> -----Original Message----- > From: Mark Thomas [mailto:ma...@apache.org] > Sent: Wednesday, July 11, 2012 4:28 PM > To: Tomcat Developers List > Subject: Re: Unit tests and trunk > > On 11/07/2012 22:39, Filip Hanik (mailing lists) wrote: > > Ok, I have a resolution to this, it's a IPv6 problem. The reason it > worked > > on my virtual machine, is cause the virtual machine doesn't have IPv6 > > > > When I add > > <jvmarg value="-Djava.net.preferIPv4Stack=true"/> > > > > To the unit tests, it works fine on Windows. > > > > Here is what led me to believe in this: > > http://blog.bielu.com/2011/11/hotspot-64bit-server-hangs-on- > socket.html > > Hmm. It looks like Oracle failed to reproduce the issue - possibly > because the IPv6 part was not clear in the original bug report. Probably > time to raise an issue with Oracle with clearer instructions to > reproduce. (I have a clean Win 7 VM I am happy to trial any test case on > if that helps). [Filip Hanik] I wasn't able to reproduce on a Win 7 VM because the VM environment itself doesn't support IPv6
> > Mark > > > > > >> -----Original Message----- > >> From: Filip Hanik (mailing lists) [mailto:devli...@hanik.com] > >> Sent: Wednesday, July 11, 2012 2:54 PM > >> To: 'Tomcat Developers List' > >> Subject: RE: Unit tests and trunk > >> > >> The idea of creating a VM that is like mine was a good one. > >> I did a clean install of Windows 7 64 bit, and it works like a charm. > >> My network stack must have something installed at the network stack > >> > >> Filip > >> > >>> -----Original Message----- > >>> From: Mark Thomas [mailto:ma...@apache.org] > >>> Sent: Wednesday, July 11, 2012 1:32 PM > >>> To: Tomcat Developers List > >>> Subject: Re: Unit tests and trunk > >>> > >>> On 11/07/2012 20:13, Filip Hanik (mailing lists) wrote: > >>>> > >>>> > >>>>> -----Original Message----- > >>>>> From: Filip Hanik (mailing lists) [mailto:devli...@hanik.com] > >>>>> Sent: Wednesday, July 11, 2012 10:13 AM > >>>>> To: 'Tomcat Developers List' > >>>>> Subject: RE: Unit tests and trunk > >>>>> > >>>>> > >>>>> > >>>>>> -----Original Message----- > >>>>>> From: Mark Thomas [mailto:ma...@apache.org] > >>>>>> Sent: Wednesday, July 11, 2012 2:45 AM > >>>>>> To: Tomcat Developers List > >>>>>> Subject: Re: Unit tests and trunk > >>>>>> > >>>>>> On 11/07/2012 02:27, Filip Hanik (mailing lists) wrote: > >>>>>>> Here's what I've found out so far > >>>>>>> > >>>>>>> The patch below does solve the problem. In a rather remarkable > >> way. > >>>>>>> The line > >>>>>>> int cnt = socket.write(buf); //write the data > >>>>>>> > >>>>>>> never returns 0, meaning the writes are always blocking. Even > >>> though > >>>>>> they > >>>>>>> are not supposed to be. > >>>>>>> Remove this patch, and socket.write(buf) returns 0, and then we > >>>>> never > >>>>>> get > >>>>>>> issued the OP_WRITE from the selector itself. > >>>>>> > >>>>>> I'm not sure I follow the above. Remove the patch and it returns > >> 0? > >>>>> [Filip Hanik] > >>>>> Correct, as it should. The buffer should fill up very quick, and > >> when > >>>>> the > >>>>> buffer is full NIO returns 0, can't write. > >>>>> So there are two problems: > >>>>> a) The selector doesn't work the same in Java 7 as it does in Java > >> 5 > >>> and > >>>>> 6 > >>>>> b) Starting a new selector turns non blocking writes into > blocking, > >>> even > >>>>> when I write 10MB in the TestOutputBuffer test, there is not a > >> single > >>>>> socket.write that returns 0. Removing the Selector.open call, and > >>>>> immediately we have a hit return 0 as expected. > >>>>> > >>>>> > >>>>>> > >>>>>> Regardless, it seems very strange that the patch below fixes it. > I > >>> had > >>>>> a > >>>>>> quick look through the Java source and couldn't see anything > >>>>> immediately > >>>>>> obvious. Any ideas what is going on? > >>>>> [Filip Hanik] > >>>>> Can't think of anything but a bug in the JDK. I'll keep > >>> investigating. > >>>>> Possibly we have to move the async NIO stuff to get it to work > >>>> [Filip Hanik] > >>>> Btw, this affects the BIO connector too. The write blocks and hangs > >>> forever. > >>>> Maybe it's just my Windows 7 system. Works fine on linux. > >>> > >>> Let me see if I can find (or create if necessary) a clean-ish > Windows > >> 7 > >>> VM to test this on. > >>> > >>> Mark > >>> > >>> -------------------------------------------------------------------- > - > >>> To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org > >>> For additional commands, e-mail: dev-h...@tomcat.apache.org > >> > >> > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org > >> For additional commands, e-mail: dev-h...@tomcat.apache.org > > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org > > For additional commands, e-mail: dev-h...@tomcat.apache.org > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org > For additional commands, e-mail: dev-h...@tomcat.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org For additional commands, e-mail: dev-h...@tomcat.apache.org
