Java EE introduced built in support for handling multipart MIME file uploads in Servlet 3.0 (Java EE 6). If you enable this functionality on a servlet, the container will make additional methods available on an HttpServletRequest to get all parts available on a request and also to get one of those parts passing in its name. We will see a demo of the multipart file upload in Servlet 3.0 using multipart config.

Looks like TCPMon is not more supported by apache as I can see this message on its home page @ http://ws.apache.org/tcpmon: This project is no longer supported. Any information may be inaccurate or incomplete. Old archived releases are available from here. However we will see tcpmon here quickly as it is very easy to configure and use for simple http request/response scenarios.

Wireshark is a free and open-source packet analyzer that captures data packets flowing over the network (wire) and presents them in an understandable form through its GUI. It is used for network troubleshooting, analysis, software and communications protocol development, and education. It runs on Linux, OS X, BSD, Solaris, some other Unix-like operating systems, and Microsoft Windows. There is also a terminal-based (non-GUI) version called TShark.

Java EE introduced built in support for handling multipart MIME file uploads in Servlet 3.0 (Java EE 6). Web servers based on PHP and ASP.NET have provided this functionality for some time now, saving having to use other third party libraries for the multipart “heavy lifting”.

We have already seen basic session management in Java EE using cookies and URL rewriting. Now we will quickly see some of the remaining important topics such as SSL sessions, session life cycle, passivation and sessions in distributed applications.

Session Life Cycle

There are three stages in the life of a session