assignment to pool and uie persist to member

 when HTTP_REQUEST {
    
 The first part of the URI should be a pool.
 for this example, my pools are named "p_1" and "p_2",
 so the URI of '/p_1/foo/bar.html will point to pool p_1,
 then the cookie persistence will take care of subsequent requests.

 NO default pool is set on the Virtual Server, and
 use a cookie insert persistence profile on the VS.

 Using variables for clarity.
set uri [HTTP::uri]

if { $uri ne "" } {
 Set the pool name, strip off slashes.
set p [string map {"/" ""}  [URI::path $uri 1 1]]
}

if {$p starts_with "p_"} {

log local0. "orig URI: $uri"
set newuri [string map "/$p/ /" $uri]
log local0. "New uri is: $newuri"

 Set the new URI.
HTTP::uri $newuri
persist cookie
pool $p
log local0. "Selecting pool: $p, uri is [HTTP::uri]"
} else {
log local0. "Nothing to do, no pool in URI."
}

}