RMI Tunneling

Question

I am trying to understand how RMI Tunneling works, but I am very confused. One of my big issues is about java-rmi.cgi, it doesn't exist on new Windows JDK.
I follow some receipts to use Apache Tomcat for Tunneling RMI with a ServletHandler, but I was unsuccessful. Probably, these receipts are deprecated... I didn't found many topics about this subject, and what I had found was for older versions of JDK. Is it worthless to use RMI Tunneling?
Now, I am reading " [C.10 How can I make outgoing Java RMI calls through a local firewall?|http://java.sun.com/javase/6/docs/technotes/guides/rmi/faq.html#firewallOut] " of RMI FAQ.
I appreciate any help. Thanks.

Answer 1

Hi hesher,
There are two ways.
1)using java-rmin.cgi.
Just put java-rmi.cgi in /cgi-bin/.
2)using ServletHandler.
2.1)Install Tomcat6.
2.2)Read http://java.sun.com/j2se/1.4.2/docs/guide/rmi/faq.html#servlet
and download ServletHandler.java from http://java.sun.com/j2se/1.4.2/docs/guide/rmi/faq.html#servlet
2.3)Compile it by "javac -cp servlet.jar ServletHandlet.java]" where serlvet.jar (or servlet-api.jar) is located in /usr/share/tomcat6/lib and so on.
2.4)Deploy ServletHandler.class ..... in wbapps/rmi/WEB-INF/classes of Tomcat6.
2.5)Put a web.xml following in WEB-INF
&#12288;&#12288; <servlet>
&#12288;&#12288;&#12288;&#12288;<servlet-name>ServletHandler</servlet-name>
&#12288;&#12288;&#12288;&#12288;<servlet-class>ServletHandler</servlet-class>
&#12288;&#12288; </servlet>
&#12288;&#12288; <servlet-mapping>
&#12288;&#12288;&#12288;&#12288;<servlet-name>ServletHandler</servlet-name>
&#12288;&#12288;&#12288;&#12288;<url-pattern>/ServletHandler</url-pattern>
&#12288;&#12288;</servlet-mapping>
2.6)modify httpd.conf of apache.
&#12288; LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_ajp_module modules/mod_proxy_ajp.so
&#12288; <Location /cgi-bin/java-rmi.cgi>
&#12288; ProxyPass ajp://localhost:8009/rmi/ServletHandler
&#12288; </Location>
2.7)Put "RMISocketFactory.setSocketFactory( new sun.rmi.transport.proxy.RMIHttpToCGISocketFactory());" in your java client main program.
That's all.
Good luck!
Ref.
1)http://sys.elec.kitami-it.ac.jp/users/ueda/blog/ in japanese&#12288;
2)http://java.sun.com/j2se/1.4.2/docs/guide/rmi/faq.html#servlet
3)http://forums.sun.com/thread.jspa?forumID=58&threadID=706008
4)http://forums.sun.com/index.jspa