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Re: [lwip-users] lwip 1.3.2 waiting for ACK problem
From: |
Peter Pavlov |
Subject: |
Re: [lwip-users] lwip 1.3.2 waiting for ACK problem |
Date: |
Tue, 13 Mar 2012 15:52:55 +0200 |
User-agent: |
Opera Mail/11.61 (Win32) |
I recorded communication between Firefox and controller with embedded http
server (based on lwip).
Controller IP 192.168.0.32
PC IP 192.168.0.31
Log 1.pcap shows part of communication when picture was loading in
Firefox. As you can see lwip sends 2 or 4 packets with image segments fast
and then waits for ack. Why only 2 or 4 can be sent? According my
investigation problem relates to tcp_output(struct tcp_pcb *pcb) in
tcp_out.c It would be great to play with number of segments to send
before moment when ack is required.
Peter Pavlov
1.pcap
Description: Binary data
lwipopts.h
Description: Binary data