New Instance of TCPClient Exception

Question

I asked a similar question to this a few days ago. At that point, I was trying to use sockets. Currently, I am using TCPClient to do the dirty socket work for me. I am using Windows 7 and Visual studios 2013 Professional.

Original and Current Project Outline:

I need to create an application (WinForms using C#) that allows the user to connect to a device (a piece of hardware that will be sent arguments/commands) via wifi (wifi is end goal but I am settling at the moment for any connection) and then send messages to said device. I know some C# and some sockets/IP stuff, but not sockets/IP using C#. The visual, GUI side of the program is not what I am struggling with. I cannot seem to get the TCPClient up and running and make any real connection. I keep getting the "An Invalid Argument was Supplied" exception.

Any tips on this particular issue or help with C# networking/TCPClient/etc. are welcome.

I have tried to create a new TcpClient each of the following ways without success:

TcpClient tcpClient = new TcpClient();
TcpClient tcpClient = new TcpClient(family); // family is a created AddressFamily
TcpClient tcpClient = new TcpClient(clientIPAddress, clientPortNumber);
TcpClient tcpClient = new TcpClient(remoteEP); // remoteEP is a remote end point created by me
TcpClient tcpClient = new TcpClient(localEP); // localEP is a local end point

Each of these is one of the constructors within the TCPClient class. Each of these gives me the following exception: An Invalid Argument was Supplied

Stack Trace:

at System.Net.Sockets.Socket..ctor(AddressFamily addressFamily, SocketType socketType, ProtocolType protocolType)\r\n at System.Net.Sockets.TcpClient.initialize()\r\n at System.Net.Sockets.TcpClient..ctor(AddressFamily family)\r\n at System.Net.Sockets.TcpClient..ctor()\r\n at ConnectLite.ConnectLite.MakeConnection() in h:\Howard\Projects\ConnectLite\ConnectLite\Form1.cs:line 120

I do have all of the necessary imports and usings.

This problem gets strange when I try to run the application on a different computer. On separate computers, whether it be running the application without Visual Studios from the debug file, or running it on a different computer using Visual Studios 2013, the application takes me further than the exception and the exception is never thrown.

I am simply trying to use TCPClient to do some simple message sending. The TCPClient, however, is preventing me from doing that.

When I had been using sockets, it was throwing the same exception when creating a new socket.

Socket clientSocket =
new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

Do any of you have any insights on this matter?

To simplify, I have put the pertinent pieces of code into a console app so as to be easily read.

Simple block of code with issue:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleTestConnectLite
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                TcpClient tcpClient = new TcpClient();
            }
            catch (SocketException e)
            {
                Console.WriteLine(e.Message);
                Console.WriteLine("Error: " + e.StackTrace);
                Console.WriteLine(e.Message + ". Error Code: " + e.ErrorCode.ToString());
            }
        }
    }
}

Console Output:

An invalid argument was supplied
Error:    at System.Net.Sockets.Socket..ctor(AddressFamily addressFamily, Socket
Type socketType, ProtocolType protocolType)
   at System.Net.Sockets.TcpClient.initialize()
   at System.Net.Sockets.TcpClient..ctor(AddressFamily family)
   at System.Net.Sockets.TcpClient..ctor()
   at ConsoleTestConnectLite.Program.Main(String[] args) in h:\Howard\Projects\ConsoleTestConnectLite\ConsoleTestConnectLite\Program.cs:line 17
An invalid argument was supplied. Error Code: 10022
Press any key to continue . . .

Answer 1

You will get that error if your codes are placed on a network drive. Moving your code to local machine will solve the problem.