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yangshuaijun_99's avatar
yangshuaijun_99
Icon for Nimbostratus rankNimbostratus
Sep 21, 2009

According to post fields delivery the request to special pool

Hi:

 

I wish delivery the http request to special pool according to the post fields.

 

First, I collect the post data.

 

And then, I split the post data and capture the second field's value.

 

Finally, I search the value from the prepared the list and delivery the request.

 

But my iruels fails in BIGIP 6800.

 

Who can do me a favor to check it over?

 

application delivery
dev
devops
iRules
  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Sep 21, 2009
    Hello,

    That's a good start, but I'd suggest you limit the collection to 2Mb--not ~4Gb due to an issue described in SOL6578:

    SOL6578: TMM will crash if an iRule collects more than 4MB of data

    https://support.f5.com/kb/en-us/solutions/public/6000/500/sol6578.html

    Also, you can use URI::query (Click here) to parse the payload and get the value of a parameter, if it's in the format of parameter1=value1&paramter2=value2. And then you can use switch to check the value: 

     
 when RULE_INIT { 
  
  Maximum number of bytes to collect in request 
 set ::max_collect_length 1024000 
 } 
 when HTTP_REQUEST { 
  
  
  Get the content length so we can buffer the data to process in the HTTP_RESPONSE_DATA event 
 if {[HTTP::header exists "Content-Length"] and [HTTP::header "Content-Length"] < $::max_collect_length}{ 
 set content_length [HTTP::header "Content-Length"] 
 } else { 
 set content_length $::max_collect_length 
 } 
 if {$content_length > 0}{ 
  
 if {$static::enc_dbg}{log local0. "$log_prefix: Collecting $content_length bytes"} 
 HTTP::collect $content_length 
 } 
 } 
 when HTTP_RESPONSE_DATA { 
  
  Get value for province parameter 
 set province [URI::query "?[HTTP::payload]" province] 
  
 switch $province { 
  
 "abc" { 
 pool my_pool_1 
 persist uie [HTTP::cookie "JSESSIONID"] 
 } 
 "def" { 
 pool my_pool_2 
 persist uie [HTTP::cookie "JSESSIONID"] 
 } 
 default { 
 pool pool_public_web_ALL 
 persist source_addr 30 
 } 
 } 
 }

    You'll need to update the switch cases based on the different values you want to handle for the province parameter. And you might consider using source address persistence for a longer timeout than 30 seconds.

    If you try that and it does not work, can you add debug logging and list what you've tested and what's not working?

    Thanks,

    Aaron