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Wes_98712's avatar
Wes_98712
Icon for Nimbostratus rankNimbostratus
Mar 14, 2007

ReWrite HTTP Post

This is a very general question, searching through the forums I have seen some postings regarding rewriting HTTP posts, versus Gets. We have an interesting situation where we are rewriting URL requests and replacing a specific directory structure as follows:


Source URI Stem = /dbauth/plsql
Destination URI Stem = /dbauth/rpt

What should happen, and is, is that for specific packages (this is a legacy pl/sql app) we rewrite the URL and redirect it, now this works great for normal HTML requests, as soon as we start dealing with POSTS it seems things start to fall apart, specific variables that are supposed to be passed are not (still investigating this), but it stands to reason that the redirect is telling the client where to go, but would it also handle the POST as well since that is in the body of the HTML?

This is going to be a crapy forum question until I can get some real world examples. But till then, thought I'd open this up for discussion. Redirect GET versus POST.

-Wes
application delivery
dev
devops
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  • Wes_98712's avatar
    Wes_98712
    Icon for Nimbostratus rankNimbostratus
    Mar 15, 2007
    I don't think we have a multipart message issue, but not sure, here is the current iRule:

    
when HTTP_REQUEST {
   set my_uri [HTTP::uri]
   set my_host [HTTP::host]
   set my_query [HTTP::query]
   if { [ matchclass $my_uri contains $::gms_splitout_reports_perf2_class] } {
      if { $my_uri starts_with "/dbauth/plsql" } {
         set my_new_path [string map {"dbauth/plsql" "dbauth/rpt"}  $my_uri]
         log local0. "SWITCHING: http://$my_host$my_new_path"
         log local0. "URI Query: $my_query"
         HTTP::redirect "http://$my_host$my_new_path"
      } else {
         log local0. "URL: http://$my_host$my_uri"
         pool gms_app_qa_perf_temp_pool
      }
   } else { if { $my_uri starts_with "/dbauth/rpt" } {
         set my_new_path [string map {"dbauth/rpt" "dbauth/plsql"}  $my_uri]
         HTTP::redirect "http://$my_host$my_new_path"
      } else {
        pool gms_app_qa_perf_temp_pool
      }
   }
}

    I'm wondering if I can replace the HTTP::redirect part with something else that simply replaces the strings I am looking for. Not sure if setting the location is better or what, I am trying to search through the forums, and as usual the search engine here is flakey with the new devcentral release.

    Thoughts?

  • Wes_98712's avatar
    Wes_98712
    Icon for Nimbostratus rankNimbostratus
    Mar 15, 2007
    Perhaps something like this?

    
when HTTP_REQUEST {
   set my_uri [HTTP::uri]
   set my_host [HTTP::host]
   set my_query [HTTP::query]
   if { [ matchclass $my_uri contains $::gms_splitout_reports_perf2_class] } {
      if { $my_uri starts_with "/dbauth/plsql" } {
         set my_new_path [string map {"dbauth/plsql" "dbauth/rpt"}  $my_uri]
         log local0. "SWITCHING: http://$my_host$my_new_path"
         log local0. "URI Query: $my_query"
         HTTP::uri $my_new_path
      } else {
         log local0. "URL: http://$my_host$my_uri"
         pool gms_app_qa_perf_temp_pool
      }
   } else { if { $my_uri starts_with "/dbauth/rpt" } {
         set my_new_path [string map {"dbauth/rpt" "dbauth/plsql"}  $my_uri]
         HTTP::uri $my_new_path
      } else {
        pool gms_app_qa_perf_temp_pool
      }
   }
}

    I believe this will reset the URI to what I want it to be before I send it back to the pool for servicing, correct me if I am wrong here.