Principles of operation for PI Interface for TCP Response

The TCPResponse interface measures the response time of various services that are part of a TCP/IP network:

• HTTP (Web) servers);

• SMTP, POP3, and IMAP (Mail) servers;

• FTP servers;

• DNS (Name resolution) servers;

• Microsoft Windows NT/2000/XP Terminal Servers;

• OSIsoft Data Archive.

In addition, TCPResponse also stores the actual result (and not the response time) of a DNS operation. Finally, the interface determines the time it takes to load a particular page on a Web server that requires username/password authentication.