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notebook: localhost 8080 vs 8000

asked 2013-09-06 22:54:58 +0200

TumericTJ gravatar image

I used Sage v. 5.0 for the first time in a while and couldn't connect to the notebook. I received the message: Firefox can't establish a connection to the server at localhost:8000.

I was still able to use Sage from the command line, but decided to install v. 5.11 to see if that would fix my problem.
In fact, it did; and now the notebook opens at localhost:8080.

Does anyone know the reason for this?

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This was just a change decided on with one of the notebook upgrades, it's not a bug. I'm not really sure about the rationale, though I think that 8000 was more popular so it was better to use 8080.

kcrisman gravatar imagekcrisman ( 2013-09-06 23:53:09 +0200 )edit

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answered 2013-09-07 06:48:57 +0200

tmonteil gravatar image

updated 2013-09-07 06:50:01 +0200

8000 or 8080 are arbitrary default choices. This default choice changed when the notebook became flask-based (see this ticket). You can specify the port you want as follows:

from Sage command line:


or from a shell:

sage -notebook port=8888
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answered 2013-09-07 13:15:39 +0200

ppurka gravatar image

IIRC, the default port was changed in keeping with the official/unofficial suggestions for port numbers. See Wikipedia :)

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Asked: 2013-09-06 22:54:58 +0200

Seen: 1,610 times

Last updated: Sep 07 '13