Ошибка при получении информации о сети с помощью GetNetworkParams ()

Question

Это код, который я написал на C ++ для получения информации о сети:

#ifndef WIN_32_LEAN_AND_MEAN
#define WIN_32_LEAN_AND_MEAN
#endif

#include<windows.h>
#include<winsock2.h>
#include<iphlpapi.h>
#include<stdio.h>
#include<iostream>

#pragma comment(lib,"iphlpapi.lib")
using namespace std;

int main()
{
    FIXED_INFO *pFixedInfo;
    IP_ADDR_STRING *pIPAddr;

    ULONG ulOutBuflen;
    DWORD dwRetVal;

    pFixedInfo = (FIXED_INFO *)malloc(sizeof(FIXED_INFO));
    ulOutBuflen = sizeof(FIXED_INFO);

    if (GetNetworkParams(pFixedInfo, &ulOutBuflen) == ERROR_BUFFER_OVERFLOW) {
        free(pFixedInfo);
        pFixedInfo = (FIXED_INFO *)malloc(sizeof(ulOutBuflen));
        if (pFixedInfo == NULL)
            cout << "Error allocating memory needed to call GetNetworkParams \n";
    }

    if(dwRetVal=GetNetworkParams(pFixedInfo,&ulOutBuflen)!=NO_ERROR){
        cout << "GetNetwrokParams failed : " << dwRetVal << endl;
        if (pFixedInfo)
            free(pFixedInfo);
    }

    cout << "Host Name : " << pFixedInfo->HostName;
    cout << "Domain Name : " << pFixedInfo->DomainName;
    cout << "DNS Server s : " << endl;
    cout << pFixedInfo->DnsServerList.IpAddress.String<<endl;
    pIPAddr = pFixedInfo->DnsServerList.Next;
    while (pIPAddr)
    {
        cout << pIPAddr->IpAddress.String << endl;
        pIPAddr = pIPAddr->Next;
    }
    cout << "Node Type : ";
    switch (pFixedInfo->NodeType)
    {
        case 1:
            cout << "Broadcast " << endl;
            break;
        case 2:
            cout << "Peer to Peer " << endl;
            break;
        case 4:
            cout << "Mixed " << endl;
            break;
        case 8:
            cout << "Hybrid " << endl;
            break;
        default :
            cout << endl;
    }
    cout << "NetBios Scope ID : " << pFixedInfo->ScopeId<<endl;

    if (pFixedInfo->EnableRouting)
        cout << "Routing enabled on " << endl;
    else
        cout << "Routing enabled of" << endl;
    if (pFixedInfo->EnableProxy)
        cout << "Proxy enabled " << endl;
    else
        cout << "Proxy disabled " << endl;
    if (pFixedInfo->EnableDns)
        cout << "NETBIOS Resolution uses dns " << endl;
    else
        cout << "NETBIOS Resolution does not uses dns " << endl;

    if (pFixedInfo) {
        free(pFixedInfo);
        pFixedInfo = NULL;
    }

    return 0;
}

Каждый раз, когда я запускаю код, он показывает кучу ошибок. Я взял код из MSDN, но все равно он не работает.

Кто-нибудь может предложить какие-либо улучшения в коде?

Вот ошибки:

