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Date:      Wed, 13 Mar 2002 01:39:53 +0000 (GMT)
From:      Dmitry Koltsov <root@hostonfly.com>
To:        freebsd-net@FreeBSD.ORG
Subject:   Apache/TCP stack issues
Message-ID:  <20020313013953.C69396B340@mail2.hostonfly.net>

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Hello

I have some issues with TCP stack  and/or Apache.
Issue:
I'm getting "Connection refused" error when trying to connect to Apache over Internet when packet loss is 1-2%. Not all connection attempts fail but about 3% of attempts.
When I'm trying to connect over local network(from another machine and localhost) in the same time, all is ok. 
In order to get this statistics, I've made 20000 attempts from each place in the same time.

I guess apache is ok because from local network and localhost it gives no errors.

Is there solution?


Couple of examples:

00:55:24.794637 195.252.103.127.4389 > 216.65.107.31.80: S 15459564:15459564(0) win 8192 <mss 536,nop,nop,sackOK> (DF)
00:55:24.794720 216.65.107.31.80 > 195.252.103.127.4389: S 2478638582:2478638582(0) ack 15459565 win 33232 <mss 1460> (DF)
00:55:26.521535 216.65.107.31.80 > 195.252.103.127.4389: R 1:1(0) ack 1 win 33232 (DF)
00:55:27.813385 195.252.103.127.4389 > 216.65.107.31.80: S 15459564:15459564(0) win 8192 <mss 536,nop,nop,sackOK> (DF)
00:55:27.813485 216.65.107.31.80 > 195.252.103.127.4389: S 2939404798:2939404798(0) ack 15459565 win 33232 <mss 1460> (DF)
00:55:27.994115 195.252.103.127.4389 > 216.65.107.31.80: . ack 3834201081 win 8576 (DF)
00:55:27.994156 216.65.107.31.80 > 195.252.103.127.4389: R 2478638583:2478638583(0) win 0
00:55:28.042403 195.252.103.127.4389 > 216.65.107.31.80: P 1:309(308) ack 3834201081 win 8576 (DF)
00:55:28.042466 216.65.107.31.80 > 195.252.103.127.4389: R 2478638583:2478638583(0) win 0
00:55:28.217906 195.252.103.127.4389 > 216.65.107.31.80: R 15459565:15459565(0) win 0


00:55:26.893251 151.27.40.210.1560 > 216.65.107.31.80: S 37780527:37780527(0) win 8192 <mss 536,nop,nop,sackOK> (DF)
00:55:26.893329 216.65.107.31.80 > 151.27.40.210.1560: S 2578149080:2578149080(0) ack 37780528 win 33232 <mss 1460> (DF)
00:55:27.300599 216.65.107.31.80 > 151.27.40.210.1560: R 1:1(0) ack 1 win 33232(DF)
00:55:27.316952 151.27.40.210.1560 > 216.65.107.31.80: . ack 1 win 8576 (DF)
00:55:27.317038 216.65.107.31.80 > 151.27.40.210.1560: R 2578149081:2578149081(0) win 0
00:55:27.467521 151.27.40.210.1560 > 216.65.107.31.80: P 1:369(368) ack 1 win 8576 (DF)
00:55:27.467567 216.65.107.31.80 > 151.27.40.210.1560: R 2578149081:2578149081(0) win 0


00:38:52.468064 194.85.102.167.46350 > 216.65.107.31.80: S 1156823521:1156823521 (0) win 16384 <mss 1460> (DF)
00:38:52.468137 216.65.107.31.80 > 194.85.102.167.46350: S 4104358926:4104358926 (0) ack 1156823522 win 33580 <mss 1460> (DF)
00:38:55.462633 216.65.107.31.80 > 194.85.102.167.46350: S 4104358926:4104358926 (0) ack 1156823522 win 33580 <mss 1460> (DF)
00:38:57.544738 216.65.107.31.80 > 194.85.102.167.46350: R 1:1(0) ack 1 win 33580 (DF)


Best regards,
 Dmitry Koltsov
 Host On Fly S.A.
 tel: + 7 812 9404403
 tel: + 41 78 8286002
 fax: + 1 775 2426205
 ICQ: 44656213
 mailto:root@hostonfly.com





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