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dyobbs_25515's avatar
dyobbs_25515
Icon for Nimbostratus rankNimbostratus
Feb 15, 2012

iRule rewrite then forward request to pool

hi,     Requirement:   iRule that basically truncates and rewrites the URL, then forward request to pool. Then pool will accept request, then will process it and send back ack to user.   ...
application delivery
dev
devops
iRules
nitass's avatar
nitass
Icon for Employee rankEmployee
Feb 17, 2012
this is my testing.

virtual server is listening on wildcard address port 80. pool is proxy server. client uses bigip as default gateway. 

[root@ve1023:Active] config  b virtual bar list
virtual bar {
   translate address enable
   snat automap
   pool foo
   destination any:80
   mask 0.0.0.0
   ip protocol 6
   rules myrule
   profiles {
      http {}
      tcp {}
   }
}
[root@ve1023:Active] config  b pool foo list
pool foo {
   members 172.28.19.251:3128 {}
}
[root@ve1023:Active] config  b rule myrule list
rule myrule {
   when HTTP_REQUEST {
   set host [string tolower [HTTP::host]]
   set newhost [string map {".removeme.com" ""} $host]
   if {$host ne $newhost} {
      HTTP::redirect "http://$newhost[HTTP::uri]"
   }
}
}

on client machine

[root@centos101 ~] curl -IL http://www.google.com.removeme.com
HTTP/1.0 302 Found
Location: http://www.google.com/
Server: BigIP
Connection: Keep-Alive
Content-Length: 0

HTTP/1.0 302 Moved Temporarily
Location: http://www.google.com.sg/
Cache-Control: private
Content-Type: text/html; charset=UTF-8
Set-Cookie: PREF=ID=1abe3f154bae6bc6:FF=0:TM=1329460956:LM=1329460956:S=erYtf92BCLc5EN5R; expires=Sun, 16-Feb-2014 06:42:36 GMT; path=/; domain=.google.com
Date: Fri, 17 Feb 2012 06:42:36 GMT
Server: gws
Content-Length: 222
X-XSS-Protection: 1; mode=block
X-Frame-Options: SAMEORIGIN
X-Cache: MISS from centos251.abc.com
X-Cache-Lookup: MISS from centos251.abc.com:3128
Via: 1.0 centos251.abc.com:3128 (squid/2.6.STABLE21)
Connection: close

HTTP/1.0 200 OK
Date: Fri, 17 Feb 2012 06:42:36 GMT
Expires: -1
Cache-Control: private, max-age=0
Content-Type: text/html; charset=ISO-8859-1
Set-Cookie: PREF=ID=9b5db78097a1bfa3:FF=0:TM=1329460956:LM=1329460956:S=AdWH46_x8ioXn9G7; expires=Sun, 16-Feb-2014 06:42:36 GMT; path=/; domain=.google.com.sg
Set-Cookie: NID=56=FAZhz19WzF_HoIyhwVwnHKrLFlln2Ge_U3l2DxWvizgizz62CniW2O0lky5omUF98FWuBxU2HjXwchgX_2EPi3-eWddAbFkiL9we3EkUgSykZOfqtMDNhKWvjGf8WuoZ; expires=Sat, 18-Aug-2012 06:42:36 GMT; path=/; domain=.google.com.sg; HttpOnly
P3P: CP="This is not a P3P policy! See http://www.google.com/support/accounts/bin/answer.py?hl=en&answer=151657 for more info."
Server: gws
X-XSS-Protection: 1; mode=block
X-Frame-Options: SAMEORIGIN
X-Cache: MISS from centos251.abc.com
X-Cache-Lookup: MISS from centos251.abc.com:3128
Via: 1.0 centos251.abc.com:3128 (squid/2.6.STABLE21)
Connection: close

log on proxy server (172.28.19.251)

[root@centos251 squid] tail -f access.log
1329461136.053     30 172.28.19.80 TCP_MISS/302 586 HEAD http://www.google.com/ - DIRECT/74.125.235.20 text/html
1329461136.241     60 172.28.19.80 TCP_MISS/200 903 HEAD http://www.google.com.sg/ - DIRECT/74.125.235.24 text/html