DoUnlock fails with NullPointerException when accessed with Windows (or Linux) and MacOS concurrently.

[jackgene]

The system seems to work fine in Windows-only, Linux-only or Mac-only environments. However, as soon as a Mac client and a Windows or Linux client tries to access the DAV mount, the next DoUnlock will fail with the following NullPointerException, and all subsequent write accesses will fail until lock times out for a given file.

[caarlos0]

Hi @jackgene, you forgot to add the exception.

Anyways, check out the file paths: / vs \ and remember that the URL encode process may not work as expected in some cases.

Cheers

[jackgene]

Oops, here's the stack trace:
16:14:30.861 [http-nio-9642-exec-4] ERROR net.sf.webdav.WebDavServletBean - Exception: java.lang.NullPointerException
at net.sf.webdav.locking.LockedObject.removeLockedObjectOwner(LockedObject.java:123)
at net.sf.webdav.locking.ResourceLocks.unlock(ResourceLocks.java:136)
at net.sf.webdav.methods.DoUnlock.execute(DoUnlock.java:72)
at net.sf.webdav.WebDavServletBean.service(WebDavServletBean.java:129)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1571)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)

I've also submitted a pull request, looks like it's a pretty simple fix.