: http://rajputyh.blogspot.co.il/2010/04/solve-exception-message-iasyncresult.html
return;
}
ConnectionState state = (ConnectionState)ar.AsyncState;
if (!m_clientSocket.Connected)
{
return;
}
int numberOfBytesReceived = 0;
try
{
numberOfBytesReceived = m_clientSocket.EndReceive(ar);
}
catch (ObjectDisposedException)
{
Log("[ReceiveCallback] EndReceive ObjectDisposedException");
return;
}
catch (SocketException ex)
{
Log("[ReceiveCallback] EndReceive SocketException: " + ex.Message);
return;
}
if (numberOfBytesReceived == 0)
{
m_isConnected = false;
}
else
{
NBTConnectionReceiveBuffer buffer = state.ReceiveBuffer;
buffer.SetNumberOfBytesReceived(numberOfBytesReceived);
ProcessConnectionBuffer(state);
try
{
m_currentAsyncResult = m_clientSocket.BeginReceive(buffer.Buffer, buffer.WriteOffset, buffer.AvailableLength, SocketFlags.None, new AsyncCallback(OnClientSocketReceive), state);
}
catch (ObjectDisposedException)
{
m_isConnected = false;
Log("[ReceiveCallback] BeginReceive ObjectDisposedException");
}
catch (SocketException ex)
{
m_isConnected = false;
Log("[ReceiveCallback] BeginReceive SocketException: " + ex.Message);
}
}
}
private void OnClientSocketReceive(object sender, SocketAsyncEventArgs ar)
{
ConnectionState state = (ConnectionState)ar.UserToken;
if (!m_clientSocket.Connected)
{
return;
}
int numberOfBytesReceived = 0;
try
{
numberOfBytesReceived = ar.BytesTransferred;
}
catch (ObjectDisposedException)
{
Log("[ReceiveCallback] EndReceive ObjectDisposedException");
return;
}
catch (SocketException ex)
{
Log("[ReceiveCallback] EndReceive SocketException: " + ex.Message);
return;
}
if (numberOfBytesReceived == 0)
{
m_isConnected = false;
}
else
{
NBTConnectionReceiveBuffer buffer = state.ReceiveBuffer;
buffer.SetNumberOfBytesReceived(numberOfBytesReceived);
ProcessConnectionBuffer(state);
try
{
SocketAsyncEventArgs args = new SocketAsyncEventArgs();
args.SetBuffer(buffer.Buffer, buffer.WriteOffset, buffer.AvailableLength);
args.Completed += OnClientSocketReceive;
args.UserToken = state;
if (!m_clientSocket.ReceiveAsync(ar))
{
OnClientSocketReceive(sender, ar);
}
}
catch (ObjectDisposedException)
{
m_isConnected = false;
Log("[ReceiveCallback] BeginReceive ObjectDisposedException");
}
catch (SocketException ex)
{
m_isConnected = false;
Log("[ReceiveCallback] BeginReceive SocketException: " + ex.Message);
}
}
}
private void OnClientSocketReceive(IAsyncResult ar)
{
ConnectionState state = (ConnectionState)ar.AsyncState;
Socket clientSocket = state.ClientSocket;
if (!clientSocket.Connected)
{
return;
}
int numberOfBytesReceived = 0;
try
{
numberOfBytesReceived = clientSocket.EndReceive(ar);
}
catch (ArgumentException) // The IAsyncResult object was not returned from the corresponding synchronous method on this class.
{
return;
}
catch (ObjectDisposedException)
{
Log("[ReceiveCallback] EndReceive ObjectDisposedException");
return;
}
catch (SocketException ex)
{
Log("[ReceiveCallback] EndReceive SocketException: " + ex.Message);
return;
}
if (numberOfBytesReceived == 0)
{
m_isConnected = false;
}
else
{
NBTConnectionReceiveBuffer buffer = state.ReceiveBuffer;
buffer.SetNumberOfBytesReceived(numberOfBytesReceived);
ProcessConnectionBuffer(state);
try
{
clientSocket.BeginReceive(buffer.Buffer, buffer.WriteOffset, buffer.AvailableLength, SocketFlags.None, new AsyncCallback(OnClientSocketReceive), state);
}
catch (ObjectDisposedException)
{
m_isConnected = false;
Log("[ReceiveCallback] BeginReceive ObjectDisposedException");
}
catch (SocketException ex)
{
m_isConnected = false;
Log("[ReceiveCallback] BeginReceive SocketException: " + ex.Message);
}
}
}
private void ReceiveCallback(IAsyncResult result)
{
ConnectionState state = (ConnectionState)result.AsyncState;
Socket clientSocket = state.ClientSocket;
if (!m_listening)
{
clientSocket.Close();
return;
}
int numberOfBytesReceived;
try
{
numberOfBytesReceived = clientSocket.EndReceive(result);
}
catch (ObjectDisposedException)
{
m_connectionManager.ReleaseConnection(state);
return;
}
catch (SocketException)
{
