Am 4. April 2020 08:04:32 MESZ schrieb Jochen Strohbeck <joc...@strohbeck.net>: >Now, in 2.1.x, the first http request after host and controller power >up is >served but still delayed for ca. 5s and I don't know if this is a >"feature" >or bug of ARP. >Please have a look at the commented 1st trace below.
Please send packet captures as pcap file, not as text. Regards, Simon >The second trace shows the normal behavior. The controller immediately >sends >out a ARP broadcast after receiving the first TCP msg. For me the host >is >expecting this broadcast but this is missing in the first trace. > >Who is to blame for the delay? The http server or the host? How to get >rid >of the delay if possible? I'm on windows 10. > >1880 73051.473650 de:bd:00:00:00:29 Broadcast ARP 60 >ARP Announcement >for >192.168.0.100 >-> controller power on > >1881 73205.861086 192.168.0.9 192.168.0.100 TCP 66 57961 → >80 [SYN] >Seq=0 >Win=64240 Len=0... >-> 1st http.get() request after power up (python requests) > >1882 73208.861658 192.168.0.9 192.168.0.100 TCP 66 [TCP >Retransmission] >57961 → 80 [SYN] Seq=0 Win=64240... >-> retrans after 3s > >1883 73210.857278 Dell_7a:2c:51 de:bd:00:00:00:29 ARP 42 >Who has >192.168.0.100? Tell 192.168.0.9 >-> host ARP request after 2s > >1884 73210.861936 192.168.0.9 192.168.0.100 TCP 66 57962 → >80 [SYN] >Seq=0 >Win=64240 Len=0 MSS=1460 WS=2... >1885 73210.862961 de:bd:00:00:00:29 Broadcast ARP 60 >Who has >192.168.0.9? >Tell 192.168.0.100 >1886 73210.862988 Dell_7a:2c:51 de:bd:00:00:00:29 ARP 42 >192.168.0.9 is >at >98:e7:43:7a:2c:51 >1887 73210.863678 de:bd:00:00:00:29 Dell_7a:2c:51 ARP 64 >192.168.0.100 >is at >de:bd:00:00:00:29 >1888 73210.863679 192.168.0.100 192.168.0.9 TCP 60 80 → >57962 [SYN, >ACK] >Seq=0 Ack=1 Win=2920 Len=0 MSS=1460 >: > >1990 74227.892538 de:bd:00:00:00:29 Broadcast ARP 60 >ARP Announcement >for >192.168.0.100 >1991 74248.600750 192.168.0.9 192.168.0.100 TCP 66 58120 → >80 [SYN] >Seq=0 >Win=64240 Len=0 MSS=1460... >1992 74248.601430 de:bd:00:00:00:29 Broadcast ARP 60 >Who has >192.168.0.9? >Tell 192.168.0.100 >1993 74248.601456 Dell_7a:2c:51 de:bd:00:00:00:29 ARP 42 >192.168.0.9 is >at >98:e7:43:7a:2c:51 >1994 74248.601813 192.168.0.100 192.168.0.9 TCP 60 80 → >58120 [SYN, >ACK] >Seq=0 Ack=1 Win=2920... > > > > >-- >Sent from: http://lwip.100.n7.nabble.com/lwip-users-f3.html > >_______________________________________________ >lwip-users mailing list >lwip-users@nongnu.org >https://lists.nongnu.org/mailman/listinfo/lwip-users _______________________________________________ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users