[SOLVED] Squid gives "The requested URL could not be retrieved" on particular query.

ZackFair · 02-15-2013, 11:32 AM

Hi,

I have a server that has internet connection (1) and one that hasn't (2).
On (1) I have Squid server with config:

acl manager proto cache_object
acl localhost src 127.0.0.1/32 ::1
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1
acl portal1 src 192.168.153.40/32
acl mediation1 src 172.21.78.138/32
acl mediation2 src 172.21.78.139/32
acl SSL_ports port 443
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 # https
acl CONNECT method CONNECT
http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow mediation1
http_access allow mediation2
http_access allow portal1
http_access allow localhost
http_access deny all
http_port 3128 transparent
coredump_dir /var/spool/squid
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern . 0 20% 4320
visible_hostname "webcol-ctip01"
cache deny all
request_body_max_size 10 MB
client_request_buffer_max_size 20 MB
request_header_max_size 10 MB

On (2) I have complex application that requires to send some data via POST to external host. I am able to connect to proxy:

# export http_proxy=http://192.168.153.40:3128
# wget -O - http://google.com
--2013-02-15 21:20:55-- http://google.com/
Connecting to 192.168.153.40:3128... connected.
Proxy request sent, awaiting response... 301 Moved Permanently
Location: http://www.google.com/ [following]
--2013-02-15 21:20:55-- http://www.google.com/
Connecting to 192.168.153.40:3128... connected.
Proxy request sent, awaiting response... 302 Moved Temporarily
Location: http://www.google.ru/ [following]
--2013-02-15 21:20:55-- http://www.google.ru/
Connecting to 192.168.153.40:3128... connected.
Proxy request sent, awaiting response... 200 OK
Length: unspecified [text/html]
Saving to: “STDOUT”
...etc...

But specific request that I'm sending in application gives me error. Here is reproduced error with curl:
#curl -k --request POST --header "Content-type: text/xml" --data @req.xml http://some-domain.webex.com/WBXServ...iew/XMLService

Invalid Request error was encountered while trying to process the request:

POST /WBXService/preview/XMLService HTTP/1.1
User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.13.1.0 zlib/1.2.3 libidn/1.18 libssh2/1.2.2
Host: some-domain.webex.com
Accept: */*
Proxy-Connection: Keep-Alive
Content-Type: text/xml
Content-Length: 1510
Expect: 100-continue

Some possible problems are:

Missing or unknown request method.

Missing URL.

Missing HTTP Identifier (HTTP/1.0).

Request is too large.

Content-Length missing for POST or PUT requests.

Illegal character in hostname; underscores are not allowed.

HTTP/1.1 "Expect:" feature is being asked from an HTTP/1.0 software.

Your cache administrator is root.

Meanwhile in access log:

1360949609.433 0 172.21.78.138 NONE/417 4317 POST http://some-domain.webex.com/WBXServ...iew/XMLService - NONE/- text/html

OS CentOS 6.3 x64
Squid 3.1.10

What am I missing here?

ZackFair · 02-18-2013, 02:03 AM

Anyone?

ZackFair · 02-18-2013, 03:52 AM

Solved.

Either update to 3.2 or add "ignore_expect_100 on" to conf file.

fortran · 02-18-2013, 03:54 AM

Are you getting error exact like screenshot? or if anything is changed , mention this.

Click image for larger version

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fortran · 02-18-2013, 04:00 AM

@ZackFair
Gr8, When you was typing your comment, I was busy in my comment that's why I couldn't see your comment. See my comment is 2 min after your comment.
Now write your procedure what you did to resolve the issue and make this thread solved.
So future users will take benefit of your experience.

ZackFair · 02-18-2013, 04:09 AM

This thread is already solved.
Solution is in the post #3.