Is it possible to use F5 as proxy/reverse proxy server?

Basically a load balancer is a reverse proxy. Please see the following thread on URI parsing.

http://devcentral.f5.com/default.aspx?tabid=28&view=topic&forumid=5&postid=1635

With your URL, you will want to use

ends_with "http://10.10.0.15:83/ 

as your condition.

-Brian

Also see this thread: http://devcentral.f5.com/default.aspx?tabid=28&forumid=5&postid=1514&view=topic on constructing a uri.

 

 

Let me know if you need help.

 

 

-Brian

I need some help. I'm new in i-Rule configuration and tcl script.

 

 

I have 2 external data groups : host_map and crp_map

 

 

in host_map have this content:-

 

"crp.domainname.com crp_map"

 

 

and in crp_map have this content :-

 

"/ /index.jsp CRP_Pool"

 

 

 

First I want to map HTTP::host to crp.domainname.com if it equals

 

I want to use i-Rule to check in another datagroup name "crp_map" that writen after the host like this

 

 

 

set loop 0

 

set max [llength $::host_map]

 

while {$loop < $max} {

 

set tmpstr [lindex $::host_map $loop]

 

scan "%s%s" $tmpstr host data

 

if {[HTTP::host] == $host} {

 

<<>>

 

 

I try to set like :

 

 

$::$datagroup

 

$"::$datagroup"

 

$::{$datagroup}

 

 

and many ways. but it didn't work.

 

 

anyone can help me? or know another way to refer to datagroup than $::

 

 

thank you.

I am not entirely sure what you are trying to do. But you seem to be using TCL lists and I think you are trying to perform double variable expansion. Perhaps this example will help:

 
 % set foo { 1 2 3 4 } 
  1 2 3 4 
 % puts [lindex $foo 3] 
 4 
 % set bar foo 
 foo 
 % puts [lindex [subst $$bar] 3] 
 4 
 

You also might consider using the foreach command to iterate over all the elements of the list instead of the while command.

thank you for quick answer.

 

I think your answer is work. but I have another problem when I write like you comment. May you help me again?

 

 

set loopidx1 0

 

set maxloop1 [llength $::host_map]

 

log $maxloop1

 

while { $loopidx1 < $maxloop1 } {

 

set tmpstr1 [lindex $::host_map $loopidx1]

 

scan $tmpstr1 "%s%s" hosturl datagroup

 

if { ($request_host == $hosturl) } {

 

set loopidx2 0

 

set datagroup ::$datagroup

 

log [subst $$datagroup]

 

log [lindex [subst $$datagroup] end]

 

 

and when I try to connect to server it errors like this;

 

 

Feb 25 16:02:10 tmm tmm[11654]: 01220002:6: Rule CRP_Forward_rule : 4

 

Feb 25 16:02:10 tmm tmm[11654]: 01220002:6: Rule CRP_Forward_rule : {/ /reg/index.jsp10 Exist_revprox} {/wap/ /wap/ Mobile_life}

 

Feb 25 16:02:10 tmm tmm[11654]: 01220001:3: TCL error: Rule CRP_Forward_rule - list element in braces followed by "" instead of space while executing "lindex [subst $$datagroup] end"

 

 

the error happend same as previous question I post here.

 

do you have any comment? what should I do?

 

 

thank you again.

You are very close. Try this:

 
 set group ::datagroup 
 log [subst $$group] 
 log [lindex [subst $$group] end] 
 

You had an extra $ in the variable of the datagroup.

I would also suggest you simply modify your host_map to contain the :: for the group name so you don't have to add the extra variable set command.