check_ice is a Nagios plugin-in that checks if a stream is up or
down on a shoutcast or icecast server. The program will look at
the three digit error code (ie. 200, 404, etc.) to give the proper
result code that Nagios can use to know if the stream is up, in
warning or in critical.

WWW: http://www.lns.com/papers/check_ice/