Сервер на сокетах - C++ - Ответ 8143191

#define _WINSOCK_DEPRECATED_NO_WARNINGS
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <sstream>
#include <string>
#include <list>
 
#define MAX_BUFFER 1024
#define _WIN32_WINNT 0x501
 
#include <WinSock2.h>
#include <WS2tcpip.h>
 
#pragma comment(lib, "Ws2_32.lib")
 
using std::cerr;
using std::cout;
using std::string;
using std::endl;
using std::list;
 
int main()
{
    //getIP();
    WSADATA wsaData;
 
    int result = WSAStartup(MAKEWORD(2, 2), &wsaData);
 
    if (result != 0)
    {
        cerr << "WSAStartup failed: " << result << "\n";
        return result;
    }
 
    int listen_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
 
    if (listen_socket == INVALID_SOCKET)
    {
        cerr << "error at socket: " << WSAGetLastError() << "\n";
        WSACleanup();
        return 1;
    }
 
    SOCKADDR_IN server;
    server.sin_family = AF_INET;
    server.sin_port = htons(5000);
    server.sin_addr.S_un.S_addr = INADDR_ANY;
 
    result = bind(listen_socket, (SOCKADDR*)&server, sizeof(server));
 
    if (result == SOCKET_ERROR)
    {
        cerr << "bind failed with error: " << WSAGetLastError() << "\n";
        closesocket(listen_socket);
        WSACleanup();
        return 1;
    }
 
    if (listen(listen_socket, SOMAXCONN) == SOCKET_ERROR)
    {
        cerr << "listen failed with error: " << WSAGetLastError() << "\n";
        closesocket(listen_socket);
        WSACleanup();
        return 1;
    }
 
    char buf[MAX_BUFFER];
    list<int> client_list;
    int client_socket = INVALID_SOCKET;
 
    while (1)
    {
        client_socket = accept(listen_socket, NULL, NULL);                //1
        if (client_socket == INVALID_SOCKET)
        {
            cerr << "accept failed: " << WSAGetLastError() << "\n";
            closesocket(listen_socket);
            WSACleanup();
            return 1;
        }       
 
        result = recv(client_socket, buf, MAX_BUFFER, 0);
 
        if (result == SOCKET_ERROR)
        {
            cerr << "recv failed: " << result << "\n";
            closesocket(client_socket);
        }
        if (result == 0)
        {
            cerr << "connecting closed...\n";
        }
        else if (result > 0)
        {
            buf[result] = '\0';
 
            cout << buf << endl;
 
            string response = "client connect!";
            result = send(client_socket, response.c_str(), response.length(), 0);
 
            if (result == SOCKET_ERROR)
            {
                cerr << "send failed: " << WSAGetLastError() << "\n";
            }
        }
        closesocket(client_socket);
    }
 
    closesocket(listen_socket);
    //freeaddrinfo(addr);
    WSACleanup();
 
    return 0;