JServer overview

The J-Server is an extensible web server that allows users to upload untrusted Java code onto the server to service HTTP requests. The J-Server is currently the primary application for the J-Kernel and is used on a daily basis. It is implemented as a JOS subsystem (cornell.slk.jserver.httpserver) and runs as a stand-alone server, as a plug-in for Microsoft's web server (IIS 2.0+), or as a remote J-Server. A remote J-Server is attached to a stand-alone or IIS plug-in J-Server who forwards HTTP requests over the network using JOS RPC or Microsoft's DCOM (available only for the IIS plug-in).

The J-Server also contains:

• A servlet API package (cornell.slk.jserver.servlet) that is very similar to and supports most of the functionality offered by Sun's Java Servlet API (as documented in Sun's Servlet Development Kit).
• A package with two special servlets: a servlet loader (cornell.slk.jserver.servlets.ServletLoader) used for loading and unloading servlets, and a subsystem loader (cornell.slk.jserver.servlets.SubsystemLoader) used for loading and unloading JOS subsystems. These two servlets are installed automatically by the JServer during initialization.
• A package a with a few demo servlets (cornell.slk.jserver.demoservlets).

Tutorial on the JServer

Remote Debugging with the JServer

Tutorial on JOS