TCP/IP клиент и сервер

# include <sys/types.h>
# include <iostream>
# include <winsock2.h>
# include <stdlib.h>
 
# pragma comment (lib, "ws2_32.lib")
 
using namespace std;
 
int main (int argc, char * argv)
{
    cout << "Server is running";
 
    char ds [51];
 
    SOCKET s1 = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
 
    struct sockaddr_in loc;
    loc.sin_family = AF_INET;
    loc.sin_port = htons (5050);
    loc.sin_addr.s_addr = inet_addr ("127.0.0.1");
    
    int c = bind (s1, (sockaddr*)&loc, sizeof (loc)< 0);
 
    int r = listen (s1, 5);
 
    int d = accept (s1, (sockaddr*)&loc, NULL);
 
    while (1)
    {
        int rc = recv (s1, ds, 50, 0);
 
        if (d < 0)
        {
            cout << "Error";
            break;
        }
        
        else
        {
            cout << ds << "\n";
        }
 
        closesocket (s1);
    }
    
    return 0;
}

# include <WinSock2.h>
# include <iostream>
# include <string>
# include <stdlib.h>
 
# pragma comment (lib, "ws2_32.lib")
 
using namespace std;
 
int main (int argc, char * argv)
{
    cout << "Klient running";
 
    char mes [30] = "Ok!";
    
    SOCKET s = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
 
    struct sockaddr_in serv;
 
    serv.sin_family = AF_INET;
    serv.sin_port = htons (5050);
    serv.sin_addr.s_addr = inet_addr ("127.0.0.1");
 
    int j = connect (s, (struct sockaddr *) & serv, NULL);
 
    int h = send (s, mes, NULL, NULL); 
 
    Sleep (5000);
 
}