# File lib/thin/server.rb, line 140
    def start
      raise ArgumentError, 'app required' unless @app
      
      log   ">> Thin web server (v#{VERSION::STRING} codename #{VERSION::CODENAME})"
      debug ">> Debugging ON"
      trace ">> Tracing ON"
      
      log ">> Maximum connections set to #{@backend.maximum_connections}"
      log ">> Listening on #{@backend}, CTRL+C to stop"
      
      @backend.start
    end