PP 1.0 has been tested on SunOS 4.1.3 and Solaris. If you use it, please tell us about your experience. Experience PP has helped us teach graduate students, undergraduates and interested passers-by about Internet protocols for several years. Students are impressed by the concrete realization of Internet application messages that they observe when we use PP . It helps them separate out the functionality of application servers and clients.
Students are surprised to see that the messages sent by many Internet applications are so simple.
It impresses them when I send an Internet email by simply issuing the sequence of 4 SMTP messages illustrated above. Often I build on their PP experience and ask them to consider extending a protocol with new messages to provide additional functionality. PP extensions PP could be extended in several ways. Their data would need to be converted to strings or numbers before displayed in the log. The message trace could include timing and performance data, or another window could display a space time diagram.