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From "chiasa.men" <chiasa....@web.de>
Subject [users@httpd] Apache + Squid Proxy: AH01991: SSL input filter read failed
Date Sun, 23 Apr 2017 19:48:53 GMT
Hi,
my apache is behind a squid proxy which is configured like that:
https_port 3128 accel cert=/cert.pem key=/cert.key defaultsite=ww1.example.com 
vhost 
acl server20_domains dstdomain ww1.example.com ww2.example.com 
http_access allow server20_domains 
cache_peer server20 parent 443 0 no-query originserver name=server20 
login=PASSTHRU ssl sslversion=6 
cache_peer_access server20 allow server20_domains 
cache_peer_access server20 deny all 

The idea was to send ww1 and ww2 to server20 which is hosting an apache 
webservice for both sites. 
It works but each time I visit one of those sites the following messages 
appear in apache's logs: 

[00:00:39.641665] --- 
[00:00:44.641883] [ssl:info] ssl_engine_io.c(675): (70007)The timeout 
specified has expired: [client wwwclient:47122] AH01991: SSL input filter read 
failed. 
[00:00:44.642170] [ssl:info] ssl_engine_io.c(675): (70007)The timeout 
specified has expired: [client wwwclient:47120] AH01991: SSL input filter read 
failed. 
[00:00:44.642442] [ssl:info] ssl_engine_io.c(675): (70007)The timeout 
specified has expired: [client wwwclient:47118] AH01991: SSL input filter read 
failed. 
[00:00:44.642570] [ssl:info] ssl_engine_io.c(675): (70007)The timeout 
specified has expired: [client wwwclient:47124] AH01991: SSL input filter read 
failed. 
[00:00:44.642977] [ssl:debug] ssl_engine_io.c(1016): -: [client wwwclient: 
47118] AH02001: Connection closed to child 11 with standard shutdown (server 
ww1.example.com:443) 
[00:00:44.643241] [ssl:debug] ssl_engine_io.c(1016): -: [client wwwclient: 
47124] AH02001: Connection closed to child 6 with standard shutdown (server 
ww1.example.com:443) 
[00:00:44.643373] [ssl:debug] ssl_engine_io.c(1016): -: [client wwwclient: 
47120] AH02001: Connection closed to child 5 with standard shutdown (server 
ww1.example.com:443) 
[00:00:44.643560] [ssl:debug] ssl_engine_io.c(1016): -: [client wwwclient: 
47122] AH02001: Connection closed to child 8 with standard shutdown (server 
ww1.example.com:443) 
[00:00:44.647119] [ssl:info] ssl_engine_io.c(675): (70007)The timeout 
specified has expired: [client wwwclient:47116] AH01991: SSL input filter read 
failed. 
[00:00:44.647347] [ssl:debug] ssl_engine_io.c(1016): -: [client wwwclient: 
47116] AH02001: Connection closed to child 3 with standard shutdown (server 
ww1.example.com:443) 

The corresponding squid access.log entries would be: 
[00:00:39] "GET https://ww1.example.com/a/ HTTP/1.1" 503 4033 "-" "ua" 
TCP_MISS:FIRSTUP_PARENT 
[00:00:39] "GET https://ww1.example.com/some.js HTTP/1.1" 304 240 "https:// 
ww1.example.com/a/" "ua" TCP_MISS:FIRSTUP_PARENT 
[00:00:39] "GET https://ww1.example.com/someother.js HTTP/1.1" 304 239 
"https://ww1.example.com/a/" "ua" TCP_MISS:FIRSTUP_PARENT 
[00:00:39] "GET https://ww1.example.com/more.js HTTP/1.1" 304 241 "https:// 
ww1.example.com/a/" "ua" TCP_MISS:FIRSTUP_PARENT 
[00:00:39] "GET https://ww1.example.com/some.css HTTP/1.1" 304 277 "https:// 
ww1.example.com/a/" "ua" TCP_MISS:FIRSTUP_PARENT 
[00:00:39] "GET https://ww1.example.com/someother.css HTTP/1.1" 304 277 
"https://ww1.example.com/a/" "ua" TCP_MISS:FIRSTUP_PARENT 
[00:00:39] "GET https://ww1.example.com/a.png HTTP/1.1" 304 241 "https:// 
ww1.example.com/a/" "ua" TCP_MISS:FIRSTUP_PARENT 


You can see that approximately after 5s the timeout happens. Is it a message 
to worry about? (it is just "info" labled) Why does it occur?

I sent basically the same problem to squid's mailing list because I supposed 
squid was the problematic part here. But since they suggested apache could be 
the weirdo, I'm asking here
Thanks for your help

Regards 
Chia 

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