[undertow-dev] Enable HTTP/2 and get JDK9 ALPN not supported

[Steve Hu]

Thanks Stuart for the quick response. Now I have server started with HTTP/2
and it works perfect with some client tools. Now I am looking for Java
HTTP/2 client libraries to update my client module to support HTTP/2
protocol for microservices communication. There are three major libraries
okhttp, jetty and netty but all of them require Jetty's ALPN boot JAR. I
saw you have resolved the boot jar dependency in Undertow and am wondering
if you could point me to the right direction. Do you have any
recommendation for HTTP/2 client library? How do you work around the alpn
boot jar? Is the same solution can be used by okhttp, jetty and netty
before Java 9 is released?



On Fri, Mar 17, 2017 at 11:03 PM, Stuart Douglas <sdouglas at redhat.com>
wrote:

> No, that is a debug level message. The JDK8 ALPN provider should still
> be registered.
>
> Stuart
>
> On Sat, Mar 18, 2017 at 12:18 PM, Steve Hu <stevehu at gmail.com> wrote:
> > Hi,
> >
> > I searched this mailing list and one post mentioned that I don't need to
> use
> > -Xbootclasspath/p:<path_to_alpn_boot_jar> after 1.4.0Final. I am trying
> > HTTP/2 on my server with 1.4.10 and Oracle JDK 1.8 but when I start the
> > server I got the following error. Do I have to use OpenJDK 8? If I
> switch to
> > JBoss OpenSSL implementation?
> >
> > Thanks,
> >
> > Steve
> >
> > 21:00:36.468 [main]  DEBUG io.undertow - Configuring listener with
> protocol
> > HTTPS for interface 0.0.0.0 and port 8843
> >
> > 21:00:36.486 [main]  DEBUG io.undertow - JDK9 ALPN not supported
> >
> > java.lang.NoSuchMethodException:
> > javax.net.ssl.SSLParameters.setApplicationProtocols([Ljava.lang.String;)
> >
> > at java.lang.Class.getMethod(Class.java:1786)
> >
> > at
> > io.undertow.protocols.alpn.JDK9AlpnProvider$1.run(
> JDK9AlpnProvider.java:47)
> >
> > at
> > io.undertow.protocols.alpn.JDK9AlpnProvider$1.run(
> JDK9AlpnProvider.java:43)
> >
> > at java.security.AccessController.doPrivileged(Native Method)
> >
> > at
> > io.undertow.protocols.alpn.JDK9AlpnProvider.<clinit>(
> JDK9AlpnProvider.java:43)
> >
> > at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> >
> > at
> > sun.reflect.NativeConstructorAccessorImpl.newInstance(
> NativeConstructorAccessorImpl.java:62)
> >
> > at
> > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(
> DelegatingConstructorAccessorImpl.java:45)
> >
> > at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> >
> > at java.lang.Class.newInstance(Class.java:442)
> >
> > at java.util.ServiceLoader$LazyIterator.nextService(
> ServiceLoader.java:380)
> >
> > at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404)
> >
> > at java.util.ServiceLoader$1.next(ServiceLoader.java:480)
> >
> > at io.undertow.protocols.alpn.ALPNManager.<init>(ALPNManager.java:40)
> >
> > at io.undertow.protocols.alpn.ALPNManager.<clinit>(ALPNManager.java:35)
> >
> > at
> > io.undertow.server.protocol.http.AlpnOpenListener.<init>(
> AlpnOpenListener.java:67)
> >
> > at
> > io.undertow.server.protocol.http.AlpnOpenListener.<init>(
> AlpnOpenListener.java:90)
> >
> > at io.undertow.Undertow.start(Undertow.java:179)
> >
> > at com.networknt.server.Server.start(Server.java:170)
> >
> > at com.networknt.server.Server.main(Server.java:90)
> >
> > 21:00:36.503 [main]  INFO  com.networknt.server.Server - Https Server
> > started on ip:0.0.0.0 Port:8843
> >
> >
> > _______________________________________________
> > undertow-dev mailing list
> > undertow-dev at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/undertow-dev
>
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