CODEWITHSUNDEEP
c++windowsnetwork-programming
master cheif
master cheif

Reputation: 81

Is there an alternative to inet_ntop / InetNtop in Windows XP?

I'm trying to compile beej's guide to network programming examples, but Windows XP doesn't have such a function. I'm using mingw, if it makes any difference.

Upvotes: 8

Views: 15864

Answers (6)

chenyu yan
chenyu yan

Reputation: 1

There is no header file for the function getnameinfo in Xp Sp3 because it uses the lowest operating system of Vista. I will replace it with the following method, which is only applicable to ipv4:

QString ipv4ToString(const in_addr& addr) {
    char ipstr[INET_ADDRSTRLEN];
    unsigned char* bytes = (unsigned char*)&addr;
    _snprintf(ipstr, INET_ADDRSTRLEN, "%u.%u.%u.%u", bytes[0], bytes[1], bytes[2], bytes[3]);
    return QString::fromLocal8Bit(ipstr);
}

Upvotes: 0

bk138
bk138

Reputation: 3088

You might want to use something Jeroen Massar provided here, excerpt from his post follows:

const char *inet_ntop(int af, const void *src, char *dst, socklen_t cnt)
{
    if (af == AF_INET)
    {
        struct sockaddr_in in;
        memset(&in, 0, sizeof(in));
        in.sin_family = AF_INET;
        memcpy(&in.sin_addr, src, sizeof(struct in_addr));
        getnameinfo((struct sockaddr *)&in, sizeof(struct
            sockaddr_in), dst, cnt, NULL, 0, NI_NUMERICHOST);
        return dst;
    }
    else if (af == AF_INET6)
    {
        struct sockaddr_in6 in;
        memset(&in, 0, sizeof(in));
        in.sin6_family = AF_INET6;
        memcpy(&in.sin6_addr, src, sizeof(struct in_addr6));
        getnameinfo((struct sockaddr *)&in, sizeof(struct
            sockaddr_in6), dst, cnt, NULL, 0, NI_NUMERICHOST);
        return dst;
    }
    return NULL;
}

Upvotes: 2

mechanicker
mechanicker

Reputation: 986

From the WinSock layer:

Upvotes: 10

DrMD
DrMD

Reputation: 11

you can use winsocket with mingw-64 on windows 7

#include <winsock2.h>
#include <windows.h>
#include <ws2tcpip.h>

linkwith

gcc showip.c -lws2_32

Target: x86_64-w64-mingw32 Thread model: win32 gcc version 6.3.0 (GCC)

Upvotes: 1

Yuriy Petrovskiy
Yuriy Petrovskiy

Reputation: 8178

There is also inet_ntop function in POSIX compliant libc for Windows (PlibC) library that was created for porting POSIX applications to Windows. There is no notes about it in online documentation, but it exists in file inet_ntop.c at least since 2008 (according to file date). 

const char * inet_ntop(int af, const void *src, char *dst, size_t size)

Upvotes: 3

Eclipse
Eclipse

Reputation: 45493

If you're only dealing with IPv4 addresses, you can use inet_ntoa. It's available on Windows 2000 or later. Otherwise you'll have to either require Vista and later, or write your own inet_ntop function.

You could also look at boost - the boost::asio has an inet_ntop implementation that works in Windows: boost::asio::detail::socket_ops::inet_ntop. You can see the source code here.

Upvotes: 7

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