winhttp: Use DNS only for proxy auto-detection.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=52133Signed-off-by: Hans Leidekker <hans@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

winhttp: Use DNS only for proxy auto-detection.
859f9daa · Hans Leidekker · Alexandre Julliard · 7c39ce0a · 859f9daa
Commit 859f9daa authored Nov 30, 2021 by Hans Leidekker Committed by Alexandre Julliard Nov 30, 2021
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Showing with 5 additions and 2 deletions

session.c dlls/winhttp/session.c +5 -2

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--- a/dlls/winhttp/session.c
+++ b/dlls/winhttp/session.c
@@ -1466,7 +1466,7 @@ static WCHAR *detect_autoproxyconfig_url_dns(void)
    while ((p = strchr( p, '.' )) && is_domain_suffix( p + 1, domain ))
    {
        char *name;
-        struct addrinfo *ai;
+        struct addrinfo *ai, hints;
        int res;

        if (!(name = malloc( sizeof("wpad") + strlen(p) )))
@@ -1477,7 +1477,10 @@ static WCHAR *detect_autoproxyconfig_url_dns(void)
        }
        strcpy( name, "wpad" );
        strcat( name, p );
-        res = getaddrinfo( name, NULL, NULL, &ai );
+        memset( &hints, 0, sizeof(hints) );
+        hints.ai_flags  = AI_ALL | AI_DNS_ONLY;
+        hints.ai_family = AF_UNSPEC;
+        res = getaddrinfo( name, NULL, &hints, &ai );
        if (!res)
        {
            ret = build_wpad_url( name, ai );