redirect based on uri

Here is my first attempt.

 

It first attempt to see if the request if from a bot and sends to a specialised server if it is

 

It then looks for the querystring and sends accordingly.

 

Finaly, if the querystring is not found, it sends to a default pool.

 

Can I have a peer review?

 

 

when HTTP_REQUEST {

 

if { [matchclass [string tolower [HTTP::header User-Agent]] contains $::bots] } {

 

is a bot .. send to the bot server

 

pool MIS-BOT50-DM

 

} else {

 

regular traffic

 

set v1 [URI::query [HTTP::uri] "lbsc"]

 

switch { v1 } {

 

"c" {

 

pool MIS-WEB50C

 

}

 

"d" {

 

pool MIS-WEB50D

 

}

 

"e" {

 

pool MIS-WEB50E

 

}

 

"f" {

 

pool MIS-WEB50F

 

}

 

default {

 

pool MIS-WEB50-DM

 

}

 

}

 

}

 

}

That looks like a good start. I think your switch statement is slightly off though. Are you ever seeing traffic go to any but the default pool?

I think {v1} would be evalutated as a literal string of v1, not the variable value for $v1. Regardless, you can avoid using the variable altogether.

switch [URI::query [HTTP::uri] "lbsc"] {
   "" {
      pool MIS-WEB50-DM
   }
   "c" {
      pool MIS-WEB50C
   }
   "d" {
      pool MIS-WEB50D
   }
   "e" {
      pool MIS-WEB50E
   }
   "f" {
      pool MIS-WEB50F
   }
   default {
      pool MIS-WEB50-DM
   }
}

If most of your requests won't have the lbsc parameter set, you could have the first test in the switch be "".

Aaron

Thanks :-)

This works, but only for the first request. Subsequent requests are directed to other servers in the pool, I asume by persistence. Is there any way to switch it off and persist to the requested node??

 

 

when HTTP_REQUEST {

 

if { ([matchclass [string tolower [HTTP::header User-Agent]] contains $::bots])

 

or

 

([ matchclass [ IP::client_addr ] equals $::bot_ips ]) } {

 

is a bot .. send to the bot server

 

pool MIS-BOT20-01

 

} else {

 

regular traffic

 

switch [URI::query [HTTP::uri] "lbsc"] {

 

"" {

 

pool MIS-WEB20-1

 

}

 

"c" {

 

node 10.60.1.234

 

}

 

"d" {

 

node 10.60.1.104

 

}

 

"e" {

 

node 10.60.2.124

 

}

 

"f" {

 

node 10.60.2.6

 

}

 

"g" {

 

node 10.60.2.55

 

}

 

"botc" {

 

node 10.60.1.134

 

}

 

"botd" {

 

node 10.60.2.34

 

}

 

default {

 

pool MIS-WEB20-1

 

}

 

}

 

}

 

}

I tried to add cookie persistence to the irule to no effect:

 

 

when HTTP_REQUEST {

 

if { ([matchclass [string tolower [HTTP::header User-Agent]] contains $::bots])

 

or

 

([ matchclass [ IP::client_addr ] equals $::bot_ips ]) } {

 

is a bot .. send to the bot server

 

pool MIS-BOT20-01

 

} else {

 

regular traffic

 

switch [URI::query [HTTP::uri] "lbsc"] {

 

"" {

 

pool MIS-WEB20-1

 

}

 

"c" {

 

persist cookie

 

node 10.60.1.234

 

}

 

"d" {

 

persist cookie

 

node 10.60.2.104

 

}

 

"e" {

 

persist cookie

 

node 10.60.2.124

 

}

 

"f" {

 

persist cookie

 

node 10.60.2.6

 

}

 

"g" {

 

persist cookie

 

node 10.60.2.55

 

}

 

"botc" {

 

persist cookie

 

node 10.60.1.134

 

}

 

"botd" {

 

persist cookie

 

node 10.60.2.34

 

}

 

default {

 

pool MIS-WEB20-1

 

}

 

}

 

}

 

}

Apply a OneConnect profile to the virtual, and you should see that each request on the same connection is evaluated & routed to the desired pool. (Without OneConnect, the first pool chosen is used for the life of the connection.)

 

 

HTH

 

/deb