Support SRV servers in failover

Adds a new failover API call fo_add_srv_server that allows the caller
to specify a server that is later resolved into a list of specific
servers using SRV requests.

Also adds a new failover option that specifies how often should the
servers resolved from SRV query considered valid until we need a
refresh.

The "real" servers to connect to are returned to the user as usual,
using the fo_resolve_service_{send,recv} calls.

Make SRV resolution work with c-ares 1.6

1 files changed, 5 insertions, 5 deletions

diff --git a/src/resolv/async_resolv.c b/src/resolv/async_resolv.c
index fe3b3f6b..70d60e37 100644
--- a/src/resolv/async_resolv.c
+++ b/src/resolv/async_resolv.c
@@ -661,11 +661,6 @@ ares_gethostbyname_wakeup(struct tevent_req *subreq)
                        state->family, resolv_gethostbyname_done, req);
 }
 
-/* SRV and TXT parsing is not used anywhere in the code yet, so we disable it
- * for now
- */
-#ifdef BUILD_TXT_SRV
-
 /*
  * A simple helper function that will take an array of struct ares_srv_reply that
  * was allocated by malloc() in c-ares and copies it using talloc. The old one
@@ -869,6 +864,11 @@ ares_getsrv_wakeup(struct tevent_req *subreq)
                ns_c_in, ns_t_srv, resolv_getsrv_done, req);
 }
 
+/* TXT parsing is not used anywhere in the code yet, so we disable it
+ * for now
+ */
+#ifdef BUILD_TXT
+
 /*
  * A simple helper function that will take an array of struct txt_reply that
  * was allocated by malloc() in c-ares and copies it using talloc. The old one