I'm trying to send a Rovio robot an http command.

 

This works from the Internet Explorer URL line:

 

http://192.168.0.194///rev.cgi?Cmd=nav&action=18&drive=1&speed=5

 

My attempt at writing this in Lisp:

 

(with-open-stream (http (comm:open-tcp-stream "192.168.0.194" 80))
  (format http "rev.cgi?Cmd=nav&action=18&drive=1&speed=5")
  (force-output http)
  (close http))

The (comm:open-tcp-stream "192.168.0.194" 80) part returns something that looks appropriate, but the command doesn't execute - the robot should move forward, but nothing happens.

 

I apologize for asking such a basic question - but this one has me puzzled....

 

Bruce.