From 9b9237fbce6e8005fcda57241598181fb2b4985f Mon Sep 17 00:00:00 2001
From: Jon Turney <jon.turney@dronecode.org.uk>
Date: Thu, 18 May 2017 13:01:06 +0100
Subject: [PATCH] Use INTERNET_FLAG_RESYNCHRONIZE when fetching cacheable URLs
 with wininet

It seems this is needed for correct cache behaviour when the server doesn't
add an ETags header (i.e. sending an If-Modified-Since: request).  Why would
we want sane behaviour by default, eh?
---
 nio-ie5.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/nio-ie5.cc b/nio-ie5.cc
index c6edacbb..7708d4c6 100644
--- a/nio-ie5.cc
+++ b/nio-ie5.cc
@@ -56,6 +56,8 @@ NetIO (_url)
 
   if (!cachable) {
     flags |= INTERNET_FLAG_NO_CACHE_WRITE;
+  } else {
+    flags |= INTERNET_FLAG_RESYNCHRONIZE;
   }
 
   connection = InternetOpenUrl (*internet, url, NULL, 0, flags, 0);
-- 
2.43.5