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when CLIENT_ACCEPTED {
    Check if the first packet contains "test"
   if { [TCP::payload] contains "test"} {
      pool test_pool
   } elseif { [TCP::payload length] < 50 } {
       Collect at least 50 bytes.
       This triggers CLIENT_DATA when at least 50 bytes have been collected.
      TCP::collect 50
   } else {
      log "Unrecognised test discarding [IP::client_addr]"
      discard
   }
} 
when CLIENT_DATA {
   if { [TCP::payload] contains "test"} {
      pool test_pool

      Release collected data
  TCP::release
   } else {
      log "Unrecognised test discarding [IP::client_addr]"
      discard
   }
}