Hi,
There seems to be a problem with TCP in 2.2.15pre10. The same problem occurs
in at least 2.2.14pre5, 2.2.14pre9 and 2.2.15pre10.
Following is the tail end of a tcpdump of an attempt to pick up the latest
netscape communicator using ncftpget. The command line used was:
ncftpget -F ftp://205.188.247.193/pub/communicator/english/4.72/windows/windows95_or_nt/complete_install/cc32e472.exe
Everything looks fine until the packet where we issue the PASV command,
but then we don't seem to see their ack/reply. We issue the same packet
again, and they try sending their reply a few times, but we seem to be
missing it.
This same transfer worked without problems under 2.0.35.
Cheers,
Chris,
OnTheNet
=== real ip address changed to 192.168.0.1 to protect the guilty ===
14:17:13.460456 192.168.0.1.1261 > 205.188.247.193.21: P 209:228(19) ack 6908 win 32120 <nop,nop,timestamp 911519 4270925>
Data (19): SIZE cc32e472.exe^M^J (DF)
14:17:14.140094 205.188.247.193.21 > 192.168.0.1.1261: P 6908:6922(14) ack 228 win 47784 <nop,nop,timestamp 4270926 911519>
Data (14): 213 19090910^M^J (DF) [tos 0x10]
14:17:14.140349 192.168.0.1.1261 > 205.188.247.193.21: P 228:247(19) ack 6922 win 32120 <nop,nop,timestamp 911587 4270926>
Data (19): MDTM cc32e472.exe^M^J (DF)
14:17:14.832064 205.188.247.193.21 > 192.168.0.1.1261: P 6922:6942(20) ack 247 win 47784 <nop,nop,timestamp 4270928 911587>
Data (20): 213 20000207200220^M^J (DF) [tos 0x10]
14:17:14.833636 192.168.0.1.1261 > 205.188.247.193.21: P 247:253(6) ack 6942 win 32120 <nop,nop,timestamp 911656 4270928>
Data (6): PASV^M^J (DF)
14:17:16.044796 205.188.247.193.21 > 192.168.0.1.1261: P 6942:6993(51) ack 253 win 47784 <nop,nop,timestamp 4270930 911656>
Data (51): 227 Entering Passive Mode (205,188,247,213,94,55)^M^J (DF) [tos 0x10]
14:17:29.949927 192.168.0.1.1261 > 205.188.247.193.21: P 247:253(6) ack 6942 win 32120 <nop,nop,timestamp 913168 4270928>
Data (6): PASV^M^J (DF)
14:17:30.629622 205.188.247.193.21 > 192.168.0.1.1261: . ack 253 win 47784 <nop,nop,timestamp 4270957 911656> (DF) [tos 0x10]
14:17:58.165014 205.188.247.193.21 > 192.168.0.1.1261: P 6942:6993(51) ack 253 win 47784 <nop,nop,timestamp 4271008 911656>
Data (51): 227 Entering Passive Mode (205,188,247,213,94,55)^M^J (DF) [tos 0x10]
14:18:46.260365 205.188.247.193.21 > 192.168.0.1.1261: P 6942:6993(51) ack 253 win 47784 <nop,nop,timestamp 4271098 911656>
Data (51): 227 Entering Passive Mode (205,188,247,213,94,55)^M^J (DF) [tos 0x10]
14:19:29.831691 192.168.0.1.1261 > 205.188.247.193.21: F 253:253(0) ack 6942 win 32120 <nop,nop,timestamp 925156 4270928> (DF)
14:19:30.510714 205.188.247.193.21 > 192.168.0.1.1261: . ack 254 win 47784 <nop,nop,timestamp 4271180 925156> (DF) [tos 0x10]
14:19:30.522295 205.188.247.193.21 > 192.168.0.1.1261: FP 6993:7030(37) ack 254 win 47784 <nop,nop,timestamp 4271180 925156>
Data (37): 221 You could at least say goodbye.^M^J (DF) [tos 0x10]
14:19:30.522411 192.168.0.1.1261 > 205.188.247.193.21: R 1204733615:1204733615(0) win 0 [tos 0x10]
=== end ===
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