From 21dbb3da3d15681b40cb34aeaef0c6a96c4b5dd2 Mon Sep 17 00:00:00 2001
From: Oliver Schmidt <ol.sc@web.de>
Date: Sun, 4 Feb 2018 17:29:51 +0100
Subject: [PATCH] Added check for at least one valid port.

---
 server/main.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/server/main.cpp b/server/main.cpp
index be7b4c3..4f4b4c6 100644
--- a/server/main.cpp
+++ b/server/main.cpp
@@ -10,6 +10,7 @@
 #include <time.h>
 #include <string.h>
 #include <libserialport.h>
+#include <stdlib.h>
 #include <fcntl.h>
 #include <dirent.h>
 #include <sys/stat.h>
@@ -161,6 +162,12 @@ int main(void)
 		sp_free_port_list(ports);
 	}
 
+	if (iValidPortCount == 0)
+	{
+		printf("Err: No valid port\n");
+		return EXIT_FAILURE;
+	}
+
 // TODO: Add server shutdown
 	while (1)
 	{