Re: [lwip-users] Support required for LwIP:URGENT

[Robin Iddon]

You need to make your PC wait longer before generating reset. 

45ms doesn't seem like a very long timeout. 

Are you using TCP or UDP or just IP?  You say reset, so I assume TCP, 
i.e. the PC is generating a TCP RST message.

Is the connection long lived (in other words, does the PC open the 
connection at application start up, then send a request once ever 100ms 
for data over that connection, or does the PC do a SYN/PSH/FIN sequence 
each 100ms).

Are you able to run something like wireshark to capture *ALL* traffic 
to/from your PC's MAC address - specifically I would want to see ARP, IP 
and ICMP traffic.

What operating system is the PC running?

Robin


Nitin AGARWAL wrote:
> Hello,
>
> I am using LwIP 1.2 in one of my applications. I am using ARM9 micro as
> server. I am facing a problem of reseting the connection. Client (PC) is
> requesting data (~9000 bytes) from ARM9 after every 100ms. ARM9 is using FIQ
> for ~45ms out of 100ms. The request from PC is not syncronised with ARM9, So
> sometimes the request is coming just before entering into FIQ. So in this
> case PC is generating reset. If the request is coming after FIQ (the 9000
> bytes are sent within 55ms), there is no resetting of connection and PC
> receives the correct data.
>
> Could you pls tell me what is the problem? And how I can solve it so that
> there is no reset in the connection?
>
> Regards,
> Nitin
>
>
>
>
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>
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