8.2 Plugin updates.netbeans.org No longer Available

[Eric Bresie <eb...@gmail.com>]

I received a notification for the Netbeans 15 available.

However in Netbeans 14, I attempted to use "Help...Check for Updates" (I
think this may be checking for plugin updates but was hoping for it to find
the Netbeans 15 update as well) and received a failure when attempting.

Window showed

Check your network connection, verify that your proxy settings
are configured correctly in the NetBeans IDE, or try again later.


I believe it is caused by reference to "update.netbeans.org" site as
mentioned in the output in the IDE indicating

INFO [org.netbeans.ui.indexing]: Indexing finished, indexing took 0 ms.
*INFO [org.netbeans.modules.autoupdate.updateprovider.DownloadListener]:
Reading URL
http://updates.netbeans.org/netbeans/updates/8.2/uc/final/distribution/catalog.xml.gz
<http://updates.netbeans.org/netbeans/updates/8.2/uc/final/distribution/catalog.xml.gz>
failed (javax.net.ssl.SSLHandshakeException: No subject alternative DNS
name matching updates.netbeans.org <http://updates.netbeans.org> found.)*
INFO [org.netbeans.modules.autoupdate.ui.actions.AutoupdateCheckScheduler]
java.security.cert.CertificateException: No subject alternative DNS name
matching updates.netbeans.org found.
at
java.base/sun.security.util.HostnameChecker.matchDNS(HostnameChecker.java:212)
at
java.base/sun.security.util.HostnameChecker.match(HostnameChecker.java:103)
at
java.base/sun.security.ssl.X509TrustManagerImpl.checkIdentity(X509TrustManagerImpl.java:455)
at
java.base/sun.security.ssl.X509TrustManagerImpl.checkIdentity(X509TrustManagerImpl.java:415)
at
java.base/sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:229)
at
java.base/sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:129)
at
java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.checkServerCerts(CertificateMessage.java:1341)
Caused: javax.net.ssl.SSLHandshakeException: No subject alternative DNS
name matching updates.netbeans.org found.
at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:131)
at
java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:353)
at
java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:296)
at
java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:291)
at
java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.checkServerCerts(CertificateMessage.java:1357)
at
java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.onConsumeCertificate(CertificateMessage.java:1232)
at
java.base/sun.security.ssl.CertificateMessage$T13CertificateConsumer.consume(CertificateMessage.java:1175)
at java.base/sun.security.ssl.SSLHandshake.consume(SSLHandshake.java:392)
at
java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:443)
at
java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:421)
at
java.base/sun.security.ssl.TransportContext.dispatch(TransportContext.java:183)
at java.base/sun.security.ssl.SSLTransport.decode(SSLTransport.java:172)
at java.base/sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1506)
at
java.base/sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocketImpl.java:1416)
at
java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:456)
at
java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:427)
at
java.base/sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:572)
at
java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:201)
at
java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:168)
at
org.netbeans.modules.autoupdate.updateprovider.NetworkAccess$Task.checkRedirect(NetworkAccess.java:180)
at
org.netbeans.modules.autoupdate.updateprovider.NetworkAccess$Task.access$800(NetworkAccess.java:60)
at
org.netbeans.modules.autoupdate.updateprovider.NetworkAccess$Task$2.call(NetworkAccess.java:148)
at
org.netbeans.modules.autoupdate.updateprovider.NetworkAccess$Task$2.call(NetworkAccess.java:130)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829)
Caused: java.io.IOException: No subject alternative DNS name matching
updates.netbeans.org found.
at
org.netbeans.modules.autoupdate.updateprovider.DownloadListener.notifyException(DownloadListener.java:78)
at
org.netbeans.modules.autoupdate.updateprovider.AutoupdateCatalogCache.copy(AutoupdateCatalogCache.java:221)
at
org.netbeans.modules.autoupdate.updateprovider.AutoupdateCatalogCache.writeCatalogToCache(AutoupdateCatalogCache.java:74)
at
org.netbeans.modules.autoupdate.updateprovider.AutoupdateCatalogProvider.refresh(AutoupdateCatalogProvider.java:134)
at
org.netbeans.modules.autoupdate.services.UpdateUnitProviderImpl.refresh(UpdateUnitProviderImpl.java:165)
at
org.netbeans.api.autoupdate.UpdateUnitProvider.refresh(UpdateUnitProvider.java:171)
[catch] at
org.netbeans.modules.autoupdate.ui.actions.AutoupdateCheckScheduler$4.run(AutoupdateCheckScheduler.java:130)
at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
at
org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
at
org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)


updates.netbeans.org  currently seems to redirect to
https://www.oracle.com/downloads/

Can't remember if this 8.2 site was present in default configuration of
netbeans install or if it was added later but figured I'd reach out to see
if anyone else had a similar problem.

Eric Bresie
ebresie@gmail.com