[ECOS]problem with recent port of lwip

Simon Kallweit simon.kallweit@intefo.ch
Mon Sep 21 14:22:00 GMT 2009

Bob Brusa schrieb:
> Am 18.09.2009, 14:57 Uhr, schrieb Simon Kallweit 
> <simon.kallweit@intefo.ch>:
>> These sys_timeout log entries are normal, as far as I know. They are 
>> output when lwip checks for timeouts on blocking operations. You 
>> should probably just disable "System debugging" in the debug options.
>>>  Further: How do I send tcp-packet to port 7. Will a browser where I 
>>> enter send a tcp-package to port 7?
>> Use a telnet session. You should get echo's of whatever you send to 
>> the target. Note that telnet sends data when you hit the 'return' key.
>> Simon
> Hi
> I have continued to experiment and I am happy to report that the test 
> program httpd_sequential.c builds and executes. But only if I build 
> the library with a fixed IP-address for my board. When changing this 
> to DHCP, I can no longer reach the http-server running on my board.

Well, that's good to hear, at least part of it :)

> Using wireshark, I can see (see attachment) that the there is a 
> hopeful beginning of the DHCP configuration process of my board. But 
> there is never a fitting answer from the ZyXEL which implements the 
> DHCP-server on our LAN - at least as far as I see it, given my rather 
> limited experience with network issues..... Has anyone out there a 
> possible explanation what's going wrong here?

You may also post these issues directly on the lwip mailing list, as 
this looks like a problem between your ZyXEL DHCP server and lwip's DHCP 
client. DHCP did work great on my LAN, using a m0n0wall router as the 
DHCP server. I cannot have a look at your dump as I'm not currently at work.


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