[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Re: [lwip-users] tcp_sndbuf always returns 0
From: |
WU Rui-Qing |
Subject: |
Re: Re: [lwip-users] tcp_sndbuf always returns 0 |
Date: |
Fri, 17 Jul 2009 20:5:1 +0800 |
The server runs on a platform with TI DSP C6415,uC/OS-II and LwIP1.3.1,its IP
is 192.168.2.21.The client runs on host ,its IP is 192.168.2.21.After the
client connect to the server ,the server send data to the client .the packets
captured on PC host shows that client sends a duplicated-ACK for SEQ=3894,the
server retransmits the packet SEQ=3894. I use the default setting in opt.h.
Thank you very much !
>On Thu, 2009-07-16 at 23:39 +0800, WU Rui-Qing wrote:
>> Hi,
>>
>> I want to port httpd.c as a high-speed server, it reads data from a
>> FIFO and send data to TCP client. After it works for a moment, it
>> slows down. tcp_sndbuf always returns 0.
>
>Suggests that lwIP is waiting for an ACK for some of its packets from
>the other end. Could you send a packet capture (e.g. from wireshark) so
>we can see if there's a problem?
>
>Kieran
>
>
>
>_______________________________________________
>lwip-users mailing list
>address@hidden
>http://lists.nongnu.org/mailman/listinfo/lwip-users
WU Rui-Qing
address@hidden
2009-07-17
ncu_demon_rw.c
Description: Binary data
ABCDEFG.pcap
Description: Binary data