From 24dc41dd58c67b53829888c21bbcaffc7cab5a05 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Tue, 31 Jan 2017 17:45:25 +0100
Subject: [PATCH] implement no-buffer option at route level

---
 src/cadet/gnunet-service-cadet-new_core.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/cadet/gnunet-service-cadet-new_core.c b/src/cadet/gnunet-service-cadet-new_core.c
index 70d0cb83e..ee05a2442 100644
--- a/src/cadet/gnunet-service-cadet-new_core.c
+++ b/src/cadet/gnunet-service-cadet-new_core.c
@@ -27,7 +27,6 @@
  * All functions in this file should use the prefix GCO (Gnunet Cadet cOre (bottom))
  *
  * TODO:
- * - do NOT use buffering if the route options say no buffer!
  * - Optimization: given BROKEN messages, destroy paths (?)
  */
 #include "platform.h"
@@ -394,6 +393,12 @@ route_message (struct CadetPeer *prev,
               GNUNET_MQ_msg_copy (msg));
     return;
   }
+  /* Check if buffering is disallowed, and if so, make sure we only queue
+     one message per direction. */
+  if ( (0 != (route->options & GNUNET_CADET_OPTION_NOBUFFER)) &&
+       (NULL != dir->env_head) )
+    discard_buffer (dir,
+                    dir->env_head);
   rung = dir->rung;
   if (cur_buffers == max_buffers)
   {
-- 
2.25.1