TLS server_name extension based routing without clientssl profile

If virtual server doesn't have a clientssl profile, assigning an irule with SSL::disable command is not possible.

to allow to use this command only if clientssl profile is assigned, i set a variable with the command and evaluate the command

if { [PROFILE::exists clientssl] } {
     We have a clientssl profile attached to this VIP but we need
     to find an SNI record in the client handshake. To do so, we'll
     disable SSL processing and collect the initial TCP payload.
    set ssldisable "SSL::disable"
    set sslenable "SSL::enable"
    eval $ssldisable
} 

[PROFILE::exists clientssl]