protected override void SocketEventArgsCompleted(object sender, SocketAsyncEventArgs e)
{
if (e.LastOperation == SocketAsyncOperation.Connect)
{
ProcessConnect(sender as Socket, null, e);
return;
}
ProcessReceive(e);
}
protected override void OnGetSocket(SocketAsyncEventArgs e)
{
if (Buffer.Array == null)
Buffer = new ArraySegment<byte>(new byte[ReceiveBufferSize], 0, ReceiveBufferSize);
e.SetBuffer(Buffer.Array, Buffer.Offset, Buffer.Count);
if (m_SocketEventArgs != null)
{
m_SocketEventArgs.Dispose();
}
m_SocketEventArgs = e;
OnConnected();
StartReceive();
}
private void ProcessReceive(SocketAsyncEventArgs e)
{
if (e.SocketError != SocketError.Success)
{
if (EnsureSocketClosed())
OnClosed();
if (!IsIgnorableSocketError((int)e.SocketError))
OnError(new SocketException((int)e.SocketError));
return;
}
if (e.BytesTransferred == 0)
{
if (EnsureSocketClosed())
OnClosed();
return;
}
OnDataReceived(e.Buffer, e.Offset, e.BytesTransferred);
StartReceive();
}
void Sending_Completed(object sender, SocketAsyncEventArgs e)
{
if (e.SocketError != SocketError.Success || e.BytesTransferred == 0)
{
if (EnsureSocketClosed())
OnClosed();
if (e.SocketError != SocketError.Success && !IsIgnorableSocketError((int)e.SocketError))
OnError(new SocketException((int)e.SocketError));
return;
}
OnSendingCompleted();
}
protected override void SendInternal(PosList<ArraySegment<byte>> items)
{
if (m_SocketEventArgsSend == null)
{
m_SocketEventArgsSend = new SocketAsyncEventArgs();
m_SocketEventArgsSend.Completed += new EventHandler<SocketAsyncEventArgs>(Sending_Completed);
}
bool raiseEvent;
try
{
if (items.Count > 1)
{
if (m_SocketEventArgsSend.Buffer != null)
m_SocketEventArgsSend.SetBuffer(null, 0, 0);
m_SocketEventArgsSend.BufferList = items;
}
else
{
var currentItem = items[0];
try
{
if (m_SocketEventArgsSend.BufferList != null)
m_SocketEventArgsSend.BufferList = null;
}
catch//a strange NullReference exception
{
}
m_SocketEventArgsSend.SetBuffer(currentItem.Array, 0, currentItem.Count);
}
raiseEvent = Client.SendAsync(m_SocketEventArgsSend);
}
catch (SocketException exc)
{
if (EnsureSocketClosed() && !IsIgnorableSocketError(exc.ErrorCode))
OnError(exc);
return;
}
catch (Exception e)
{
if (EnsureSocketClosed() && IsIgnorableException(e))
OnError(e);
return;
}
if (!raiseEvent)
Sending_Completed(Client, m_SocketEventArgsSend);
}
