C # Socket network programming based on TCP protocol

Socket Server side:

1. Create a socket

Socket tcpClient = new socket (addressfamily.internetwork, SocketType.Stream, protocoltype.tcp);//three parameters enumerated type (network), respectively Socket type, protocol

2. Binding IP and port number

IPAddress IPAddress = new IPAddress (new byte[] {192,168,119,1});
EndPoint Point =new IPEndPoint (ipaddress,8811);
TCPServer. Bind (point);//Bind method Bind (), IPEndPoint () encapsulates IP and port

3. Start monitoring

Tcpserver.listen (100);//parameter is the maximum number of connections

4. Receiving clients

Socket clientsocket= tcpserver.accept ();

5. Send a message to the client

String message = "Hello welcome!";
byte[] Date = Encoding.UTF8.GetBytes (message);//encoding () transcoding
Clientsocket.send (date);

6. Receiving Client Information

Byte[] Date2=new byte[1024];
int length = clientsocket.receive (Date2);
String message2 = Encoding.UTF8.GetString (date2, 0, length);
Console.WriteLine ("Client sends information over:" +message2);

Code:

Using System;
Using System.Collections.Generic;
Using System.Linq;
Using System.Net;
Using System.Net.Sockets;
Using System.Text;

Namespace Socketserver
{
Class Program
{
static void Main (string[] args)
{

Socket tcpserver =new socket (addressfamily.internetwork,sockettype.stream, protocoltype.tcp);
IPAddress IPAddress = new IPAddress (new byte[] {192,168,191,1});
EndPoint Point =new IPEndPoint (ipaddress,8811);
TCPServer. Bind (point);
Tcpserver.listen (100);
Console.WriteLine ("Start Monitoring");

Socket clientsocket= tcpserver.accept ();
Console.WriteLine ("A Client link");
String message = "Hello welcome!";
byte[] Date = Encoding.UTF8.GetBytes (message);
Clientsocket.send (date);

Byte[] Date2=new byte[1024];
int length = clientsocket.receive (Date2);
String message2 = Encoding.UTF8.GetString (date2, 0, length);
Console.WriteLine ("Client sends information over:" +message2);

Console.readkey ();
}
}
}

Socket Client

1. Create a socket

2. Initiating the request

Tcpclient.connect ();

3. Receiving server-side information

4. Send messages to server side

Code:

Using System;
Using System.Collections.Generic;
Using System.Linq;
Using System.Net;
Using System.Net.Sockets;
Using System.Text;

Namespace Socketclient
{
Class Program
{
static void Main (string[] args)
{
Socket tcpClient = new socket (addressfamily.internetwork, SocketType.Stream, protocoltype.tcp);
IPAddress ipaddress=new IPAddress (New byte[]{192,168,191,1});
EndPoint Point =new IPEndPoint (ipaddress,8811);
Tcpclient.connect (point);
byte[] Date = new byte[1024];
int length= tcpclient.receive (date);
String message = Encoding.UTF8.GetString (date, 0, length);
Console.WriteLine ("Server-side sent message:" +message);

String message2 = Console.ReadLine ();
Tcpclient.send (Encoding.UTF8.GetBytes (message2));
Console.readkey ();
}
}
}

C # Socket network programming based on TCP protocol