[lwip-users] Re: about lwip TCP/IP paratmers

[yueyue papa]

My test case: 
 
lwip in           Echo server
211.xxx   --> 192.xxx.xx 

211.xxx  send 209 byte, and wait echo server to echo back.  If link break do connection again.  I do not want the link break. But in the No 94:  the connection is finished.

Is there any parameter I could changed to increase the resend times, resend .... , so as to not meet such kind of break.

90% link is break by lwIP first. Could I make lwIP not send the FIN to stop the connection

Lee

On Tue, Mar 17, 2009 at 5:38 PM, yueyue papa <address@hidden> wrote:

Hi all,

I meet the problem in lwIP working on the poor GPRS network.

I could see connection lost in the GPRS network: lwIP send FIN, so the connection is losted.

Where is the parameters I could config this

1. Resend time out
2. FIN send timeout

I could see there is out of sequance package,

What is the meaning of

#define TCP_OOSEQ_TIMEOUT        6U /* x RTO */

I changed the data to 60, but more worse

Lee

socketTest-tcp.port8000.pcap
Description: Binary data