From f3ea2e1338054ec0143ac7054e5e91373bcbd558 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sat, 6 Jan 2018 21:36:15 +0100
Subject: [PATCH] handle error properly, do not just log but continue
 gracefully

---
 src/gns/gnunet-dns2gns.c | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/src/gns/gnunet-dns2gns.c b/src/gns/gnunet-dns2gns.c
index 424677d14..bf7cca042 100644
--- a/src/gns/gnunet-dns2gns.c
+++ b/src/gns/gnunet-dns2gns.c
@@ -533,14 +533,21 @@ read_dns4 (void *cls)
     }
   {
     char buf[size + 1];
+    ssize_t sret;
 
     addrlen = sizeof (v4);
-    GNUNET_break (size ==
-		  GNUNET_NETWORK_socket_recvfrom (listen_socket4,
-						  buf,
-						  size + 1,
-						  (struct sockaddr *) &v4,
-						  &addrlen));
+    sret = GNUNET_NETWORK_socket_recvfrom (listen_socket4,
+					   buf,
+					   size + 1,
+					   (struct sockaddr *) &v4,
+					   &addrlen);
+    if (0 > sret)
+    {
+      GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING,
+			   "recvfrom");
+      return;
+    }
+    GNUNET_break (size == (size_t) sret);
     handle_request (listen_socket4,
 		    &v4,
 		    addrlen,
-- 
2.25.1