[lwip-users] Re: lwIP - tcp_out.c CVS Rev. 1.79

[Simon Goldschmidt]

Hi,

first you should go to savannah.nongnu.org/projects/lwip and subscribe for the 
lwip-users and lwip-devel mailing lists. Then you should file a bug report 
including detailed data what went wrong (a debug-log, lwipopts.h file and, if 
applicable, a packet trace is always helpful).

Since you already seem to be able to debug this, an analysis of the pbuf queue 
making problems would also help.

Thanks,
Simon

> 
> Hello Mr. Goldsmith,
> 
> I am successfully integrated lwIP in my project and I am interested in the
> new TCP timestamps option.
> I loaded latest revisions from CVS but unfortunately I have a problem
> beginning with tcp_out.c CVS Rev. 1.79.
> When I send TCP data (from my HTTP server) then lwip hangs in
> tcp_enqueue()
> line 365,  pbuf_cat() call and never comes back from this call (seems not
> to
> find a queue end).
> I thougt there might be a a problem with "free the first (header-only).."
> inserted code above, so I tried to add old_q->next = NULL; before the
> pbuf_free(old_q) (but I don't really what I did, only a test, not so
> familiar
> with inside lwIP).
> Now the pbuf_cat() was sucessful but I run in LWIP_ASSERT("tcp_receive:
> valid
> queue length"..) in tcp_in.c (CVS Rev. 1.107, line 875).
> 
> Sorry, I don't know whether this is the correct way to ask for a problem
> solution in this group, I am just signed in Savannah because I cannot test
> further revisions with this.
> 
> Best regards
> A. Foerster
> 
> _______________________________________________
>   Nachricht geschickt von/durch Savannah
>   http://savannah.nongnu.org/

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