m_connectionManager.ReleaseConnection(state);
return;
}
if (numberOfBytesReceived == 0)
{
// The other side has closed the connection
state.LogToServer(Severity.Debug, "The other side closed the connection");
m_connectionManager.ReleaseConnection(state);
return;
}
NBTConnectionReceiveBuffer receiveBuffer = state.ReceiveBuffer;
receiveBuffer.SetNumberOfBytesReceived(numberOfBytesReceived);
ProcessConnectionBuffer(ref state);
if (clientSocket.Connected)
{
try
{
clientSocket.BeginReceive(state.ReceiveBuffer.Buffer, state.ReceiveBuffer.WriteOffset, state.ReceiveBuffer.AvailableLength, 0, ReceiveCallback, state);
}
catch (ObjectDisposedException)
{
m_connectionManager.ReleaseConnection(state);
}
catch (SocketException)
{
m_connectionManager.ReleaseConnection(state);
}
}
}
private void ReceiveCallback(IAsyncResult result)
{
ConnectionState state = (ConnectionState)result.AsyncState;
Socket clientSocket = state.ClientSocket;
if (!m_listening)
{
clientSocket.Close();
return;
}
int numberOfBytesReceived;
try
{
numberOfBytesReceived = clientSocket.EndReceive(result);
}
catch (ObjectDisposedException)
{
state.LogToServer(Severity.Debug, "The connection was terminated");
m_connectionManager.ReleaseConnection(state);
return;
}
catch (SocketException ex)
{
const int WSAECONNRESET = 10054;
if (ex.ErrorCode == WSAECONNRESET)
{
state.LogToServer(Severity.Debug, "The connection was forcibly closed by the remote host");
}
else
{
state.LogToServer(Severity.Debug, "The connection was terminated, Socket error code: {0}", ex.ErrorCode);
}
m_connectionManager.ReleaseConnection(state);
return;
}
if (numberOfBytesReceived == 0)
{
state.LogToServer(Severity.Debug, "The client closed the connection");
m_connectionManager.ReleaseConnection(state);
return;
}
state.UpdateLastReceiveDT();
NBTConnectionReceiveBuffer receiveBuffer = state.ReceiveBuffer;
receiveBuffer.SetNumberOfBytesReceived(numberOfBytesReceived);
ProcessConnectionBuffer(ref state);
if (clientSocket.Connected)
{
try
{
clientSocket.BeginReceive(state.ReceiveBuffer.Buffer, state.ReceiveBuffer.WriteOffset, state.ReceiveBuffer.AvailableLength, 0, ReceiveCallback, state);
}
catch (ObjectDisposedException)
{
m_connectionManager.ReleaseConnection(state);
}
catch (SocketException)
{
m_connectionManager.ReleaseConnection(state);
}
}
}
private void ReceiveCallback(object sender, SocketAsyncEventArgs result)
{
ConnectionState state = (ConnectionState)result.UserToken;
Socket clientSocket = state.ClientSocket;
if (!m_listening)
{
clientSocket.Dispose();
return;
}
int numberOfBytesReceived;
try
{
numberOfBytesReceived = result.BytesTransferred;
}
catch (ObjectDisposedException)
{
state.LogToServer(Severity.Debug, "The connection was terminated");
m_connectionManager.ReleaseConnection(state);
return;
}
catch (SocketException ex)
{
///const int WSAECONNRESET = 10054;
if (ex.SocketErrorCode == SocketError.ConnectionReset)
{
state.LogToServer(Severity.Debug, "The connection was forcibly closed by the remote host");
}
else
{
state.LogToServer(Severity.Debug, "The connection was terminated, Socket error code: {0}", ex.SocketErrorCode);
}
m_connectionManager.ReleaseConnection(state);
return;
}
if (numberOfBytesReceived == 0)
{
state.LogToServer(Severity.Debug, "The client closed the connection");
m_connectionManager.ReleaseConnection(state);
return;
}
state.UpdateLastReceiveDT();
NBTConnectionReceiveBuffer receiveBuffer = state.ReceiveBuffer;
receiveBuffer.SetNumberOfBytesReceived(numberOfBytesReceived);
ProcessConnectionBuffer(ref state);
if (clientSocket.Connected)
{
try
{
SocketAsyncEventArgs args = new SocketAsyncEventArgs();
args.SetBuffer(state.ReceiveBuffer.Buffer, state.ReceiveBuffer.WriteOffset, state.ReceiveBuffer.AvailableLength);
args.Completed += ReceiveCallback;
args.UserToken = state;
//m_currentAsyncResult =
if (!clientSocket.ReceiveAsync(args))
{
ReceiveCallback(sender, args);
}
}
catch (ObjectDisposedException)
{
m_connectionManager.ReleaseConnection(state);
}
catch (SocketException)
{
m_connectionManager.ReleaseConnection(state);
}
}
}