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waterfall_10467's avatar
waterfall_10467
Icon for Altostratus rankAltostratus
Jul 19, 2012

Help for when_http_response

 

 

 

when HTTP_REQUEST timing on priority 100 {

 

Check the requested path with wildcard matching

 

switch -glob [HTTP::path] {

 

"/appmania*" {

 

log local0. "HOST [HTTP::host] PATH [HTTP::path]"

 

pool HTTP_appmania

 

}

 

"/floo*" {

 

log local0. "HOST [HTTP::host] PATH [HTTP::path]"

 

pool HTTP_floo

 

}

 

"/HARDWARE*" {

 

switch [string tolower [IP::client_addr]] {

 

"85.88.99.201" {

 

log local0. "1 [HTTP::uri] [IP::client_addr] "

 

pool HTTP_active

 

log local0. " [HTTP::uri] [IP::client_addr] "

 

}

 

"85.87.66.78" {

 

log local0. "1 [HTTP::uri] [IP::client_addr] "

 

pool HTTP_active

 

log local0. " [HTTP::uri] [IP::client_addr] "

 

}

 

"85.74.86.89" {

 

log local0. "1 [HTTP::uri] [IP::client_addr] "

 

pool HTTP_active

 

log local0. " [HTTP::uri] [IP::client_addr] "

 

}

 

"92.78.96.129" {

 

log local0. "1 [HTTP::uri] [IP::client_addr] "

 

pool HTTP_active

 

log local0. " [HTTP::uri] [IP::client_addr] "

 

}

 

"92.78.96.129" {

 

log local0. "1 [HTTP::uri] [IP::client_addr] "

 

pool HTTP_active

 

log local0. " [HTTP::uri] [IP::client_addr] "

 

}

 

default

 

{

 

pool HTTP_active

 

}

 

}

 

log local0. "HOST [HTTP::host] PATH [HTTP::path]"

 

log local0. " [HTTP::uri] [IP::client_addr] "

 

pool HTTP_active

 

}

 

 

 

I need your help about the above irule. we want to produce log the "/HARDWARE*" { responses on the f5. Could you help us ?

 

Thank you in advance.

 

regards,

 

 

application delivery
dev
devops
iRules

7 Replies

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  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Jul 19, 2012
    we want to produce log the "/HARDWARE*" { responses on the f5. what information would you like to log in response?
  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Jul 19, 2012
    we want to produce log the "/HARDWARE*" { responses on the f5. what information would you like to log in response?
  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    Jul 19, 2012
    A few comments:

     

     

    You can remove the 'string tolower' command on the client IP address as IPv4 addresses don't have alpha characters.

     

     

    You could add the IP addresses to a data group and then use the class command to look up the client IP against the data group. This should be simpler and more efficient than using the a switch statement to do a string comparison of the IP addresses.

     

     

    Aaron
  • waterfall_10467's avatar
    waterfall_10467
    Icon for Altostratus rankAltostratus
    Jul 19, 2012
    Hello All,

     

     

    Thank you for your quick reply.Actually. this irule is longer but I have cut a part of it relevant to us.And I have to run it right away .That's why I can consider the data group for later. Nitass , after client's request I need to collect all responses of servers. Because we want to observe if client connect to server successfully.However, since the irule will consist heavy load on the f5. I want to this only for a project to troubleshoot. when the project finished. I will send all the logs to syslog sever.and this topic really very urgent for us.

     

     

    thank you for your helps
  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Jul 20, 2012
    is this codeshare applicable?

    HTTP Payload Collection by Deb

    https://devcentral.f5.com/wiki/iRules.HTTPPayloadCollection.ashx

    e.g. 

    [root@ve10:Active] config  b virtual bar list
virtual bar {
   snat automap
   destination 172.28.19.79:80
   ip protocol 6
   rules myrule
   profiles {
      http {}
      tcp {}
   }
}
[root@ve10:Active] config  b rule myrule list
rule myrule {
   when HTTP_REQUEST {
   set flag 0
   set path [HTTP::path]
   switch -glob $path {
      "/HARDWARE*" {
         set flag 1
         set collected 0
         if { [HTTP::version] eq "1.1" } {
            if { [HTTP::header is_keepalive] } {
               HTTP::header replace "Connection" "Keep-Alive"
            }
            HTTP::version "1.0"
         }
         pool HTTP_active
      }
      default {
          do someting
      }
   }
}

when HTTP_RESPONSE {
   if {$flag == 0} { return }

   if { [HTTP::header exists "Content-Length"] } {
      set content_length [HTTP::header "Content-Length"]
   } else {
      set content_length 0
   }
   if { $content_length > 0 && $content_length < 1048577 } {
      set collect_length $content_length
   } else {
      set collect_length 1048576
   }
   if { $collect_length > 0 } {
      HTTP::collect $collect_length
   }
}

when HTTP_RESPONSE_DATA {
   log local0. "client [IP::client_addr]:[TCP::client_port] | server [IP::remote_addr]:[TCP::remote_port] | path $path | payload [HTTP::payload]"
   HTTP::release

   set collected [expr {$collected + $collect_length}]
   set remaining [expr {$content_length - $collected}]
   if { $remaining > 0 } {
      if { $remaining < $collect_length } {
         set collect_length $remaining
      }
      HTTP::collect $collect_length
   }
}
}

[root@ve10:Active] config  tail -f /var/log/ltm
Jul 20 21:02:20 local/tmm info tmm[5111]: Rule myrule : client 192.168.206.55:51246 | server 200.200.200.101:80 | path /HARDWARE/test.html | payload hello world
  • waterfall_10467's avatar
    waterfall_10467
    Icon for Altostratus rankAltostratus
    Jul 20, 2012
    Hello Nitass,

     

    Actually as I mentioned before we want to see all responses relevant to the http reguests .If I edit the irule like yours, I guess I won't need the ip address ? right. as you know I need logs of the ip address. Because using virtual server is running for other traffic.I guess I have explained wrong this. sorry. normally if client ip addresses like above and if those have include the HARDWARE*" at this point we want to see all requests and all responses of the requests.

     

     

    Thank you in advance.

     

     

    regards,

     

  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Jul 20, 2012
    actually, i just want to show http response payload is collected. "hello world" string is the response. it is a content of test.html.

     

     

    i did not use your irule as a base since i thought you are interested only how to collect response part.

     

     

    anyway, i think the HTTP Payload Collection codeshare by Deb is what you are looking for.