client

#include "stdafx.h"
#include <stdio.h>
#include <conio.h>
#include <string.h>
#include <winsock2.h>
#include <windows.h>
#include <iostream>
#include <stdlib.h>
#pragma comment(lib, "ws2_32.lib")
using namespace std;
void main()
{
    WORD wVersionRequested;
    WSADATA wsaData;
    int err;
    wVersionRequested = MAKEWORD(2, 2);
    err = WSAStartup(wVersionRequested, &wsaData);
    if (err != 0) { return; }
    while (true)
    {
        SOCKET s = socket(AF_INET, SOCK_STREAM, 0);
        // указание адреса и порта сервера
        sockaddr_in dest_addr;
        dest_addr.sin_family = AF_INET;
        dest_addr.sin_port = htons(1280);
        dest_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
        connect(s, (sockaddr *)&dest_addr, sizeof(dest_addr));
        char buf[100];
        cout << "Enter the string:" << endl;
        while (1)
        {
            fgets(buf, sizeof(buf), stdin);
            if (strlen(buf) >= 5)
                break;
            cout << "Try again " << endl;
        }
        send(s, buf, 100, 0);
        if (recv(s, buf, sizeof(buf), 0) != 0)
        {
            if (strcmp(buf, "-1") == 0)
                cout << "No results" << endl;
            else
            cout << "Poluchenaya stroka:" << endl << buf << endl;

        }
        closesocket(s);
    }
    WSACleanup();
}