From: Amit Saxena > > The client for which I am working will not allow any external utility / > modules to be installed on their development / production environments. > Moreover they want the solution implemented using Perl only.
If they won't allow any utilities, how will you install this one? They have to learn how be reasonable before you will be able to do much for them. Ping will only tell you that the target computer is up, still connected to the network and reachable from your workstation. It won't tell you if the particular service[*] you want to monitor is still alive. For that you need to create a thread that actively monitors that service. It has to open a connection to the service and keep it open. Then either send an empty message periodically over that connection or set the keep-alive interval to some reasonable period and enable them. How you determine that period depends on how quickly you need to know the server is down. No, the two hour default is not reasonable. For POS systems that need real-time responses we set a sixty second interval. That way we know about network, server or workstation outages within two minutes. Bob McConnell [*] See /etc/services for service to port map. -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
