Cookies are creating problem when deploying forum on Linux

[Migrated From Jforum.net]

I have deployed forum application of Linux and windows environment. It works fine on Windows environment.
For Linux, Forum page is not shown, appears blank, if I delete cookies, then it works but when I opens a new browser window, forum page is not accessed again.

Tomcat version used: 5.5.17.

It throws the follwing exception when blank page appears

org.xml.sax.SAXParseException: Premature end of file.
Continuing ...
java.util.NoSuchElementException
at java.util.Vector.lastElement(Vector.java:461)
at com.sun.beans.ObjectHandler.lastExp(ObjectHandler.java:132)
at com.sun.beans.ObjectHandler.dequeueResult(ObjectHandler.java:136)
at java.beans.XMLDecoder.readObject(XMLDecoder.java:218)
at net.jforum.JForum.checkCookies(JForum.java:360)
at net.jforum.JForum.service(JForum.java:453)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:754)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:684)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:876)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
java.util.NoSuchElementException
at java.util.Vector.lastElement(Vector.java:461)
at com.sun.beans.ObjectHandler.lastExp(ObjectHandler.java:132)
at com.sun.beans.ObjectHandler.dequeueResult(ObjectHandler.java:136)
at java.beans.XMLDecoder.readObject(XMLDecoder.java:218)
at net.jforum.JForum.checkCookies(JForum.java:360)
at net.jforum.JForum.service(JForum.java:453)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:754)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:684)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:876)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
[originally posted on jforum.net by shahbaz]

[Migrated From Jforum.net]

hello,

what browser are you using? Try to access the first page with another browser.

Regards,
Andrew Stepanenko
[originally posted on jforum.net by andrew.stepanenko]

[Migrated From Jforum.net]

I have tested this issue on IE 5+ as well as firefox. Browser is not the issue.
[originally posted on jforum.net by shahbaz]

[Migrated From Jforum.net]

what is the version of JForum you're using?
I went to the source code to track your exception, but the source is a CVS snapshot dated on Jul 31. Some methods changed and I cannot find your checkCookies() method in JForum.java .

Andrew.
[originally posted on jforum.net by andrew.stepanenko]

[Migrated From Jforum.net]

I am using older version 1.x
Here is some code where exception is thrown


private void checkCookies() throws IOException
{
// If userData is not, then must probably the user is entering right
// now in the website
if (SessionFacade.getUserSession() == null) {
UserSession userSession = new UserSession();

Cookie cookie = JForum.getCookie(SystemGlobals.getValue("cookieName").toString());

// If we don't have any cookie yet, then we should set it with the default values
if (cookie == null) {
userSession.setStartTime(System.currentTimeMillis());
userSession.setLastVisit(System.currentTimeMillis());
userSession.setUserId(Integer.parseInt(SystemGlobals.getValue("anonymousUserId").toString()));
userSession.setSessionId(JForum.getRequest().getSession().getId());

JForum.addSerializedCookie(SystemGlobals.getValue("cookieName").toString(), userSession);
}
else {
// Ok, we have a cookie. Time to get it from the oven
ByteArrayInputStream in = new ByteArrayInputStream(cookie.getValue().getBytes());
XMLDecoder decoder = new XMLDecoder(in);

userSession = (UserSession)decoder.readObject();

// Update last visit and session start time
userSession.setLastVisit(userSession.getStartTime() + userSession.getSessionTime());
userSession.setStartTime(System.currentTimeMillis());

decoder.close();
}

if (userSession.getAutoLogin()) {
SessionFacade.setAttribute("logged", "1");
}
else {
userSession.setUserId(Integer.parseInt(SystemGlobals.getValue("anonymousUserId").toString()));
}

userSession.setSessionId(JForum.getRequest().getSession().getId());
SessionFacade.add(userSession);
SessionFacade.setAttribute("topics_tracking", new HashMap());
}
else {
UserSession userSession = SessionFacade.getUserSession();
userSession.updateSessionTime();

JForum.addSerializedCookie(SystemGlobals.getValue("cookieName").toString(), userSession);
}
}
[originally posted on jforum.net by shahbaz]

[Migrated From Jforum.net]

shahbaz wrote:I am using older version 1.x ...

Is there a reason you don't upgrade to a newer version? That will probably be the recommendation ... probably not too many people (if any) supporting the older versions.
[originally posted on jforum.net by GatorBait3]

[Migrated From Jforum.net]

That's right.. older versions are not supported.

Rafael
[originally posted on jforum.net by Rafael Steil]

[Migrated From Jforum.net]

By installing latest version of jforum, I got rid of this issue.
[originally posted on jforum.net by shahbaz]

[Migrated From Jforum.net]

That's good to know!

Rafael
[originally posted on jforum.net by Rafael Steil]