From 7b463b6c9545eb1bc13534edf8a21f00bbd9d848 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=B6ren=20Tempel?= <soeren+git@soeren-tempel.net>
Date: Mon, 9 Dec 2019 14:17:26 +0100
Subject: [PATCH] dtls-echo: check msg_try_receive return value

---
 examples/dtls-echo/dtls-server.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/examples/dtls-echo/dtls-server.c b/examples/dtls-echo/dtls-server.c
index 1bdf7980e2..2f7b2f1284 100644
--- a/examples/dtls-echo/dtls-server.c
+++ b/examples/dtls-echo/dtls-server.c
@@ -345,9 +345,7 @@ void *_dtls_server_wrapper(void *arg)
     }
 
     while (active) {
-
-        msg_try_receive(&msg); /* Check if we got an (thread) message */
-        if (msg.type == DTLS_STOP_SERVER_MSG) {
+        if ((msg_try_receive(&msg) == -1) && (msg.type == DTLS_STOP_SERVER_MSG)) {
             active = false;
         }
         else {