localhost==127.0.0.1?

Hi,
I thought "localhost" is equivalent to "127.0.0.1". However, when i try to
use this http://localhost:3000/say/hello , it says

"Unable to connect
Firefox can't establish a connection to the server at localhost:3000."

When i try to use http://127.0.0.1:3000/say/hello , it works fine.

Any idea why?

Regards,
Kartik Nayak


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