[clue-tech] difference between localhost and hostname

[Angelo Bertolli]

Jason S. Friedman wrote:
> I have been playing with Google App Engine, although my question is 
> probably not related to this particular application.  I start my 
> service as an unprivileged user with:
> ./dev_appserver.py --port=9999 myapp
>
> powerpull at goldenrule ~ $ egrep 'localhost|goldenrule' /etc/hosts
> 127.0.0.1       localhost
> 192.168.0.150   goldenrule.powerpull.net        goldenrule
>
> When I point my browser at http://localhost:9999 the service returns 
> my page.  When I point my browser at http://goldenrule:9999 or 
> http://goldenrule.powerpull.net:9999 I get a connection error.  Why is 
> that?

I guess your application only listens on 127.0.0.1 and not on any other 
interface.

You can run `netstat -l` to see what's listening.

Angelo