Hi Guys,
I have a jersey server endpoint exposed via an HttpServer created using
com.sun.jersey.api.container.grizzly2.GrizzlyServerFactory from jersey
1.10 (with dependency
org.glassfish.grizzly.servlet.HttpServletRequestImpl from grizzly 2.1.2).
The jersey server is within a Swing app and is used to sync the Swing
app with changes in teh rest of the system.
Everything works great when I run my Swing app standalone. However, if I
package my Swing app as a webstart application with signed jars and
access it via java webstart / jnlp I get teh following exception during
request header processing:
java.lang.ClassCastException:
org.glassfish.grizzly.http.util.MimeHeaders$1 cannot be cast to
java.util.Enumeration
at
org.glassfish.grizzly.servlet.HttpServletRequestImpl.getHeaderNames(HttpServletRequestImpl.java:822)
at
com.sun.jersey.spi.container.servlet.WebComponent.getHeaders(WebComponent.java:880)
at
com.sun.jersey.spi.container.servlet.WebComponent.createRequest(WebComponent.java:450)
at
com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:380)
at
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
at
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:708)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at
org.glassfish.grizzly.servlet.ServletHandler$FilterChainImpl.doFilter(ServletHandler.java:985)
at
org.glassfish.grizzly.servlet.ServletHandler$FilterChainImpl.invokeFilterChain(ServletHandler.java:928)
at
org.glassfish.grizzly.servlet.ServletHandler.doServletService(ServletHandler.java:382)
at
org.glassfish.grizzly.servlet.ServletHandler.service(ServletHandler.java:330)
at
org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:163)
at
org.glassfish.grizzly.http.server.HttpHandlerChain.service(HttpHandlerChain.java:195)
at
org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:163)
at
org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:158)
at
org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at
org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:286)
at
org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:223)
at
org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:155)
at
org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:134)
at
org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:78)
at
org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:827)
at
org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:103)
at
org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:111)
at
org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55)
at
org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:131)
at
org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:508)
at
org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:488)
at java.lang.Thread.run(Thread.java:619)
Having debugged it I find that the problem seems to be in
org.glassfish.grizzly.servlet.HttpServletRequestImpl method "public
Enumeration getHeaderNames()" when (System.getSecurityManager() != null)
is true. In my case System.getSecurityManager() returns a
com.sun.javas.security.JavaWebstartSecurityManager instance.
Debugger shows that the following code:
AccessController.doPrivileged(
new GetHeaderNamesPrivilegedAction())
returns a org.glassfish.grizzly.htt.util.MimeHeaders.$1 rather than an
Enumeration which results in a ClassCastException.
If I set the System.getSecurityManager() to null in debugger then else
clause for the if is executed instead and all is well. Thsi explains why
in standalone mode things work.
This is a complex problem involving many moving parts and I would be
very grateful if someone from the dev team could please tell me if this
is a known issue, is it a problem in Glassfish or is it in Grizzly, if
there are any workarounds or anything else that will help and where to
go from here.
Thank you for your help.
--
Regards,
Farrukh Najmi
Web: http://www.wellfleetsoftware.com