Virtual Hosts

If the application uses HTTPS, this becomes more complicated as you can only really support one SSL cert on a single VIP. Here is one method for HTTP where you select the pool based on the HTTP host header value:

 
 when HTTP_REQUEST [ 
  
     Make a pool selection based on the host header value (set to lowercase) 
    switch [string tolower [HTTP::host]] { 
       "test1.example.com" { 
           test1 
          log local0. "[IP::client_addr]:[TCP::client_port]: test1.example.com, using test1 pool" 
          pool test1_pool 
       } 
       "test2.example.com" { 
           test2 
          log local0. "[IP::client_addr]:[TCP::client_port]: test2.example.com, using test2 pool" 
          pool test2_pool 
       } 
       "test3.example.com" { 
           test3 
          log local0. "[IP::client_addr]:[TCP::client_port]: test2.example.com, using test3 pool" 
          pool test3_pool 
       } 
       default { 
           didn't match specific case 
          log local0. "[IP::client_addr]:[TCP::client_port]: hit default, using pool1" 
          pool test1_pool 
       } 
    } 
 } 
 

I'm guessing this won't exactly match your scenario, but hopefully it gets you started.

Aaron