The compatible with outlook email clients hosting of ICS files for the time zones is no longer available

[Stooge7]

BEFORE: https://web.archive.org/web/20130811152006/http://www.tzurl.org/zoneinfo-outlook/Europe/

AFTER: http://www.tzurl.org/zoneinfo-outlook/Europe/

The following code throws NullPointerException:

boolean compatibleWithOutlookEmailClients = false; TimezoneAssignment brussels = TimezoneAssignment.download(TimeZone.getTimeZone(TIME_ZONE), compatibleWithOutlookEmailClients);

[mangstadt]

Yikes, thanks for letting me know.

I cannot reproduce the issue you are having with the code you posted. Can you post the stacktrace?

[Stooge7]

Sorry it was late when I wrote this. So it is not NullpointerException but...

    boolean compatibleWithOutlookEmailClients = true;
    TimezoneAssignment brussels =
        TimezoneAssignment.download(TimeZone.getTimeZone('Europe/Brussels'), compatibleWithOutlookEmailClients);

java.lang.IllegalArgumentException: Timezone ID not recognized. at biweekly.io.TzUrlDotOrgGenerator.notFound(TzUrlDotOrgGenerator.java:152) at biweekly.io.TzUrlDotOrgGenerator.generate(TzUrlDotOrgGenerator.java:91) at biweekly.io.TimezoneAssignment.download(TimezoneAssignment.java:100) at com.traxxeo.calendar.Calendar.setTimeZone(Calendar.java:88) at com.traxxeo.calendar.Calendar.createICalendar(Calendar.java:67) at com.traxxeo.servlet.SendCalendarViaEmailServlet.doGet(SendCalendarViaEmailServlet.java:64) at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300) at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at oracle.adf.library.webapp.LibraryFilter.doFilter(LibraryFilter.java:180) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:119) at java.security.AccessController.doPrivileged(Native Method) at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315) at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:442) at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:103) at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:171) at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:139) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120) at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277) at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183) at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209) at weblogic.work.ExecuteThread.run(ExecuteThread.java:178) Caused by: java.io.FileNotFoundException: Response: '404: Not Found' for url: 'http://www.tzurl.org/zoneinfo-outlook/Europe/Brussels' at weblogic.net.http.HttpURLConnection.getInputStream(HttpURLConnection.java:487) at weblogic.net.http.SOAPHttpURLConnection.getInputStream(SOAPHttpURLConnection.java:37) at java.net.URL.openStream(URL.java:1010) at biweekly.io.TzUrlDotOrgGenerator.getInputStream(TzUrlDotOrgGenerator.java:141) at biweekly.io.TzUrlDotOrgGenerator.generate(TzUrlDotOrgGenerator.java:88) ... 34 more

[mangstadt]

Thanks. Yes, it will throw an IllegalArgumentException because it can't find the appropriate ICS file on the tzurl.org website.

[mangstadt]

Added a note to the Javadocs.

See: 3031b288222b759629acbb0e982fa1642afc825c

[Stooge7]

Great, do you know if there is a big difference between the outlook one and the other one?

I started to use the other version and it seems to be working (though I need outlook only), till the server owner decides to delete the non outlook version files as well...

I find it strange that the hosting of the ICS files is done on that server and the server doesn't even use SSH.

[mangstadt]

Great, do you know if there is a big difference between the outlook one and the other one?

I don't know what the exact differences are. My cynical assumption is that separate versions of the ICS files had to be created for Outlook because Microsoft does not have the best history of closely adhering to web standards (e.g. Internet Explorer). Maybe tzurl.org deleted many of them because Outlook has improved its ICS file support?

I find it strange that the hosting of the ICS files is done on that server and the server doesn't even use SSH.

I'm open to alternative approaches. My impression is that this website regenerates its timezone definitions on a frequent basis, which means that biweekly will always be using up-to-date definitions. Encryption would be nice I guess, but it's not really crucial since no personal information is being transferred.

[krshmbb]

@Stooge7 A few places mention that Outlook cannot handle RDATE well which is something that zoneinfo-outlook avoids.