Severity    Code    Description Project File    Line    Suppression State
Warning C4005   'IN_CLASSB': macro redefinition Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\shared\ws2def.h 578 
Error (active)  E0040   expected an identifier  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\shared\ws2def.h 437 
Error (active)  E0040   expected an identifier  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\shared\ws2def.h 438 
Error (active)  E0040   expected an identifier  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\shared\ws2def.h 439 
Error (active)  E0040   expected an identifier  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\shared\ws2def.h 446 
Error (active)  E0040   expected an identifier  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\shared\ws2def.h 452 
Error (active)  E0040   expected an identifier  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\shared\ws2def.h 453 
Error (active)  E0040   expected an identifier  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\shared\ws2def.h 454 
Error (active)  E0040   expected an identifier  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\shared\ws2def.h 470 
Error (active)  E0040   expected an identifier  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\shared\ws2def.h 480 
Error (active)  E0040   expected an identifier  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\shared\ws2def.h 482 
Error (active)  E0338   more than one instance of overloaded function "__WSAFDIsSet" has 'C' linkage    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   141 
Error (active)  E0338   more than one instance of overloaded function "accept" has 'C' linkage  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   1624    
Error (active)  E0338   more than one instance of overloaded function "bind" has 'C' linkage    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   1646    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "closesocket" (declared at line 749 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   1667    
Error (active)  E0338   more than one instance of overloaded function "connect" has 'C' linkage Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   1684    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "ioctlsocket" (declared at line 756 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   1705    
Error (active)  E0338   more than one instance of overloaded function "getpeername" has 'C' linkage Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   1728    
Error (active)  E0338   more than one instance of overloaded function "getsockname" has 'C' linkage Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   1749    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "getsockopt" (declared at line 771 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")   Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   1770    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "htonl" (declared at line 778 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   1795    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "htons" (declared at line 780 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   1812    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "inet_addr" (declared at line 782 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   1830    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "inet_ntoa" (declared at line 784 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   1848    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "listen" (declared at line 786 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")   Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   1948    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "ntohl" (declared at line 790 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   1967    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "ntohs" (declared at line 792 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   1984    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "recv" (declared at line 794 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h") Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2001    
Error (active)  E0338   more than one instance of overloaded function "recvfrom" has 'C' linkage    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2024    
Error (active)  E0338   more than one instance of overloaded function "select" has 'C' linkage  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2051    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "send" (declared at line 815 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h") Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2076    
Error (active)  E0338   more than one instance of overloaded function "sendto" has 'C' linkage  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2099    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "setsockopt" (declared at line 829 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")   Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2126    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "shutdown" (declared at line 836 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h") Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2151    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "socket" (declared at line 840 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")   Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2171    
Error (active)  E0311   cannot overload functions distinguished by return type alone    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2196    
Error (active)  E0311   cannot overload functions distinguished by return type alone    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2218    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "gethostname" (declared at line 854 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2235    
Error (active)  E0311   cannot overload functions distinguished by return type alone    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2275    
Error (active)  E0311   cannot overload functions distinguished by return type alone    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2294    
Error (active)  E0311   cannot overload functions distinguished by return type alone    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2313    
Error (active)  E0311   cannot overload functions distinguished by return type alone    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2330    
Error (active)  E0338   more than one instance of overloaded function "WSAStartup" has 'C' linkage  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2350    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "WSACleanup" (declared at line 876 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")   Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2370    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "WSASetLastError" (declared at line 878 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2387    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "WSAGetLastError" (declared at line 880 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")  Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2404    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "WSAIsBlocking" (declared at line 882 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2425    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "WSAUnhookBlockingHook" (declared at line 884 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2443    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "WSASetBlockingHook" (declared at line 886 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")   Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2461    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "WSACancelBlockingCall" (declared at line 888 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2479    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "WSAAsyncGetServByName" (declared at line 890 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2497    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "WSAAsyncGetServByPort" (declared at line 898 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2525    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "WSAAsyncGetProtoByName" (declared at line 906 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")   Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2553    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "WSAAsyncGetProtoByNumber" (declared at line 913 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h") Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2579    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "WSAAsyncGetHostByName" (declared at line 920 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2605    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "WSAAsyncGetHostByAddr" (declared at line 927 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2631    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "WSACancelAsyncRequest" (declared at line 936 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")    Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2661    
Error (active)  E1389   redeclaration cannot add dllexport/dllimport to "WSAAsyncSelect" (declared at line 938 of "c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\winsock.h")   Project1    c:\Program Files (x86)\Windows Kits\10\Include\10.0.17134.0\um\WinSock2.h   2679    
