public static ScanMessage Connect(EndPoint remoteEndPoint, int timeout)
{
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
TcpConnectCall connectCall = new TcpConnectCall(socket);
// Need for controlling timeout period introduces us to asynccallback methods
AsyncCallback connectedCallback = new AsyncCallback(connectCall.ConnectedCallback);
try
{
IAsyncResult result = socket.BeginConnect(remoteEndPoint, connectedCallback, socket);
// wait for timeout to connect
if (result.AsyncWaitHandle.WaitOne(timeout, false) == false)
{
return ScanMessage.Timeout;
}
else
{
Exception connectException = connectCall.connectFailureException;
if (connectException != null)
{
return ScanMessage.PortClosed;
}
return ScanMessage.PortOpened;
}
}
finally
{
socket.Close();
}
}
public static ScanMessage Connect(EndPoint remoteEndPoint, int timeout)
{
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
TcpConnectCall connectCall = new TcpConnectCall(socket);
// Need for controlling timeout period introduces us to asynccallback methods
AsyncCallback connectedCallback = new AsyncCallback(connectCall.ConnectedCallback);
try
{
IAsyncResult result = socket.BeginConnect(remoteEndPoint, connectedCallback, socket);
// wait for timeout to connect
if (result.AsyncWaitHandle.WaitOne(timeout, false) == false)
{
return(ScanMessage.Timeout);
}
else
{
Exception connectException = connectCall.connectFailureException;
if (connectException != null)
{
return(ScanMessage.PortClosed);
}
return(ScanMessage.PortOpened);
}
}
finally
{
socket.Close();
}
}