[IPython-dev] IPython Notebook on Webfaction

Thomas Kluyver takowl at gmail.com
Wed Sep 19 05:49:27 EDT 2012

On 19 September 2012 08:49, T J <tjhnson at gmail.com> wrote:
> the last response from the OP mentions that each open notebook uses 3 random
> ports (which differ from the port that the IPython notebook server listens
> on).  Is this true?  This seems like it would be an issue for me.  Can
> someone explain, in general, what IPython notebook is doing with these other
> ports?

One of them is the main request/response channel (e.g. 'execute this
code', 'get completions for foo'), one is a publication channel,
primarily for things printed to stdout, and I think the third is to
get input for stdin (although the notebook doesn't currently implement

There's a pull request open that experiments with merging the three
websocket channels into one - that might help you:

Best wishes,

More information about the IPython-dev mailing list