Warning C4005   'AF_IPX': macro redefinition    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\shared\ws2def.h 103 
Warning C4005   'AF_MAX': macro redefinition    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\shared\ws2def.h 147 
Warning C4005   'SO_DONTLINGER': macro redefinition Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\shared\ws2def.h 185 
Error   C2011   'sockaddr': 'struct' type redefinition  Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\shared\ws2def.h 235 
Error   C2059   syntax error: 'constant'    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\shared\ws2def.h 437 
Error   C3805   'constant': unexpected token, expected either '}' or a ','  Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\shared\ws2def.h 437 
Warning C4005   'IN_CLASSA': macro redefinition Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\shared\ws2def.h 572 
Warning C4005   'IN_CLASSC': macro redefinition Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\shared\ws2def.h 584 
Warning C4005   'INADDR_ANY': macro redefinition    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\shared\ws2def.h 595 
Warning C4005   'INADDR_BROADCAST': macro redefinition  Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\shared\ws2def.h 597 
Error   C2011   'sockaddr_in': 'struct' type redefinition   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\shared\ws2def.h 633 
Error   C2011   'fd_set': 'struct' type redefinition    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   136 
Warning C4005   'FD_CLR': macro redefinition    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   156 
Warning C4005   'FD_SET': macro redefinition    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   171 
Error   C2011   'timeval': 'struct' type redefinition   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   180 
Error   C2011   'hostent': 'struct' type redefinition   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   236 
Error   C2011   'netent': 'struct' type redefinition    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   249 
Error   C2011   'servent': 'struct' type redefinition   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   256 
Error   C2011   'protoent': 'struct' type redefinition  Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   268 
Error   C2011   'WSAData': 'struct' type redefinition   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   364 
Error   C2011   'sockproto': 'struct' type redefinition Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   462 
Error   C2011   'linger': 'struct' type redefinition    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   504 
Warning C4005   'SOMAXCONN': macro redefinition Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   517 
Warning C4005   'FD_READ': macro redefinition   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   551 
Warning C4005   'FD_WRITE': macro redefinition  Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   554 
Warning C4005   'FD_OOB': macro redefinition    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   557 
Warning C4005   'FD_ACCEPT': macro redefinition Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   560 
Warning C4005   'FD_CONNECT': macro redefinition    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   563 
Warning C4005   'FD_CLOSE': macro redefinition  Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   566 
Error   C2375   'accept': redefinition; different linkage   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   1624    
Error   C2375   'bind': redefinition; different linkage Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   1646    
Error   C2375   'closesocket': redefinition; different linkage  Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   1667    
Error   C2375   'connect': redefinition; different linkage  Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   1684    
Error   C2375   'ioctlsocket': redefinition; different linkage  Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   1705    
Error   C2375   'getpeername': redefinition; different linkage  Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   1728    
Error   C2375   'getsockname': redefinition; different linkage  Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   1749    
Error   C2375   'getsockopt': redefinition; different linkage   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   1770    
Error   C2375   'htonl': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   1795    
Error   C2375   'htons': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   1812    
Error   C2375   'inet_addr': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   1830    
Error   C2375   'inet_ntoa': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   1848    
Error   C2375   'listen': redefinition; different linkage   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   1948    
Error   C2375   'ntohl': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   1967    
Error   C2375   'ntohs': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   1984    
Error   C2375   'recv': redefinition; different linkage Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2001    
Error   C2375   'recvfrom': redefinition; different linkage Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2024    
Error   C2375   'select': redefinition; different linkage   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2051    
Error   C2375   'send': redefinition; different linkage Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2076    
Error   C2375   'sendto': redefinition; different linkage   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2099    
Error   C2375   'setsockopt': redefinition; different linkage   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2126    
Error   C2375   'shutdown': redefinition; different linkage Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2151    
Error   C2375   'socket': redefinition; different linkage   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2171    
Error   C2375   'gethostbyaddr': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2196    
Error   C2375   'gethostbyname': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2218    
Error   C2375   'gethostname': redefinition; different linkage  Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2235    
Error   C2375   'getservbyport': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2275    
Error   C2375   'getservbyname': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2294    
Error   C2375   'getprotobynumber': redefinition; different linkage Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2313    
Error   C2375   'getprotobyname': redefinition; different linkage   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2330    
Error   C2375   'WSAStartup': redefinition; different linkage   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2350    
Error   C2375   'WSACleanup': redefinition; different linkage   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2370    
Error   C2375   'WSASetLastError': redefinition; different linkage  Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2387    
Error   C2375   'WSAGetLastError': redefinition; different linkage  Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2404    
Error   C2375   'WSAIsBlocking': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2425    
Error   C2375   'WSAUnhookBlockingHook': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2443    
Error   C2375   'WSASetBlockingHook': redefinition; different linkage   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2461    
Error   C2375   'WSACancelBlockingCall': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2479    
Error   C2375   'WSAAsyncGetServByName': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2497    
Error   C2375   'WSAAsyncGetServByPort': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2525    
Error   C2375   'WSAAsyncGetProtoByName': redefinition; different linkage   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2553    
Error   C2375   'WSAAsyncGetProtoByNumber': redefinition; different linkage Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2579    
Error   C2375   'WSAAsyncGetHostByName': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2605    
Error   C2375   'WSAAsyncGetHostByAddr': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2631    
Error   C2375   'WSACancelAsyncRequest': redefinition; different linkage    Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2661    
Error   C2375   'WSAAsyncSelect': redefinition; different linkage   Project1    c:\program files (x86)\windows kits\10\include\10.0.17134.0\um\winsock2.h   2679    

Answer 1

Если _WIN32_WINNT равно < 0x0400, windows.h включает winsock.h, если оно и winsock2.h еще не включены.

Если _WIN32_WINNT равно >= 0x0400, windows.h включает winsock2.h вместо winsock.h.

winsock.h несовместим с winsock2.h, поэтому, если winsock.h будет включено до winsock2.h, произойдут все виды ошибок, включая те, которые вы видите. Но если winsock2.h будет включено до winsock.h, он отключит winsock.h, чтобы вы могли избежать ошибок.

Итак, чтобы отключить winsock.h, чтобы вы могли использовать winsock2.h, вам необходимо:

• убедитесь, что _WIN32_WINNT равно >= 0x0400.

• ход #include<winsock2.h> выше #include<windows.h>

• добавить #define _WINSOCKAPI_ выше #include<windows.h>

---

Кроме того, на боковой ноте WIN_32_LEAN_AND_MEAN должно быть вместо WIN32_LEAN_AND_MEAN.