private void Connect()
{
if (_socketState != null)
{
if (_socketState.IsConnected)
{
return;
}
_socketState.Dispose();
}
Logger.Write("Connecting to server...");
Logger.Write(string.Format("Resolving host \"{0}\"...", _host));
IPAddress address = null;
try
{
address = IPAddress.Parse(_host);
}
catch (ArgumentException)
{
}
catch (FormatException)
{
}
if (address == null)
{
IPHostEntry dnsEntry = Dns.GetHostEntry(_host);
foreach (IPAddress ia in dnsEntry.AddressList)
{
if (ia.AddressFamily == AddressFamily.InterNetwork)
{
address = ia;
break;
}
}
}
IPEndPoint endPoint = new IPEndPoint(address, _port);
Logger.Write("Creating socket...");
_socketState = new SocketState();
_socketState.Socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, System.Net.Sockets.ProtocolType.Tcp);
Logger.Write(string.Format("Connecting to \"{0}:{1}\"...", address.ToString(), _port));
_socketState.Socket.BeginConnect(endPoint, ConnectCallback, _socketState);
if (!_socketState.Wait(_connectTimeout))
{
throw new TimeoutException("Connection timed out.");
}
if (_socketState.Exception != null)
{
throw _socketState.Exception;
}
_socketState.IsConnected = true;
Logger.Write("Connection successful.");
}
public TResponse Invoke <TRequest, TResponse>(TRequest request)
where TRequest : class
where TResponse : class
{
Logger.Write(string.Format("Invoking request \"{0}\"...", request.GetType().Name));
if (_isDisposed)
{
throw new ObjectDisposedException(typeof(ThinClient).FullName);
}
TResponse response = null;
lock (_syncLock)
{
try
{
if (_lastRequestType != typeof(TRequest))
{
_sequence++;
}
request.GetType().GetProperty("SessionId").SetValue(request, _sessionId, null);
request.GetType().GetProperty("Sequence").SetValue(request, _sequence, null);
_lastRequestType = typeof(TRequest);
Connect();
XmlSerializer serializer = GetSerializer(typeof(TRequest));
var stream = new MemoryStream(4096);
serializer.Serialize(stream, request);
for (int i = 0; i < EndOfFileLength; i++)
{
stream.WriteByte(0);
}
if (Logger.IsEnabled)
{
string data = Encoding.UTF8.GetString(stream.ToArray(), 0, (int)stream.Length).Replace('\0', '0');
Logger.Write(string.Format("Sending data \"{0}\"...", data));
}
_socketState.Socket.BeginSend(stream.ToArray(), 0, (int)stream.Length, 0, SendCallback, _socketState);
if (!_socketState.Wait(_sendTimeout))
{
throw new TimeoutException("Send timed out.");
}
if (_socketState.Exception != null)
{
throw _socketState.Exception;
}
Logger.Write("Receiving response...");
response = ReceiveResponse <TResponse>();
_sequence++;
Logger.Write("Request completed successfully.");
return(response);
}
catch (Exception ex)
{
Logger.Write(ex.ToString());
if (_socketState != null)
{
_socketState.Dispose();
}
throw;
}
}
}