[lwip-devel] [bug #18960] Slow / incomplete HTTP responses.

[anonymous]

Follow-up Comment #3, bug #18960 (project lwip):

Yes there does seem to be some kind of timing issue going on .... 
it seems that sometimes the address of pcb->remote_port resolves to an
illegal address and causes gdb to  dump out. If I printf the address of
pcb->remote_port the problem is not evident.

I have played with some of the MSS size settings and timing in lwipopts but
everything else is as it comes.

Note my printf is directed to a custom crt console output on the gdb
connected serial port.

The CPU is a 'soft' FPGA based 32 bit risc called MANIK running at  50 Mhz  (
www.niktech.com )  ... this is currently running on a Xilinx Spartan 3E 
starter kit board 
http://www.xilinx.com/xlnx/xebiz/designResources/ip_product_details.jsp?key=HW-SPAR3E-SK-UShttp://www.xilinx.com/xlnx/xebiz/designResources/ip_product_details.jsp?key=HW-SPAR3E-SK-US
 
and utilises the 'easymac' module ( also from Niktech ). The code is compiled
with GCC 3.4.4 single thread model crosscompiler for the Manik on an FC6
platform. 
Niktech provides all the VHDL sources, and GPL tools to build the  platform.

I am using the LWIP 'easymac' API demo from the Niktech site. I am not
entirely sure which version of LWIP the Niktech demo is based on however no
changes to LWIP are required to compile. I am using  1.2  

Other than this problem ( pointer and erratic web ) LWIP is excellent. I can
ping -f , do a http request and ARP and it seems to work well.

lwip opts attached.

(file #11937)
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File name: lwipopts.h                     Size:12 KB


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