I figured that the problem with OpenJFX 15ea was that the webview moved to state FAILED because I was using Https with a self signed SSL certificate for the webview URL. This worked fine in previous versions but fails in 15ea - so maybe a bug if its not intentional. I couldn't find a nice way to print the exception from the code so I'm adding a screen capture from the debugger. If you can show me how to access the exception from inside a StateListener I can print the stack trace nicely for you.
So I switched to Http and was able to run webview and so far it seems that 15ea indeed solves my original lockup problem. > ---------------------------------------- > From: Guru <guru...@oracle.com> > Sent: Thu Feb 13 04:47:52 CET 2020 > To: Lior Yaffe <lior.ya...@jelurida.com> > Cc: <openjfx-dev@openjdk.java.net> > Subject: Re: JavaFX 13 Webview hangs > > > Hi Lior, > > Could you share a simplified test application with the html content or web > content which leads to “webview frame comes up empty” so that I can test and > debug at my end. > > Thanks, > Guru > > > On 11-Feb-2020, at 8:51 PM, Lior Yaffe <lior.ya...@jelurida.com> wrote: > > > > Test results: > > OpenJFX 11 never hangs > > OpenJFX 13 always hangs > > OpenJFX 15ea the webview frame comes up empty but the runtime never hangs > > > > The Java version has no effect. > > The hang seems to occur in native code since there is no way to take a > > thread dump using jstack and the only possible action is to kill the > > process. > > Is there any other logging or diagnostic you can suggest? > > > > > > February 10, 2020 7:24:54 PM CET Kevin Rushforth > > <kevin.rushfo...@oracle.com> wrote: Can you also try JDK 11 with OpenJFX > > 13? I suspect it will not make a difference (i.e., it will still hang), > > but it would be good to confirm. And even more interesting will be the > > results of JavaFX 15-ea. > > > > Thanks. > > > > -- Kevin > > > > On 2/10/2020 10:17 AM, Lior Yaffe wrote: > > > > The problem does not reproduce when using JavaFX 11 regardless of > > the version of Java being used. > > I will try with Java 15ea > > > > On Mon, Feb 10, 2020, 17:01 Kevin Rushforth > > <kevin.rushfo...@oracle.com> wrote: > > > > And one last thing to try: can you run it with the JavaFX > > 15-ea+1 build > > and see if that makes a difference? > > > > -- Kevin > > > > On 2/10/2020 6:59 AM, Kevin Rushforth wrote: > >> Seems I missed your comment about it being hung to the point you > >> can't > >> run jstack. > >> > >> If you are using JDK 12 or later, you might try with JDK 11 and > >> see if > >> that makes a difference. It will help narrow it down to a change > >> in > >> the JDK versus a change in JavaFX (although I suspect it's a > >> change in > >> JavaFX). > >> > >> -- Kevin > >> > >> On 2/10/2020 6:40 AM, Kevin Rushforth wrote: > >>> A thread stack dump using "jstack" might be helpful. > >>> > >>> Also, what version of the JDK are you running? > >>> > >>> -- Kevin > >>> > >>> > >>> On 2/9/2020 4:07 AM, Lior Yaffe wrote: > >>>> My application is a Java application running a Javascript/Html > >>>> website > >>>> inside a JavaFX WebView. It was working stable for several > >>>> years with > >>>> various versions of Java and JavaFX. > >>>> As far as I can tell it is following best coding practices such > >>>> as > >>>> running > >>>> all UI code in the JavaFX thread and as such. > >>>> > >>>> Since upgrading to JavaFX 13 my application hangs sporadically. > >>>> When it > >>>> happens the website running inside the webview becomes > >>>> unresponsive and > >>>> displays an hourglass icon. > >>>> When the app hangs I cannot take a thread dump using jstack or > >>>> close > >>>> the > >>>> application. I have to kill it. > >>>> > >>>> The problem is reproduced on multiple Windows workstations. It > >>>> was > >>>> never > >>>> reported or reproduced on Linux or Mac so there is a chance it > >>>> is > >>>> Windows > >>>> specific. > >>>> When the app hangs the CPU is ideal so this is not a busy loop. > >>>> Which diagnostic information can I obtain to better understand > >>>> this > >>>> problem? > >>> > >> >
