dirmngr: Make use of IPv4 and IPV6 more explicit.

* common/http.c (connect_server): Handle the new flags.
* common/http.h (HTTP_FLAG_IGNORE_IPv4, HTTP_FLAG_IGNORE_IPv4): New.
* dirmngr/ks-engine-hkp.c (map_host): Add arg r_httpflags.
(make_host_part): Ditto.
(send_request): Add arg httpflags.
(ks_hkp_search, ks_hkp_get, ks_hkp_put): Handle httpflags.

1 files changed, 6 insertions, 4 deletions

diff --git a/common/http.h b/common/http.h
index bea9f07f1..224128b94 100644
--- a/common/http.h
+++ b/common/http.h
@@ -74,10 +74,12 @@ http_req_t;
 /* We put the flag values into an enum, so that gdb can display them. */
 enum
   {
-    HTTP_FLAG_TRY_PROXY = 1,
-    HTTP_FLAG_SHUTDOWN = 2,
-    HTTP_FLAG_LOG_RESP = 8,
-    HTTP_FLAG_IGNORE_CL = 32
+    HTTP_FLAG_TRY_PROXY = 1,     /* Try to use a proxy.  */
+    HTTP_FLAG_SHUTDOWN = 2,      /* Close sending end after the request.  */
+    HTTP_FLAG_LOG_RESP = 8,      /* Log the server respone.  */
+    HTTP_FLAG_IGNORE_CL = 32,    /* Ignore content-length.  */
+    HTTP_FLAG_IGNORE_IPv4 = 64,  /* Do not use IPv4.  */
+    HTTP_FLAG_IGNORE_IPv6 = 128  /* Do not use IPv6.  */
   };
 
 struct http_context_s;