Re[2]: [lwip-users] lwIP Unix Contrib

[Guido Moritz]

OK, I think I should learn to play with the opts before starting
debugging of 3rd party implementations. Thank you for your help.
MEMP_NUM_SYS_TIMEOUT 15 is working very well...and here we go!

Guido

Antwort auf Mail vom 02.09.2008, 12:38 Uhr:
Betreff: [lwip-users] lwIP Unix Contrib

> On Mon, 2008-09-01 at 17:28 +0200, Guido Moritz wrote:
>> Hi,
>> 
>> I'm trying to set up the contrib for lwIP for my Linux. But it doesn't
>> work and after 2 days of looking for the error I'm saturated enough to
>> ask you for some help.
>> I made the "simhost" example starting. I can also ping it. but
>> whenever I request another part of the example (Web Server, Telnet,
>> ...) I get the below posted output:
>> Host at 192.168.5.2 mask 255.255.255.0 gateway 192.168.5.1
>> System initialized.
>> TCP/IP initialized.
>> Applications started.
>> Assertion "sys_timeout: timeout != NULL" failed at line 195 in 
>> ../../../../../lwip/src/core/sys.c
>> 
>> Is this a known bug? And how can it be solved? Thanks for helping ...

> It's not a known bug, at least not known to me.  Despite being the
> maintainer of the unix port (largely because no one else volunteered,
> and I think it's important to have it) I've not been able to test it
> recently, so it wouldn't surprise me if I'd made a mistake updating it
> for 1.3.0.

> Has anyone else run this port recently and can verify Guido's problem?

> The error comes from a failure to allocate memory from lwIP's pool.
> Have you made any changes to the lwipopts.h header as part of the
> unixsim example?  It could just be that the value specified there for
> MEMP_NUM_SYS_TIMEOUT is too small.  The unixsim example sets it to 3,
> but I notice that the windows port uses 15.  You could try experimenting
> with this setting.

> Kieran