From 1e4b13dfac1594f2be07100cdd63e3d58b45702c Mon Sep 17 00:00:00 2001
From: David Garske <david@wolfssl.com>
Date: Thu, 23 Dec 2021 15:25:25 -0800
Subject: [PATCH] Only include `ws2tcpip.h` if not user IO.

---
 src/sniffer.c               | 2 +-
 wolfssl/wolfcrypt/wc_port.h | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/sniffer.c b/src/sniffer.c
index d9ebe11dc..fe1db4e24 100644
--- a/src/sniffer.c
+++ b/src/sniffer.c
@@ -77,7 +77,7 @@
     #ifndef _WIN32
         #include <arpa/inet.h>
     #else
-        #include <WS2tcpip.h>
+        #include <ws2tcpip.h>
     #endif
 #endif
 
diff --git a/wolfssl/wolfcrypt/wc_port.h b/wolfssl/wolfcrypt/wc_port.h
index 910c29a6e..017787d31 100644
--- a/wolfssl/wolfcrypt/wc_port.h
+++ b/wolfssl/wolfcrypt/wc_port.h
@@ -618,7 +618,9 @@
                 #include <winsock2.h>
             #endif
             #include <windows.h>
-            #include <ws2tcpip.h>
+            #ifndef WOLFSSL_USER_IO
+                #include <ws2tcpip.h> /* required for InetPton */
+            #endif
         #endif /* WOLFSSL_SGX */
     #endif
 #elif defined(THREADX)