Original Google Code repository: https://code.google.com/archive/p/rpc-servlet/
RpcServlet was created with Java SE 6 so it is probably best to run it with Tomcat 6.
Download Tomcat 6 and extract.
Clone RpcServlet from GitHub using the following:
$ git clone git@github.com:gazbond/rpc-servlet.git
Change directory to [rpc-servlet-directory] and run the ant build file using the following:
$ ant
You should then see:
RpcServlet
|-web
|-WEB-INF
|-classes
|-rpc-services.properties
|-gizmo
|-org
Create the file rpc-servlet.xml in [tomcat-directory]/conf/Catalina/localhost/ with the following contents:
<?xml version="1.0" encoding="UTF-8"?>
<Context docBase="[rpc-servlet-directory]/web" path="/rpc-servlet"/>
Start Tomcat and go to http://localhost:8080/rpc-servlet/ in your browser.