session: fix allocation of proxy fifos

Fifos need to be synchronously allocated once a transport like tcp
accepts a session. Since events are now delivered asynchronously,
proxy apps must explicitly register a cb function that manages
fifo allocation prior to being notified of connect event.

Type: fix
Fixes: 0242d30

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I7df973b7014e53e0766ea2bdc61e9871160bc18b
diff --git a/src/vnet/session/application_worker.c b/src/vnet/session/application_worker.c
index 9e4b147..a806c4a 100644
--- a/src/vnet/session/application_worker.c
+++ b/src/vnet/session/application_worker.c
@@ -406,7 +406,7 @@
 
   /* Allocate fifos for session, unless the app is a builtin proxy */
   if (application_is_builtin_proxy (app))
-    return 0;
+    return app->cb_fns.proxy_alloc_session_fifos (s);
 
   sm = app_worker_get_connect_segment_manager (app_wrk);
   return app_worker_alloc_session_fifos (sm, s);