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Date:      Fri, 29 Dec 1995 13:23:37 -0500
From:      "Garrett A. Wollman" <wollman@lcs.mit.edu>
To:        Faried Nawaz <fn@pain.csrv.uidaho.edu>
Cc:        current@freebsd.org
Subject:   finger problem.
Message-ID:  <9512291823.AA30469@halloran-eldar.lcs.mit.edu>
In-Reply-To: <199512290307.TAA04622@pain.csrv.uidaho.edu>
References:  <199512290307.TAA04622@pain.csrv.uidaho.edu>

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<<On Thu, 28 Dec 1995 19:07:20 -0800, Faried Nawaz <fn@pain.csrv.uidaho.edu> said:

> finger @uidaho.edu
> finger @hotcity.com

Hmmm...  There look to be two different problems here...

13:16:16.216366 khavrinen.lcs.mit.edu.1195 > crow.csrv.uidaho.edu.finger: SFP 1329011561:1329011563(2) win 16728 <mss 1460,nop,wscale 0,nop,nop,timestamp 509768 0,nop,nop,ccnew 305> (DF)

We send one packet with all the information....

13:16:16.379675 crow.csrv.uidaho.edu.finger > khavrinen.lcs.mit.edu.1195: S 288832000:288832000(0) ack 1329011562 win 8192

They reply, acknowledging everything except the FIN bit.

13:16:16.379957 khavrinen.lcs.mit.edu.1195 > crow.csrv.uidaho.edu.finger: F 3:3(0) ack 1 win 16728 (DF)

We reply, resending the FIN bit.

13:16:16.516433 crow.csrv.uidaho.edu.finger > khavrinen.lcs.mit.edu.1195: . ack 4 win 8190

They acknowledge the FIN bit.

13:16:16.835325 crow.csrv.uidaho.edu.finger > khavrinen.lcs.mit.edu.1195: F 1:1(0) ack 4 win 8192

They then send a FIN bit of their own, without sending anything.

13:16:16.835577 khavrinen.lcs.mit.edu.1195 > crow.csrv.uidaho.edu.finger: . ack 2 win 16728 (DF)

And we acknowledge their close.

Here's the other one, where it looks like hotcity.com has gotten
itself /really/ confused.

13:17:06.198470 khavrinen.lcs.mit.edu.1197 > hotcity.com.finger: SFP 1339044514:1339044516(2) win 16728 <mss 1460,nop,wscale 0,nop,nop,timestamp 509868 0,nop,nop,ccnew 307> (DF)
13:17:12.000913 khavrinen.lcs.mit.edu.1197 > hotcity.com.finger: SFP 1339044514:1339044516(2) win 16728 <mss 1460,nop,wscale 0,nop,nop,timestamp 509879 0,nop,nop,ccnew 307> (DF)
13:17:12.633025 hotcity.com.finger > khavrinen.lcs.mit.edu.1197: SF 3506960969:3506960969(0) ack 1339044515 win 14335 <mss 512>
13:17:12.633308 khavrinen.lcs.mit.edu.1197 > hotcity.com.finger: F 3:3(0) ack 2 win 16727 (DF)
13:17:12.943619 hotcity.com.finger > khavrinen.lcs.mit.edu.1197: R 3506960971:3506960971(0) win 0
13:17:15.616483 hotcity.com.finger > khavrinen.lcs.mit.edu.1197: SF 3506960969:3506960969(0) ack 1339044515 win 14335 <mss 512>
13:17:15.616700 khavrinen.lcs.mit.edu.1197 > hotcity.com.finger: R 1339044515:1339044515(0) win 0
13:17:21.621782 hotcity.com.finger > khavrinen.lcs.mit.edu.1197: SF 3506960969:3506960969(0) ack 1339044515 win 14335 <mss 512>
13:17:21.622043 khavrinen.lcs.mit.edu.1197 > hotcity.com.finger: R 1339044515:1339044515(0) win 0
13:17:33.630237 hotcity.com.finger > khavrinen.lcs.mit.edu.1197: SF 3506960969:3506960969(0) ack 1339044515 win 14335 <mss 512>
13:17:33.630453 khavrinen.lcs.mit.edu.1197 > hotcity.com.finger: R 1339044515:1339044515(0) win 0

Both of these seem likely to be bugs in the other end's software.

-GAWollman

--
Garrett A. Wollman   | Shashish is simple, it's discreet, it's brief. ... 
wollman@lcs.mit.edu  | Shashish is the bonding of hearts in spite of distance.
Opinions not those of| It is a bond more powerful than absence.  We like people
MIT, LCS, ANA, or NSA| who like Shashish.  - Claude McKenzie + Florent Vollant



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