[libgovirt] Use persistent authentication

[Christophe Fergeau <teuf src gnome org>]

commit 63ba74bb7d4da74a5a0f865cd88ae2118060696e
Author: Christophe Fergeau <cfergeau redhat com>
Date:   Thu Dec 12 14:52:08 2013 +0100

    Use persistent authentication
    
    Now that we can handle cookies in the HTTP session with the oVirt engine,
    we can set the Prefer: persistent-auth header so that the user is not
    being asked for a password for every REST request.

 govirt/ovirt-action-rest-call.c |    2 ++
 govirt/ovirt-rest-call.c        |    2 ++
 2 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/govirt/ovirt-action-rest-call.c b/govirt/ovirt-action-rest-call.c
index a4bf7c4..e59c73b 100644
--- a/govirt/ovirt-action-rest-call.c
+++ b/govirt/ovirt-action-rest-call.c
@@ -97,6 +97,8 @@ OvirtActionRestCall *ovirt_action_rest_call_new(RestProxy *proxy)
     } else {
         rest_proxy_call_add_header(REST_PROXY_CALL(call), "Filter", "true");
     }
+    rest_proxy_call_add_header(REST_PROXY_CALL(call),
+                               "Prefer", "persistent-auth");
 
     return call;
 }
diff --git a/govirt/ovirt-rest-call.c b/govirt/ovirt-rest-call.c
index 42c6a51..e5ff47d 100644
--- a/govirt/ovirt-rest-call.c
+++ b/govirt/ovirt-rest-call.c
@@ -130,6 +130,8 @@ static void ovirt_rest_call_constructed(GObject *object)
         } else {
             rest_proxy_call_add_header(REST_PROXY_CALL(object), "Filter", "true");
         }
+        rest_proxy_call_add_header(REST_PROXY_CALL(object),
+                                   "Prefer", "persistent-auth");
         g_object_unref(proxy);
     }
 }