[IPython-dev] connecting ipythonqt to an existing kernel should not require specifying 4 ports

Fernando Perez fperez.net@gmail....
Thu Sep 9 18:26:17 CDT 2010

On Thu, Sep 9, 2010 at 3:58 PM, MinRK <benjaminrk@gmail.com> wrote:
> In order to connect a second ipythonqt frontend to an existing kernel, I
> must specify by hand all 4 ports at the command-line.  This really shouldn't
> be the case, especially since the default behavior is to have the ports
> ordered sequentially.
> I think it should at least be able to try using consecutive ports when a
> single port is given, or use a two-stage connection model that doesn't
> require clients to ever know more than one port, as is done in the parallel
> code.
> Having to type 'ipythonqt -e --xreq 65273 --sub 65274 --rep 65275 --hb
> 65276', as I just had to, just doesn't make sense.

I agree that's annoying.  Perhaps as a start we could change the model
to 'find a random port and then use the next 3 above that'...  Then
you'd only need to specify the starting port.

The two-stage model is indeed the cleanest approach.  Right now we
have some nasty business with zmq on win32 (surprise, surprise) so I
doubt we'll be able to look at it.

But once we start integrating with your code, we could uniformize the
connection model to use your approach.



More information about the IPython-dev mailing list