X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvcl%2Fsock_test_server.c;h=354b9900d102be053c88fb1effb401ec6aea3124;hb=c227e4950d3bc791d2ec4a2131916f9b5c40f008;hp=fbfe66684cb4515b205259606a572af51bf6a9ab;hpb=54ddf435338ce035c1a92199acd5a3b217db177b;p=vpp.git

diff --git a/src/vcl/sock_test_server.c b/src/vcl/sock_test_server.c
index fbfe66684cb..354b9900d10 100644
--- a/src/vcl/sock_test_server.c
+++ b/src/vcl/sock_test_server.c
@@ -653,7 +653,14 @@ main (int argc, char **argv)
 	       errno_val);
       return rv;
     }
-  fcntl (ssm->listen_fd, F_SETFL, O_NONBLOCK);
+  if (fcntl (ssm->listen_fd, F_SETFL, O_NONBLOCK) < 0)
+    {
+      errno_val = errno;
+      perror ("ERROR in main()");
+      fprintf (stderr, "SERVER: ERROR: fcntl failed (errno = %d)!\n",
+	       errno_val);
+      return rv;
+    }
 
 #ifdef VCL_TEST
   rv = vppcom_session_listen (ssm->listen_fd, 10);