Tried to switch a led on and of through rpc but IP adress stays unchanged and the url to write the led gives a httpserver error

Dependencies:   EthernetInterface HTTPServer mbed-rpc mbed-rtos mbed

Revision:
0:c20da8fd007a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HTTPServer.lib	Fri Apr 14 13:47:37 2017 +0000
@@ -0,0 +1,1 @@
+http://developer.mbed.org/users/leihen/code/HTTPServer/#cc3f5c53d0d5