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[lwip-users] retransmission every 9 pacakets.
From: |
Yang |
Subject: |
[lwip-users] retransmission every 9 pacakets. |
Date: |
Wed, 12 Sep 2007 16:55:34 +0800 |
Hi all.
I am useing Lwip 1.11 for a few months.It seems to work fine until
I found it would do a retransmission every 9 tcp packets!. ack was sent
back every 2 pacakets.
I found out this with ethereal. It seem that after 9 packets, lwip
stop to send the next packet and wait for an ack until timeout and make
a retransmission. I knew that it is some how connected to the
TCP_TMR_INTERVAL and TCP_FAST_INTERVAL as it disgussed in this list .
I set them as fallow
#ifndef TCP_TMR_INTERVAL
#define TCP_TMR_INTERVAL 250
#ifndef TCP_FAST_INTERVAL
#define TCP_FAST_INTERVAL TCP_TMR_INTERVAL
I had try to set TCP_FAST_INTERVAL as TCP_TMR_INTERVAL+50( or 100) ,
the result is same!
How can I avoid these restransmission ?
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡Yang
address@hidden
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡2007-09-12
- [lwip-users] retransmission every 9 pacakets.,
Yang <=