From 61531451f2d65a62fe7648bba621e1600f69f997 Mon Sep 17 00:00:00 2001
From: Martine Lenders <mail@martine-lenders.eu>
Date: Thu, 3 Nov 2016 12:55:44 +0100
Subject: [PATCH] examples: fix off-by-one error in TinyDTLS example

---
 examples/dtls-echo/dtls-client.c | 13 ++++---------
 examples/dtls-echo/dtls-server.c |  2 +-
 2 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/examples/dtls-echo/dtls-client.c b/examples/dtls-echo/dtls-client.c
index bef48c3646..f0a0b356d2 100644
--- a/examples/dtls-echo/dtls-client.c
+++ b/examples/dtls-echo/dtls-client.c
@@ -502,18 +502,13 @@ static void client_send(char *addr_str, char *data, unsigned int delay)
 
 int udp_client_cmd(int argc, char **argv)
 {
-    if (argc < 2) {
+    uint32_t delay = 1000000;
+
+    if (argc < 3) {
         printf("usage: %s <addr> <data> [<delay in us>]\n", argv[0]);
         return 1;
     }
-
-    uint32_t delay = 1000000;
-    if (argc < 3) {
-        printf("usage: %s <addr> <data> [<delay in us>]\n",
-               argv[0]);
-        return 1;
-    }
-    if (argc > 3) {
+    else if (argc > 3) {
         delay = (uint32_t)atoi(argv[3]);
     }
     client_send(argv[1], argv[2],  delay);
diff --git a/examples/dtls-echo/dtls-server.c b/examples/dtls-echo/dtls-server.c
index 2156f76166..bbec858e11 100644
--- a/examples/dtls-echo/dtls-server.c
+++ b/examples/dtls-echo/dtls-server.c
@@ -435,7 +435,7 @@ static void stop_server(void)
 
 int udp_server_cmd(int argc, char **argv)
 {
-    if (argc < 1) {
+    if (argc < 2) {
         printf("usage: %s start|stop\n", argv[0]);
         return 1;
     }