*                        included and/or implemented by default.

 *                        All those things are in this file.

 */

#ifndef NETWORK_CORE_OS_ABSTRACTION_H

#define NETWORK_CORE_OS_ABSTRACTION_H

/* Include standard stuff per OS */

#ifdef ENABLE_NETWORK

/* Windows stuff */

#if defined(WIN32) || defined(WIN64)

#include <errno.h>

#include <winsock2.h>

#include <ws2tcpip.h>

#include <windows.h>

#define GET_LAST_ERROR() WSAGetLastError()

#undef EWOULDBLOCK

#define EWOULDBLOCK WSAEWOULDBLOCK

/* Windows has some different names for some types */

typedef unsigned long in_addr_t;

#if !(defined(__MINGW32__) || defined(__CYGWIN__))

	/* Windows has some different names for some types */

	typedef SSIZE_T ssize_t;

	typedef int socklen_t;

#	define IPPROTO_IPV6 41

#else

#include "../../os/windows/win32.h"

#include "../../core/alloc_func.hpp"

#define AI_ADDRCONFIG   0x00000400  /* Resolution only if global address configured */

#define IPV6_V6ONLY 27

static inline int OTTDgetnameinfo(const struct sockaddr *sa, socklen_t salen, char *host, DWORD hostlen, char *serv, DWORD servlen, int flags)

{

	static int (WINAPI *getnameinfo)(const struct sockaddr *, socklen_t, char *, DWORD, char *, DWORD, int) = NULL;

	static bool first_time = true;

	if (first_time) {

		LoadLibraryList((Function*)&getnameinfo, "ws2_32.dll\0getnameinfo\0\0");

		first_time = false;

	}

	if (getnameinfo != NULL) return getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);

	return 0;

}

#define getnameinfo OTTDgetnameinfo

static inline int OTTDgetaddrinfo(const char *nodename, const char *servname, const struct addrinfo *hints, struct addrinfo **res)

{

	static int (WINAPI *getaddrinfo)(const char *, const char *, const struct addrinfo *, struct addrinfo **) = NULL;

	static bool first_time = true;

	if (first_time) {

		LoadLibraryList((Function*)&getaddrinfo, "ws2_32.dll\0getaddrinfo\0\0");

		first_time = false;

	}

	if (getaddrinfo != NULL) return getaddrinfo(nodename, servname, hints, res);

	*res = NULL;

	in_addr_t ip = inet_addr(nodename);

	if (ip == INADDR_NONE) {

		struct hostent *he = gethostbyname(nodename);

		if (he == NULL) return EAI_NONAME;

		ip = (*(struct in_addr *)he->h_addr).s_addr;

	}

	struct sockaddr_in *sin = CallocT<struct sockaddr_in>(1);

	sin->sin_family = AF_INET;

	sin->sin_port = htons(strtoul(servname, NULL, 10));

	sin->sin_addr.s_addr = ip;

	struct addrinfo *ai = CallocT<struct addrinfo>(1);

	ai->ai_family = PF_INET;

	ai->ai_addr = (struct sockaddr*)sin;

	ai->ai_addrlen = sizeof(*sin);

	ai->ai_socktype = hints->ai_socktype;

	*res = ai;

	return 0;

}

#define getaddrinfo OTTDgetaddrinfo

static inline void OTTDfreeaddrinfo(struct addrinfo *ai)

{

	static int (WINAPI *freeaddrinfo)(struct addrinfo *) = NULL;

	static bool first_time = true;

	if (ai == NULL) return;