Forum Discussion
dyobbs_25515
Nimbostratus
NimbostratusiRule 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.
user ------> F5 [rewrite URL] [forward request] ---> pool (pool_cache)
Issue:
However, when using httpwatch, i found out that after rewriting the URL, it doesn't forward it to my cache pools.
Browser now goes directly to the URL site, bypassing my cache/proxy.
www.google.com.removeme.com ----> www.google.com
rule myrules {
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]"
}
Will this iRule direct it to my pool after rewriting, then cache will reply back to user?
rule myrules {
when HTTP_REQUEST {
set host [string tolower [HTTP::host]]
set newhost [string map {".removeme.com" ""} $host]
if {$host ne $newhost} {
pool pool_cache}
any inputs is appreciated.
tnx,
6 Replies
- nitass
Employee
are you using explicit proxy (manually set it in browser) or transparent one? 
dyobbs_25515hi, transparent one..- dyobbs_25515nitass hi,
we got this log from the cache server, based on the irule above. No URL has passed to cache server.
"GET / HTTP/0.0" 400 3549 "-" "-" NONE:NONE.
here's a sample of what a good log on the cache server:
10.128.142.61 "-" - - [17/Feb/2012:11:56:30 +0800] "GET http://www.google.com/ HTTP/1.0" 302 777 "-" "Wget/1.11.4 Red Hat m
" TCP_MISS:DIRECT
thx - nitassthis 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 - dyobbs_25515Tnx, nitass. Let me check on it on the lab as well.
I was wondering what's the reason behind?
How come when defined a certain VS address initially, it didn't work? - nitassHow come when defined a certain VS address initially, it didn't work?didn't you use wildcard virtual address? if so, how can traffic hit the virtual after getting redirection?
