C# program to create a client program

Program:

The source code to create a socket client program is given below. The given program is compiled and executed successfully on Microsoft Visual Studio.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Net;
using System.Text;
using System.Net.Sockets;

class SocketClient
{
    static void Main(string[] args)
    {
            TcpClient client = new TcpClient();
            ASCIIEncoding encoding = new ASCIIEncoding();
            Stream stream;    
            string sendStr = "Hello";

            int recvLen = 0;
            byte[] sendByteArray;
            byte[] recvByteArray = new byte[256];

            Console.WriteLine("Connecting.....");
            client.Connect("127.0.0.1", 15001);
            
            Console.WriteLine("Connected to server");
            stream = client.GetStream();

            sendByteArray = encoding.GetBytes(sendStr);
    
            stream.Write(sendByteArray, 0, sendByteArray.Length);
            Console.WriteLine("Data send...");

            recvLen = stream.Read(recvByteArray, 0, 100);
            for (int i = 0; i < recvLen; i++)
                Console.Write(Convert.ToChar(recvByteArray[i]));
            client.Close();

            Console.WriteLine();
    }
}

Output:

Connecting.....
Connected to server
Data send...
data received
Press any key to continue . . .

Explanation:

In the above program, we created a socket client program, that will connect to the socket server using the Hercules tool on localhost with port 15001, and then we can send and receive data over the network.

Here, we can replace the localhost IP address with a specific IP address.