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Код: Выделить всё

     WSADATA wsa;
     int eth_ok = 0;

     if ( WSAStartup(MAKEWORD(2, 0), &wsa) == 0 )
     {
          s = socket( AF_INET, SOCK_DGRAM, IPPROTO_UDP );

          unsigned long n = 2000;
          setsockopt( s, SOL_SOCKET, SO_RCVTIMEO, (const char*)&n, 4 );

          if ( s != INVALID_SOCKET )
          {
               SOCKADDR_IN sa;
               sa.sin_family      = AF_INET;
               sa.sin_port        = 0;
               sa.sin_addr.s_addr = ADDR_ANY;

               if ( bind(s, (SOCKADDR*)&sa, sizeof(SOCKADDR)) != 0 )
                    return;
          }
          else
               return;
     }
     else
          return;

     sa.sin_family      = AF_INET;
     sa.sin_port        = htons( 34085 );
     sa.sin_addr.s_addr = inet_addr( "192.168.0.112" );

     unsigned char  *buf;
     unsigned short *res;
     int  n, m, k, z;
     struct UOSHDR  *ptr;

     n   = sizeof( struct UOSHDR );
     buf = new unsigned char[ n ];
     ptr = (struct UOSHDR*) buf;
     m   = 6;
     res = new unsigned short[ m ];

     ptr->id   = id++;
     ptr->cmd  = 1;
     ptr->addr = 0;
     ptr->len  = 4;

     k = sendto( s, buf, n, 0, (SOCKADDR*)&sa, sizeof(SOCKADDR) );

     z = sizeof( SOCKADDR );
     ZeroMemory( &sa, z );

     k = recvfrom( s, (char*)res, m << 1, 0, (SOCKADDR*)&sa, &z );
     z=WSAGetLastError();

     delete[] buf;
     delete[] res;

     closesocket( s );
     WSACleanup();

Код: Выделить всё

sa.sin_addr.s_addr = inet_addr( "192.168.0.112" );