I will try here.. Modification http header

Question

I need an IRule for an HTTP request. &nbsp;
&nbsp;I need to modify the HOST: xxx.xxx.xxx.xxx field in the header.&nbsp;
&nbsp;Example:&nbsp;
&nbsp;   POST /webservice/services/ProvisioningService HTTP/1.1&nbsp;
   Accept-Encoding: gzip,deflate&nbsp;
   Content-Type: text/xml;charset=UTF-8&nbsp;
   SOAPAction: ""&nbsp;
   User-Agent: Jakarta Commons-HttpClient/3.1&nbsp;
   Host: X.X.X.X        &lt;-----------  I want to replace this ip with a member IP in the pool (which is the active member.&nbsp;
   Content-Length: 780&nbsp;&nbsp;&nbsp;
&nbsp;I would like to change the HOST:  field   from the IP (which is the vitrual server IP) to the IP of active member in the pool (there are 2 members).  This rule would be on a HTTP_REQUEST rule. I can't access the wiki as it crashes my browser&nbsp;
&nbsp;I have tried posting in other topics but since I am a newb adding the situation apparently causing confusion of what I want since the response from the endpoint is a redirect and I don't want a redirect. &nbsp;&nbsp;
&nbsp;Thanks&nbsp;
&nbsp;John&nbsp;&nbsp;

hoolio · Answer

Hi John, 
  
 If you want to rewrite the HTTP host header value to the IP address of the selected server, you can use an iRule like this:

when HTTP_REQUEST_SEND {

Force evaluation in the clientside context
   clientside {

Replace the Host header value with the selected server IP address
      HTTP::header replace Host [LB::server addr]
   }
}

Aaron

hoolio · Answer

Glad to see that worked for you. 
&nbsp;  
&nbsp; Aaron

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