Re: AF_INET error with sockets on Linux

[Martin Helm]

Am Mittwoch, 28. Juli 2010 19:07:50 schrieb Martin Helm:
> Am Mittwoch, 28. Juli 2010 18:40:50 schrieb George Nychis:
> > I am attempting to get the sockets library working on Ubuntu 10.04, with
> > Octave 3.2.3 (current version packaged for Ubuntu).
> >
> > I found the source code for the socket package here:
> > http://octave.sourceforge.net/sockets/index.html
> >
> > When trying to run "test_octave_sockets" I get the following:
> > error: `AF_INET' undefined near line 12 column 17
> > error: evaluating argument list element number 1
> > error: evaluating argument list element number 1
> > error: called from:
> > error:   dotest at line 12, column 8
> > error:   ./test_octave_sockets at line 95, column 6
> >
> > I found that this was a similar error previously discussed, that seemed
> > to have had a fix for:
> > http://old.nabble.com/Sockets-error-td25230848.html
> >
> > I'm not sure what exactly the fix was, and where it went.  I checked the
> > newest version of Octave to see if it had socket support built in, but I
> > couldn't seem to find it in there.  So I'm assuming the sourceforge
> > package I downloaded is the newest socket code?
> >
> > I could simply replace it with its numeric value:
> > #define AF_INET   2 /* Internet IP Protocol   */
> >
> > But... I'd rather figure out what the core problem is.
> >
> > Thanks!
> > George
> 
> Simple reason:
> 
> The package sockets is not automatically loaded on octave startup.
> Fix: Start octave and invoke
> pkg rebuild -auto sockets
> 
> Exit octave.
> 
> Now the test_octave_sockets script will run (tested on opensuse 11.2, 64
>  bit, octave 3.2.4).
> 
> - mh
> 
I forgot to mention the alternative. If you do not want the package to 
autoload on startup but still use it:

Add the line
pkg load sockets 
to every script which needs the sockets package.
(In your case add it to the test_octave_sockets script.

- mh