how to do tcp/ip programming with c#

Question

how you will build tcp/ip connection with c# including normal connecting string

Rajanikant Hawaldar · Answer

Server App using System; using System.Net; using System.Net.Sockets; using System.Text; namespace Server { class Program { const int PORT_NO = 5000; const string SERVER_IP = "127.0.0.1" ; static void Main( string [] args) { //---listen at the specified IP and port no.--- IPAddress localAdd = IPAddress.Parse(SERVER_IP); TcpListener listener = new TcpListener(localAdd, PORT_NO); Console.WriteLine( "Listening..." ); listener.Start(); //---incoming client connected--- TcpClient client = listener.AcceptTcpClient(); //---get the incoming data through a network stream--- NetworkStream nwStream = client.GetStream(); byte [] buffer = new byte [client.ReceiveBufferSize]; //---read incoming stream--- int bytesRead = nwStream.Read(buffer, 0, client.ReceiveBufferSize); //---convert the data received into a string--- string dataReceived = Encoding.ASCII.GetString(buffer, 0, bytesRead); Console.WriteLine( "Received : " + dataReceived); //---write back the text to the client--- Console.WriteLine( "Sending back : " + dataReceived); nwStream.Write(buffer, 0, bytesRead); client.Close(); listener.Stop(); Console.ReadLine(); } } } Client App using System; using System.Net.Sockets; using System.Text; namespace Client { class Program { const int PORT_NO = 5000; const string SERVER_IP = "127.0.0.1" ; static void Main( string [] args) { //---data to send to the server--- string textToSend = DateTime.Now.ToString(); //---create a TCPClient object at the IP and port no.--- TcpClient client = new TcpClient(SERVER_IP, PORT_NO); NetworkStream nwStream = client.GetStream(); byte [] bytesToSend = ASCIIEncoding.ASCII.GetBytes(textToSend); //---send the text--- Console.WriteLine( "Sending : " + textToSend); nwStream.Write(bytesToSend, 0, bytesToSend.Length); //---read back the text--- byte [] bytesToRead = new byte [client.ReceiveBufferSize]; int bytesRead = nwStream.Read(bytesToRead, 0, client.ReceiveBufferSize); Console.WriteLine( "Received : " + Encoding.ASCII.GetString(bytesToRead, 0, bytesRead)); Console.ReadLine(); client.Close(); } } } https://www.c-sharpcorner.com/article/socket-programming-in-C-Sharp/ https://www.c-sharpcorner.com/UploadFile/ajyadav123/applied-C-Sharp-net-socket-programming/

Satya Karki · Answer

Check these sites. It may help you. https://www.c-sharpcorner.com/article/socket-programming-in-C-Sharp/ https://www.codeproject.com/Articles/884583/Advanced-TCP-Socket-Programming-with-NET https://stackoverflow.com/questions/27539938/tcp-ip-client-socket-program-in-c-net-using-ip-address-and-port-number

Arijeet Ghosh · Answer

sir server app is okbut regarding client app it's tcpclient. why not tcpserver