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| From: | David Haas |
| Subject: | [lwip-users] Not responding to TCP keep-alives |
| Date: | Mon, 16 Aug 2004 12:05:34 -0400 |
| User-agent: | Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.1) Gecko/20040707 |
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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