From: Alan T. DeKok <aland@freeradius.org>
Date: Wed, 12 Jul 2017 15:43:12 +0000 (-0400)
Subject: don't call write() if there's no data in the message
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dd63c220d2bdfd85068c73e500997a8c0d48b6ca;p=thirdparty%2Ffreeradius-server.git

don't call write() if there's no data in the message
---

diff --git a/src/lib/io/network.c b/src/lib/io/network.c
index 4e21871fcbd..3088339cacf 100644
--- a/src/lib/io/network.c
+++ b/src/lib/io/network.c
@@ -762,6 +762,14 @@ static void fr_network_post_event(UNUSED fr_event_list_t *el, UNUSED struct time
 
 		listen = cd->listen;
 
+		/*
+		 *	No data to write to the socket, so we skip it.
+		 */
+		if (!cd->m.data_size) {
+			fr_message_done(&cd->m);
+			continue;
+		}
+
 		/*
 		 *	The write function is responsible for ensuring
 		 *	that NAKs are not written to the network.