SOAP rewrite

What you are doing looks correct aside from the offset value in the HTTP::payload replace command

 

 

HTTP::payload replace offset length new_string

 

 

You are passing in a value of 16 for length when I believe it should be the length of "To>https://" which is 11.

 

 

You cannot reliably do this in the HTTP_REQUEST method because at this point the content is not guaranteed to be received yet. You must use the HTTP::collect method in HTTP_REQUEST to ensure that the amount of content you requested is received. After a HTTP::collect method is called, the HTTP_RECEIVE_DATA event is raised and you can then access the HTTP::payload at that time.

 

 

You can do this in one big chunk (up to [HTTP::header Content-Length]) or at little pieces at a time with successive calls to HTTP::collect.

 

 

Another issue with your original code could be that the header isn't in the first 1024 bytes of the request. It's better to request the entire Content-Length (unless it's huge).

 

 

In your case, I would do something like the following:

 

 

 when HTTP_REQUEST { 
   set clen [HTTP::header Content-Length] 
   if { not [info exists clen] or "" eq $clen } { 
     set clen 4096 
   } 
   HTTP::collect $clen 
 } 
  
 when HTTP_REQUEST_DATA { 
   set old_content "To>https://" 
   set new_content "To>http://" 
   set len_old_content [string length $old_content] 
  
   set offset [string first $old_content [HTTP::payload]] 
   if { $offset >= 0 } { 
     log local0. "Found '$old_content' in payload at offset $offset" 
     log local0. "Content Before: [HTTP::payload]" 
     HTTP::payload replace $offset $len_old_content $new_content 
     log local0. "Content After : [HTTP::payload]" 
   } else { 
     log local0. "Didn't find '$old_content' in payload!" 
     log local0. "Payload: [HTTP::payload]" 
   } 
 }

 

 

The log statements will put the payload before and after the replace in the /var/log/ltm file. This should help with troubleshooting if things don't work.

 

 

-Joe