classUtils.javassist.sample.evolve
Class DemoServer

java.lang.Object
  classUtils.javassist.web.Webserver
      classUtils.javassist.sample.evolve.DemoServer

public class DemoServer
extends Webserver

A web server for demonstrating class evolution. It must be run with a DemoLoader. If a html file /java.html is requested, this web server calls WebPage.showAndRegister() for constructing the contents of that html file So if a DemoLoader changes the definition of WebPage, then the image of /java.html is also changed. Note that WebPage is not an applet. It is rather similar to a CGI script or a servlet. The web server never sends the class file of WebPage to web browsers. Furthermore, if a html file /update.html is requested, this web server overwrites WebPage.class (class file) and calls update() in VersionManager so that WebPage.class is loaded into the JVM again. The new contents of WebPage.class are copied from either WebPage.class.0 or WebPage.class.1.

Field Summary

Fields inherited from class classUtils.javassist.web.Webserver

debugDir, htmlfileBase

Constructor Summary

DemoServer(int port)

Method Summary

void	doReply(java.io.InputStream in, java.io.OutputStream out, java.lang.String cmd) Proceses a HTTP request from a client.
static void	main(java.lang.String[] args)

Methods inherited from class classUtils.javassist.web.Webserver

end, logging, logging, logging, logging2, run, setClassPool

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DemoServer

public DemoServer(int port)
           throws java.io.IOException

Throws:

java.io.IOException

Method Detail

main

public static void main(java.lang.String[] args)
                 throws java.io.IOException

Throws:

java.io.IOException

doReply

public void doReply(java.io.InputStream in,
                    java.io.OutputStream out,
                    java.lang.String cmd)
             throws java.io.IOException,
                    BadHttpRequest

Description copied from class: Webserver

Proceses a HTTP request from a client.

Overrides:

doReply in class Webserver

out - the output stream to a client

cmd - the command received from a client

Throws:

java.io.IOException

BadHttpRequest