winhttp(5/5): Support IPv6 in netconn_resolve
Juan Lang
juan.lang at gmail.com
Tue Jul 7 16:09:03 CDT 2009
--Juan
-------------- next part --------------
From a48947ca1cad2816f38db10ee7015871831e1a67 Mon Sep 17 00:00:00 2001
From: Juan Lang <juan.lang at gmail.com>
Date: Tue, 7 Jul 2009 13:58:52 -0700
Subject: [PATCH 5/5] Support IPv6 in netconn_resolve
---
dlls/winhttp/net.c | 19 +++++++++++++++----
1 files changed, 15 insertions(+), 4 deletions(-)
diff --git a/dlls/winhttp/net.c b/dlls/winhttp/net.c
index 1239aaf..c71b694 100644
--- a/dlls/winhttp/net.c
+++ b/dlls/winhttp/net.c
@@ -581,15 +581,25 @@ BOOL netconn_resolve( WCHAR *hostnameW, INTERNET_PORT port, struct sockaddr *sa,
#ifdef HAVE_GETADDRINFO
memset( &hints, 0, sizeof(struct addrinfo) );
+ /* Prefer IPv4 to IPv6 addresses, since some web servers do not listen on
+ * their IPv6 addresses even though they have IPv6 addresses in the DNS.
+ */
hints.ai_family = AF_INET;
ret = getaddrinfo( hostname, NULL, &hints, &res );
- heap_free( hostname );
if (ret != 0)
{
- TRACE("failed to get address of %s (%s)\n", debugstr_w(hostnameW), gai_strerror(ret));
- return FALSE;
+ TRACE("failed to get IPv4 address of %s (%s), retrying with IPv6\n", debugstr_w(hostnameW), gai_strerror(ret));
+ hints.ai_family = AF_INET6;
+ ret = getaddrinfo( hostname, NULL, &hints, &res );
+ if (ret != 0)
+ {
+ TRACE("failed to get address of %s (%s)\n", debugstr_w(hostnameW), gai_strerror(ret));
+ heap_free( hostname );
+ return FALSE;
+ }
}
+ heap_free( hostname );
if (*sa_len < res->ai_addrlen)
{
WARN("address too small\n");
@@ -600,6 +610,7 @@ BOOL netconn_resolve( WCHAR *hostnameW, INTERNET_PORT port, struct sockaddr *sa,
memcpy( sa, res->ai_addr, res->ai_addrlen );
freeaddrinfo( res );
+ return TRUE;
#else
EnterCriticalSection( &cs_gethostbyname );
@@ -624,8 +635,8 @@ BOOL netconn_resolve( WCHAR *hostnameW, INTERNET_PORT port, struct sockaddr *sa,
sin->sin_port = htons( port );
LeaveCriticalSection( &cs_gethostbyname );
-#endif
return TRUE;
+#endif
}
const void *netconn_get_certificate( netconn_t *conn )
--
1.6.3.2
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