[jboss-jira] [JBoss JIRA] Created: (JBMESSAGING-1131) Add configuration for Remoting servlet transport

[Ron Sigal (JIRA)]

Add configuration for Remoting servlet transport
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                 Key: JBMESSAGING-1131
                 URL: http://jira.jboss.com/jira/browse/JBMESSAGING-1131
             Project: JBoss Messaging
          Issue Type: Task
            Reporter: Ron Sigal
         Assigned To: Tim Fox
             Fix For: 2.0.0 Alpha


In addition to the "http" transport, Remoting also has the http-based "servlet" transport.  The servlet transport is the same as the http transport on the client side (they both use org.jboss.remoting.transport.http.HTTPClientInvokr), but they are different on the server side.  In particular, CoyoteInvoker, the http transport server invoker, uses the network layer of tomcat/jbossweb, i.e., a ServerSocket with worker threads.  But in the servlet transport, a org.jboss.remoting.transport.servlet.web.ServerInvokerServlet fields invocations and passes them to org.jboss.remoting.transport.servlet.ServletServerInvoker.  The advantage, which came up in a forum thread recently (http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4098850#4098850  and http://www.jboss.com/index.html?module=bb&op=viewtopic&t=122218), is that only one ServerSocket is used.  In principle, it's the appropriate transport to use when the server is running inside JBossAS.  In fact, the wiki page "Accessing_EJB3s_over_HTTP_HTTPS" shows how to change the EJB3 transport from socket to servlet.  However, there have been a couple of problems.  For one, ServletServerInvoker has been a little behind CoyoteInvoker in its development, though I've been rectifying that (JBREM-675 "Problems with Servlet invoker").  For another, the servlet transport needs tomcat/jbossweb for unit testing, and we've never automated that, so it's not as well tested as CoyoteInvoker (JBREM-139 "need automated test for servlet server invoker").  However, I wanted to verify that JBossMessaging can run with the servlet transport, so I created a servlet example, parallel to the http example, along with the supporting configuration files, and it works. 

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