Tcp ip клиент-сервер C++ сервер выводит мусор

# 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];
 
    WSADATA ws;
    if (WSAStartup (MAKEWORD (2, 2), &ws))
    {
           cout << "\nLibray not load\n";
           return 1;
    }
    
    SOCKET s1 = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
 
    struct sockaddr_in loc;
    int lc = sizeof (loc);
    loc.sin_family = AF_INET;
    loc.sin_port = htons (5050);
    loc.sin_addr.s_addr = inet_addr ("127.0.0.1");
    
    bind (s1, (struct sockaddr*)&loc, sizeof (loc));
 
    listen (s1, 5);
 
    SOCKET d = accept (s1, (struct sockaddr*)&loc, &lc);
 
    while (1)
    {
        int rc = recv (s1, ds, sizeof (ds), 0);
 
        if (d < 0)
        {
            cout << "\nError\n";
            Sleep (100);
        }
        
        else
        {
            cout << ds << endl;
 
            closesocket (s1);
            break;
        }
    }
    system ("pause");
    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 [51];
 
    cout << "\n Write message \n";
 
    cin >> mes;
    
    WSADATA ws;
    if (WSAStartup (MAKEWORD (2, 2), &ws))
    {
           cout << "\nLibray not load\n";
           return 1;
    }
    
    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, sizeof(serv));
 
    if (j < 0)
    {
        cout << "\nError\n";
    }
 
    while (1)
    {
        int h = send (s, mes, sizeof(mes), 0); 
        
        Sleep (50);
    }
 
}