From 2b2acf1111a56ef960448f890a39302259e2426f Mon Sep 17 00:00:00 2001
From: opatomic <j@opatomic.com>
Date: Fri, 24 Apr 2020 10:00:36 -0400
Subject: [PATCH] add support for win2k

getaddrinfo() is not available on win2k. By including wspiapi.h (if
_WIN32_WINNT is defined as value < 0x0501) then a compatibility layer
will be used when running on win2k. For more details, refer to Microsoft
docs for getaddrinfo().

Signed-off-by: opatomic <j@opatomic.com>
---
 library/net_sockets.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/library/net_sockets.c b/library/net_sockets.c
index dbde510db..5c1e665ea 100644
--- a/library/net_sockets.c
+++ b/library/net_sockets.c
@@ -54,8 +54,7 @@
 
 #define IS_EINTR( ret ) ( ( ret ) == WSAEINTR )
 
-#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0501)
-#undef _WIN32_WINNT
+#if !defined(_WIN32_WINNT)
 /* Enables getaddrinfo() & Co */
 #define _WIN32_WINNT 0x0501
 #endif
@@ -64,6 +63,9 @@
 
 #include <winsock2.h>
 #include <windows.h>
+#if (_WIN32_WINNT < 0x0501)
+#include <wspiapi.h>
+#endif
 
 #if defined(_MSC_VER)
 #if defined(_WIN32_WCE)