[prev in list] [next in list] [prev in thread] [next in thread]
List: apache-bugdb
Subject: general/9082: Periodic persistent connections closed after POST
From: Mike McKnight <mcknight () signalsoftcorp ! com>
Date: 2001-10-27 15:05:31
[Download RAW message or body]
>Number: 9082
>Category: general
>Synopsis: Periodic persistent connections closed after POST
>Confidential: no
>Severity: critical
>Priority: medium
>Responsible: apache
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: apache
>Arrival-Date: Wed Dec 12 12:40:07 PST 2001
>Closed-Date:
>Last-Modified:
>Originator: mcknight@signalsoftcorp.com
>Release: 1.3.4
>Organization:
apache
>Environment:
SunOS host1 5.7 Generic_106541-08 sun4u sparc SUNW,Ultra-6
>Description:
We have some HTTP/1.1 persistent connections that remain open for a long while accessing the
JRun servlet engine. Requests come in on an infrequent basis. Periodically, I see a
message in the error_log like the following:
[info][client x.x.x.x] stopped connection before request completed
I need to understand what this message means. I know what it does, it closes the
socket write after a POST. How can this be prevented? Is this a known bug?
Looking at the snoop trace of this here are the following two packets:
ETHER: ----- Ether Header -----
ETHER:
ETHER: Packet 2933 arrived at 23:39:5.73
ETHER: Packet size = 465 bytes
ETHER: Destination = x, Sun
ETHER: Source = x,
ETHER: Ethertype = 0800 (IP)
ETHER:
IP: ----- IP Header -----
IP:
IP: Version = 4
IP: Header length = 20 bytes
IP: Type of service = 0x00
IP: xxx. .... = 0 (precedence)
IP: ...0 .... = normal delay
IP: .... 0... = normal throughput
IP: .... .0.. = normal reliability
IP: Total length = 451 bytes
IP: Identification = 43678
IP: Flags = 0x4
IP: .1.. .... = do not fragment
IP: ..0. .... = last fragment
IP: Fragment offset = 0 bytes
IP: Time to live = 64 seconds/hops
IP: Protocol = 6 (TCP)
IP: Header checksum = bbe2
IP: Source address = 192.168.61.69, 192.168.61.69
IP: Destination address = 192.168.61.70, 192.168.61.70
IP: No options
IP:
TCP: ----- TCP Header -----
TCP:
TCP: Source port = 59028
TCP: Destination port = 80 (HTTP)
TCP: Sequence number = 1952749920
TCP: Acknowledgement number = 3065128801
TCP: Data offset = 20 bytes
TCP: Flags = 0x18
TCP: ..0. .... = No urgent pointer
TCP: ...1 .... = Acknowledgement
TCP: .... 1... = Push
TCP: .... .0.. = No reset
TCP: .... ..0. = No Syn
TCP: .... ...0 = No Fin
TCP: Window = 32768
TCP: Checksum = 0xe5ef
TCP: Urgent pointer = 0
TCP: No options
TCP:
HTTP: ----- HyperText Transfer Protocol -----
HTTP:
HTTP: POST /lm/wli HTTP/1.1
HTTP: User-Agent: Removed Company Info/1.0
HTTP: Host: 192.168.61.70:80
HTTP: Connection: Keep-Alive
HTTP: Content-Type: text/xml
HTTP: Content-Length: 240
HTTP:
ETHER: ----- Ether Header -----
ETHER:
ETHER: Packet 2934 arrived at 23:39:5.74
ETHER: Packet size = 54 bytes
ETHER: Destination = x,
ETHER: Source = y
ETHER: Ethertype = 0800 (IP)
ETHER:
IP: ----- IP Header -----
IP:
IP: Version = 4
IP: Header length = 20 bytes
IP: Type of service = 0x00
IP: xxx. .... = 0 (precedence)
IP: ...0 .... = normal delay
IP: .... 0... = normal throughput
IP: .... .0.. = normal reliability
IP: Total length = 40 bytes
IP: Identification = 23488
IP: Flags = 0x4
IP: .1.. .... = do not fragment
IP: ..0. .... = last fragment
IP: Fragment offset = 0 bytes
IP: Time to live = 255 seconds/hops
IP: Protocol = 6 (TCP)
IP: Header checksum = 4d5b
IP: Source address = 192.168.61.70, 192.168.61.70
IP: Destination address = 192.168.61.69, 192.168.61.69
IP: No options
IP:
TCP: ----- TCP Header -----
TCP:
TCP: Source port = 80
TCP: Destination port = 59028
TCP: Sequence number = 3065128801
TCP: Acknowledgement number = 1952750331
TCP: Data offset = 20 bytes
TCP: Flags = 0x11
TCP: ..0. .... = No urgent pointer
TCP: ...1 .... = Acknowledgement
TCP: .... 0... = No push
TCP: .... .0.. = No reset
TCP: .... ..0. = No Syn
TCP: .... ...1 = Fin
TCP: Window = 8760
TCP: Checksum = 0xe68e
TCP: Urgent pointer = 0
TCP: No options
TCP:
HTTP: ----- HTTP: -----
HTTP:
HTTP: ""
HTTP:
>How-To-Repeat:
I have been unable to reproduce in a controlled test environment. This only happens
in our live deployed network at the customer site.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
[In order for any reply to be added to the PR database, you need]
[to include <apbugs@Apache.Org> in the Cc line and make sure the]
[subject line starts with the report component and number, with ]
[or without any 'Re:' prefixes (such as "general/1098:" or ]
["Re: general/1098:"). If the subject doesn't match this ]
[pattern, your message will be misfiled and ignored. The ]
["apbugs" address is not added to the Cc line of messages from ]
[the database automatically because of the potential for mail ]
[loops. If you do not include this Cc, your reply may be ig- ]
[nored unless you are responding to an explicit request from a ]
[developer. Reply only with text; DO NOT SEND ATTACHMENTS! ]
[prev in list] [next in list] [prev in thread] [next in thread]
Configure |
About |
News |
Add a list |
Sponsored by KoreLogic