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RE: [lwip-users] Not responding to TCP keep-alives
From: |
Tom C. Barker |
Subject: |
RE: [lwip-users] Not responding to TCP keep-alives |
Date: |
Mon, 16 Aug 2004 09:31:48 -0700 |
David,
The only suggestions I could make would be to turn on TCP_DEBUG,
TCP_RST_DEBUG, and SOCKETS_DEBUG to see if anything comes up.
Also, it looks like the only other options (opt.h has LCP_ECHOINTERVAL)
seem to apply to a server keepalive.
Tom
-----Original Message-----
From: address@hidden
[mailto:address@hidden Behalf
Of David Haas
Sent: Monday, August 16, 2004 9:06 AM
To: Mailing list for lwIP users
Subject: [lwip-users] Not responding to TCP keep-alives
Hi all,
I am having trouble with LWIP not responding to TCP keep alives. Here
are some frames captured by ethereal and you will see that LWIP
(192.168.10.242) stops responding to the keep-alive requests from
Windows 2000 (192.168.10.252). Does anyone have any incite how to fix this?
No. Time Source Destination Protocol
Info
74 3.427283 192.168.10.242 192.168.10.252 TCP
1101 > 1266 [ACK] Seq=1 Ack=48755 Win=404 Len=0
75 8.399604 192.168.10.252 192.168.10.242 TCP
1266 > 1101 [ACK] Seq=48755 Ack=1 Win=17520 Len=404
76 8.664309 192.168.10.242 192.168.10.252 TCP
[TCP ZeroWindow] 1101 > 1266 [ACK] Seq=1 Ack=49159 Win=0 Len=0
77 9.100314 192.168.10.252 192.168.10.242 TCP
1266 > 1101 [ACK] Seq=49159 Ack=1 Win=17520 Len=1
78 10.101838 192.168.10.252 192.168.10.242 TCP
[TCP Keep-Alive] 1266 > 1101 [ACK] Seq=49159 Ack=1 Win=17520 Len=1
80 12.104858 192.168.10.252 192.168.10.242 TCP
[TCP Keep-Alive] 1266 > 1101 [ACK] Seq=49159 Ack=1 Win=17520 Len=1
81 16.110865 192.168.10.252 192.168.10.242 TCP
[TCP Keep-Alive] 1266 > 1101 [ACK] Seq=49159 Ack=1 Win=17520 Len=1
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