Re: [lwip-users] Remote tcp connection with TAPIF interface

[Leon Woestenberg]

Hello all,

K.J. Mansley wrote:

> On Fri, 2004-08-27 at 16:09, address@hidden
> wrote:
>  
>
> > > The problem is that when the client (A) tries to connect to (B)
> > > 192.168.0.2 address, port 19 (server application) it returns an error with
> > > value: -3.
> > > It seems that in the "etharp_output(...)" function in the client side, all
> > > the items in the "arp_table" are set to ETHARP_STATE_EMPTY state. 
> > >      
> > >
> > > How the ARP query has been made in the code in order for the "arp_table"
> > > to be filled ?
> > >      
>
> I think it should automatically queue packets while it sends out an ARP
> query to find the mac address of the server.  Could you get a packet
> trace using tcpdump or ethereal in order to check if this is actually
> happening, and if the request is being responded to with an ARP reply?
>
> There have been a couple of minor errors reported in the ARP code
> recently, so this could be another.  I'm not familiar enough with that
> bit of lwIP to comment though.  Hopefully someone with more knowledge
> will be able to!
>
>  
The ARP queueing code is new and I suspect your problem may lie there. 
Unfortunately I do not have
the time to debug it right now, but I will help find the bug if you can 
provide me with debug output of
lwIP.

Please test with ETHARP_QUEUEING disabled to see if the problem disappears.

Regards,

Leon.