From: Christian Grothoff <christian@grothoff.org>
Date: Sat, 31 Oct 2009 20:43:41 +0000 (+0000)
Subject: tolerate empty message
X-Git-Tag: initial-import-from-subversion-38251~23194
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=146e94e18ae9166b2894916878e3c85136d6216e;p=oweals%2Fgnunet.git

tolerate empty message
---

diff --git a/src/core/core_api.c b/src/core/core_api.c
index a6d729245..1a74eb7d0 100644
--- a/src/core/core_api.c
+++ b/src/core/core_api.c
@@ -1054,6 +1054,12 @@ produce_send (void *cls, size_t size, void *buf)
   trigger_next_request (h);
   GNUNET_assert (size >= sizeof (struct SendMessage));
   dt = notify (notify_cls, size - sizeof (struct SendMessage), &sm[1]);
+  if (0 == dt)
+    {
+      /* client decided to send nothing! */
+      return 0;
+    }
+  GNUNET_assert (dt >= sizeof (struct GNUNET_MessageHeader));
   sm->header.size = htons (dt + sizeof (struct SendMessage));
   GNUNET_assert (dt + sizeof (struct SendMessage) < size);
   return dt + sizeof (struct SendMessage);
diff --git a/src/core/gnunet-service-core.c b/src/core/gnunet-service-core.c
index d950237cd..1d272b873 100644
--- a/src/core/gnunet-service-core.c
+++ b/src/core/gnunet-service-core.c
@@ -1750,6 +1750,10 @@ process_plaintext_neighbour_queue (struct Neighbour *n)
 
 /**
  * Handle CORE_SEND request.
+ *
+ * @param cls unused
+ * @param client the client issuing the request
+ * @param message the "struct SendMessage"
  */
 static void
 handle_client_send (void *cls,
@@ -1796,6 +1800,10 @@ send_connect_continuation (void *cls, size_t size, void *buf)
 
 /**
  * Handle CORE_SEND request.
+ *
+ * @param cls unused
+ * @param client the client issuing the request
+ * @param message the "struct SendMessage"
  */
 static void
 handle_client_send (void *cls,