Irule that select pool memeber based on client language in http header

when HTTP_REQUEST { if { [HTTP::header "Accept-Language"] starts_with "en" } { pool test member 10.2.0.11 80 } }

try below

when HTTP_REQUEST {

  if { [HTTP::header "Accepted-Language"] contains "en-us" }  {
     pool Pool_english
          }
           }

Suggest you try the following...

when HTTP_REQUEST {
  switch -glob [HTTP::header "Accept-Language"] {
    en* { pool pool_app_english }
    jp* { pool pool_app_japanese }
    de* { pool pool_app_german }
    default { pool pool_app_english }
  }
}

The accept language header defined in RFC7231 takes the form of 2 letter abbreviation of language followed by additional information. The above iRule allows you to pick pools for specific languages and even set a default. You can choose not have a default and it will use the pool attached to the virtual server instead.

Local traffic policy would do as well.

Hi,

Accept-language is a list of all accept languages... if the first language is not in the list, check for the second one until you find one manage language...

when HTTP_REQUEST {
    pool pool_app_english
    foreeach language [split [HTTP::header "Accept-Language"] ","]
        switch -glob $language {
          "en*" { pool pool_app_english; break}
          "jp*" { pool pool_app_japanese ; break}
          "de*" { pool pool_app_german ; break}
          default { }
        }
    }
}