title: Cannot register remote control to Selenium Hub
body: <p>I got this problem when I tried to register the remote control to Selenium Hub.</p>
  
  <p>Here is the ip info:
  RC: 172.16.0.90
  HUB: 172.16.0.121</p>
  
  <p>Step:
  1. "ant launch-hub" on Hub Machine
  2. "ant -Dport=5555 -Dhost=172.16.0.90 -Dhuburl=http://172.16.0.121:4444 lanuch-remote-control" on RC Machine.</p>
  
  <p>The error message is that "Could not contact the Selenium HUb at 'http://localhost:4444' : Connection refused..."</p>
  
  <p>Why it is connecting to "localhost"?  Did I do the wrong step or wrong command? Thanks a lot for the help.</p>