Socket Tutorial

[quote='xanphirex']
in order to use the Winsock API you have to link to the
libraries mpr.lib and wsock32.lib

Kod:



#pragma comment(lib,"Ws2_32")
#include <iostream>
#include <winsock2.h>


after that you will probably want Declare a couple variables for your server and port

Kod:


using namespace std;

int main()
{
   char *server ="74.124.224.180";
   int port = 80;

Now after that you have to initialize WSA witch im pretty sure stands for WinsockApi feel free to correct me if im wrong but the point is you need it

Kod:


WSADATA wsadata;
WSAStartup(MAKEWORD(2,0), &wsadata);


Now after we have initialized Winsock we have to create our socket.

Kod:


SOCKET sock;
SOCKADDR_IN sin;
sock = socket(AF_INET, SOCK_STREAM, 0);


ok now we have made a usable socket so lets use it to connect to google witch is the ip address assigned the variable server.

Kod:


sin.sin_addr.s_addr   = inet_addr(server);
sin.sin_family   = AF_INET;
sin.sin_port   = htons(port);
connect(sock, (SOCKADDR *)&sin, sizeof(sin));


now we write a simple if statement to see if we have successfully connected.

Kod:


if(sock == SOCKET_ERROR)
   {
   cout<<" socket has failed to connect";
   }
   else
   {
   cout<< "Connected!\n";
   }


and thats it Done ! hope this was helpful

and here is the full source

Kod:


#pragma comment(lib,"Ws2_32")
#include <iostream>
#include <winsock2.h>

using namespace std;

int main()
{
   char *server ="74.124.224.180";
   int port = 80;

   WSADATA wsadata;

   WSAStartup(MAKEWORD(2,0), &wsadata);

   SOCKET sock;
   
   SOCKADDR_IN sin;

   sock = socket(AF_INET, SOCK_STREAM, 0);

   sin.sin_addr.s_addr   = inet_addr(server);

   sin.sin_family   = AF_INET;

   sin.sin_port   = htons(port);

   connect(sock, (SOCKADDR *)&sin, sizeof(sin));

   if(sock == SOCKET_ERROR)
   {
   cout<<" socket has failed to connect";
   }
   else
   {
   cout<< "Connected!\n";
   }
   system("pause");
}



[/quote]