Re: Re: W800

[Mal Lansell <mal@xxxxxxxxxxx>]

Hmmm, I can't bind a socket to the loopback address (127.0.0.1) - I get
a WSAEADDRNOTAVAIL error.
Are you sure you don't mean the wildcard address (0.0.0.0) instead?
This is what xPLHal binds to, and if I use it then I can communicate
with the xPLHub just fine.

The trouble is, I thought part of the V3 fixes was to stop using
0.0.0.0, because on machine with multiple network cards this means you
pick up messages from both.

Mal


Mal Lansell wrote:

> That doesn't happen with the latest version - the hub sends messages
> directly to the port and ip listed in the heatbeat message.
> However, you say that it should send to the loopback address, and that
> apps should bind to the loopback address.  This is different from what
> Tom has been saying, which is that they should bind to a real local IP
> (might explain some of the problems with xPLHal's hub and V3 apps!)
>
> Anyway, I'll try changing the code to use the loopback address, and
see
> what happens.
>
> Thanks
>
> Mal
>
> John B wrote:
>
> > Hi Mal,
> >
> > > OK, the problem is a sockets related issue.  I used to bind
> > > my socket to INADDR_ANY, which works fine with the hub in
> > > xPLHal.  However, if I specify a ListenOnAddress in the
> > > registry, then I have to bind to that instead, but I don't
> > > get any messages from the hub in xPLHal (it's as if the
> > > xPLHal hub doesn't work with ListenOnAddresses)
> >
> > I think there is an issue with your hub.
> >
> > When your hub sends out packets to it's hub clients, it seems to
be
> > broadcasting them to 255.255.255.255, rather than just sending
them out
> > over the loopback address.
> >
> > So one machine with your hub installed is flooding the network
with
> > packets to ports 50000, 50001 etc.
> > (at least that's what Ethereal shows)
> >
> > Hub clients (like the W800) should be binding to the loopback
address.
> >
> > The "ListenOn" and "ListenTo" registry stuff
is only used for the hub's
> > base port (3865).
> > All communication with hub clients should be via the loopback
interface
> > - otherwise traffic will spill onto the local network.
> >
> > Regards,
> >
> > John
> >
> >
> > xPL Links: http://www.xplproject.org.uk http://www.xplhal.com
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