HTTP Request rewrite before sending to specified node

If this is the method you want to try, below is a rule which should do it.

I assume that requests the client sends will start with /node and then have the actual path the application expects following that node prefix. If the real path was /path/to/index.html, and you wanted to specify node1 received the request, you would make a request to /node1/path/to/index.html. The method below wouldn't work if you requested /node1path/to/index.html because the /node1 portion would be removed and the resulting URI wouldn't start with a leading forward slash.

when HTTP_REQUEST {
   switch -glob [HTTP::path] {
      /node1/* {
          Remove the /node1 prefix from the path
         HTTP::path [string map {/node1 ""} [HTTP::path]]
          Set the node
         node 192.168.1.1 8080
      }
      /node2/* {
          Remove the /node1/ prefix from the path
         HTTP::path [string map {/node2 ""} [HTTP::path]]
          Set the node
         node 192.168.1.2 8080
      }
      default {
          Take some default action?
         pool http_pool
      }
   }
}

The iRule wiki and TCL man pages have details on the various commands:

switch (Click here)

HTTP::path (Click here)

node (Click here)

string map (Click here)

Aaron