Best way to use Octave in external application

[Francesco Cat]

2008/4/12, Doug Stewart <dastew at sympatico.ca>:
> Francesco Cat wrote:
>
> > 2008/4/11, Doug Stewart <dastew at sympatico.ca>:
> >
> >
> > > Francesco Cat wrote:
> > >
> > >
> > >
> > > > Hi all,
> > > > I am planning to create a standalone C++ or Java application. I would
> > > > like to use Octave for various tasks, such as calculus and linear
> > > > system analysis.
> > > > What is the best choice do do this? I have tried using sockets but I
> > > > got nothing working (poor documentation and no examples at all).
> > > >
> > > >
> > > >
> > > >
> > > >
> > >  these links might help you get the socket to work. I got it going in c#
> > >
> > >
> http://velveeta.che.wisc.edu/octave/lists/archive//help-octave.2006/msg00992.html
> > >
> > >  and
> > >
> > >
> http://velveeta.che.wisc.edu/octave/lists/archive//help-octave.2006/msg00987.html
> > >
> > >
> > >
> > my main problem is getting listen() working on octave 3.0:
> > on octave-forge documentation
> > (http://octave.sourceforge.net/doc/f/listen.html) i can
> see:
> > listen(port,host,host,...)
> >   Listen for connections on the given port. [...]
> >
> > while inside octave i get:
> >
> > octave:2> help listen
> > listen(octave_socket,int)
> > See the listen() man
> >
> pages/home/francesco/octave/sockets-1.0.3/i686-pc-linux-gnu-api-v32/sockets.oct
> >
> > and i wasn't able to see the listen() man pages....
> >
> >
> >
>
>  here is the Octave results
>  octave:1> listen(22000,'192.168.1.100','debug')
>  listening on port 22000
>  trying to accept
>  connected
>  server: got connection from 192.168.1.100
>  trying to accept
>  waiting for command
>  received command !!!x after -0us
>
>
>  does this help? I was running on one machine on my LAN and my c# was at IP
> address 192.68.1.100
>
>  Doug
>

what's your Octave vers and on what OS is it running? i'm under linux,
3.0 vers compiled by sources, and i get this output:

octave:1> pkg load sockets
octave:2> listen(22000,'192.168.1.100','debug')
error: invalid conversion from string to real scalar
error: octave_base_value::int_value (): wrong type argument `sq_string'
panic: Segmentation fault -- stopping myself...
attempting to save variables to `octave-core'...
save to `octave-core' complete
Segmentation fault (core dumped)

and then i'm promped on terminal again. I'll try to get the binary
vers from ubuntu repositories and see what happens