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[Bug 37770] - proxy: error reading status line from remote server (null)

 

 

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bugzilla at apache

Jun 26, 2006, 6:47 AM

Post #1 of 3 (25004 views)
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[Bug 37770] - proxy: error reading status line from remote server (null)

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------- Additional Comments From ob [at] dorrboel 2006-06-26 13:47 -------
Same problem, here :

Configuration : Apache 2.2.2 (with worker MPM) on Solaris 9 proxying to an IIS
6.0 back-end server.

No core dump produced.

As I understand, truss (see below) shows that the process uses a file (25, in
the example below) handle to communicate with the back-end server but does not
check whether it is still usable or not.
This file handle seems to be used from the connection pool ("As of Apache 2.1,
the ability to use pooled connections to a backend server is available").

Result from truss :
3313/19: 3.9623 read(25, 0xFDA7B997, 1) Err#131
ECONNRESET
3313/19: 3.9624 write(11, 0xFDA79938, 126) = 126
3313/19: [. M o n J u n 2 6 1 4 : 3 7 : 3 6 2 0 0 6 ] [ d e
b u
3313/19: g ] p r o x y _ u t i l . c ( 2 1 4 1 ) : p r o x y :
H T
3313/19: T P : c o n n e c t i o n c o m p l e t e t o 1 3
6 . 1
3313/19: 7 3 . 2 1 . 2 4 3 : 8 8 8 8 ( e i c i t e s t v s 0 9 )\n
3313/19: 3.9628 writev(25, 0xFDA7B780, 3) Err#32
EPIPE
3313/19: iov_base = 0x003F2278 iov_len = 1057
3313/19: P O S T / E i c i - A D M / A u t h e n t i c a t i o n /
u s
...
3313/1: 3.9628 Received signal #13, SIGPIPE, in read() [ignored]
3313/19: 3.9635 write(11, 0xFDA795B8, 123) = 123
3313/19: [. M o n J u n 2 6 1 4 : 3 7 : 3 6 2 0 0 6 ] [ i n
f o
3313/19: ] [. c l i e n t 1 3 6 . 1 7 3 . 2 1 . 2 4 3 ] ( 3 2 )
B r
3313/19: o k e n p i p e : c o r e _ o u t p u t _ f i l t e
r : w
3313/19: r i t i n g d a t a t o t h e n e t w o r k\n
3313/19: 3.9639 read(25, 0x003D6208, 8000) = 0
3313/19: 3.9641 write(11, 0xFDA77910, 158) = 158
3313/19: [. M o n J u n 2 6 1 4 : 3 7 : 3 6 2 0 0 6 ] [ e r
r o
3313/19: r ] [. c l i e n t 1 3 6 . 1 7 3 . 2 2 . 1 3 7 ] p r o
x y
3313/19: : e r r o r r e a d i n g s t a t u s l i n e f r
o m
3313/19: r e m o t e s e r v e r e i c i t e s t v s 0 9 , r
e f
3313/19: e r e r : h t t p : / / e i c i a p p q u a / G E D A /\n
3313/19: 3.9656 write(11, 0xFDA77888, 186) = 186
3313/19: [. M o n J u n 2 6 1 4 : 3 7 : 3 6 2 0 0 6 ] [ e r
r o
3313/19: r ] [. c l i e n t 1 3 6 . 1 7 3 . 2 2 . 1 3 7 ] p r o
x y
3313/19: : E r r o r r e a d i n g f r o m r e m o t e s e
r v
3313/19: e r r e t u r n e d b y / E i c i - A D M / A u t h e
n t
3313/19: i c a t i o n / u s e r i n f o s e c . a s p , r e f e r
e r
3313/19: : h t t p : / / e i c i a p p q u a / G E D A /\n
3313/19: 3.9658 write(11, 0xFDA798D0, 111) = 111
3313/19: [. M o n J u n 2 6 1 4 : 3 7 : 3 6 2 0 0 6 ] [ d e
b u
3313/19: g ] p r o x y _ u t i l . c ( 1 8 1 6 ) : p r o x y :
H T
3313/19: T P : h a s r e l e a s e d c o n n e c t i o n f o r
3313/19: ( e i c i t e s t v s 0 9 )\n
3313/19: 3.9661 close(25) = 0
3313/19: 3.9664 read(24, 0x003EE268, 8000) Err#11
EAGAIN
3313/19: 3.9666 writev(24, 0xFDA7BBF0, 2) = 729
3313/19: iov_base = 0x003F4280 iov_len = 188
3313/19: H T T P / 1 . 1 5 0 2 P r o x y E r r o r\r\n D a t e :


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bugzilla at apache

Jun 26, 2006, 8:54 AM

Post #2 of 3 (24510 views)
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[Bug 37770] - proxy: error reading status line from remote server (null) [In reply to]

DO NOT REPLY TO THIS EMAIL, BUT PLEASE POST YOUR BUG·
RELATED COMMENTS THROUGH THE WEB INTERFACE AVAILABLE AT
<http://issues.apache.org/bugzilla/show_bug.cgi?id=37770>.
ANY REPLY MADE TO THIS MESSAGE WILL NOT BE COLLECTED AND·
INSERTED IN THE BUG DATABASE.

http://issues.apache.org/bugzilla/show_bug.cgi?id=37770





------- Additional Comments From braini [at] gmx 2006-06-26 15:54 -------
(In reply to comment #24)
> Does anybody still observe segfaults with 2.2.2 or is it "only" the "error
reading
> status line" that is left?

Same problem here:
No sefaults, but error reading status line
Config: Solaris 8, MPM Worker, HTTPd 2.2.2 mod_proxy to IIS 6 on Windows
No error with MPM Prefork and HTTPd 2.0.54


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bugzilla at apache

Jul 5, 2006, 9:05 AM

Post #3 of 3 (24431 views)
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[Bug 37770] - proxy: error reading status line from remote server (null) [In reply to]

DO NOT REPLY TO THIS EMAIL, BUT PLEASE POST YOUR BUG·
RELATED COMMENTS THROUGH THE WEB INTERFACE AVAILABLE AT
<http://issues.apache.org/bugzilla/show_bug.cgi?id=37770>.
ANY REPLY MADE TO THIS MESSAGE WILL NOT BE COLLECTED AND·
INSERTED IN THE BUG DATABASE.

http://issues.apache.org/bugzilla/show_bug.cgi?id=37770


braini [at] gmx changed:

What |Removed |Added
----------------------------------------------------------------------------
Status|NEEDINFO |NEW




------- Additional Comments From braini [at] gmx 2006-07-05 16:05 -------
With the following 'Murxaround' it's working now:
- Added 'keeplive Off' in httpd.conf -> No effect
- Set keep-alive timeout to 1 day in IIS -> No effect
- Added
'SetEnv force-proxy-request-1.0 1'
'SetEnv proxy-nokeepalive 1'
in httpd.conf
It's working now without errors since 30 hours...
Don't know if first steps were necessary, I let them in place



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