java.lang.IllegalStateException: Channel closed before HTTP/2 preface completed

I have a problem when connecting to APNS (using pushy version 0.7.3):

java.lang.IllegalStateException: Channel closed before HTTP/2 preface completed.
 at com.relayrides.pushy.apns.ApnsClient$2.operationComplete(ApnsClient.java:712)
 at com.relayrides.pushy.apns.ApnsClient$2.operationComplete(ApnsClient.java:704)
 at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:518)
 at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:492)
 at io.netty.util.concurrent.DefaultPromise.notifyListenersWithStackOverFlowProtection(DefaultPromise.java:431)
 at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:420)
 at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:108)
 at io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:82)
 at io.netty.channel.AbstractChannel$CloseFuture.setClosed(AbstractChannel.java:1049)
 at io.netty.channel.AbstractChannel$AbstractUnsafe.doClose0(AbstractChannel.java:674)
 at io.netty.channel.AbstractChannel$AbstractUnsafe.close(AbstractChannel.java:652)
 at io.netty.channel.AbstractChannel$AbstractUnsafe.close(AbstractChannel.java:596)
 at io.netty.channel.DefaultChannelPipeline$HeadContext.close(DefaultChannelPipeline.java:1256)
 at io.netty.channel.AbstractChannelHandlerContext.invokeClose(AbstractChannelHandlerContext.java:610)
 at io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:594)
 at io.netty.channel.ChannelOutboundHandlerAdapter.close(ChannelOutboundHandlerAdapter.java:71)
 at io.netty.channel.AbstractChannelHandlerContext.invokeClose(AbstractChannelHandlerContext.java:610)
 at io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:594)
 at io.netty.handler.ssl.SslHandler.closeOutboundAndChannel(SslHandler.java:1250)
 at io.netty.handler.ssl.SslHandler.close(SslHandler.java:459)
 at io.netty.channel.AbstractChannelHandlerContext.invokeClose(AbstractChannelHandlerContext.java:610)
 at io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:594)
 at io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:451)
 at io.netty.channel.DefaultChannelPipeline.close(DefaultChannelPipeline.java:943)
 at io.netty.channel.AbstractChannel.close(AbstractChannel.java:227)
 at io.netty.channel.ChannelFutureListener$2.operationComplete(ChannelFutureListener.java:56)
 at io.netty.channel.ChannelFutureListener$2.operationComplete(ChannelFutureListener.java:52)
 at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:518)
 at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:511)
 at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:490)
 at io.netty.util.concurrent.DefaultPromise.notifyListenersWithStackOverFlowProtection(DefaultPromise.java:431)
 at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:420)
 at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:126)
 at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.fulfillConnectPromise(AbstractNioChannel.java:325)
 at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:341)
 at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:580)
 at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:504)
 at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:418)
 at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:390)
 at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:742)
 at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:145)
 at java.lang.Thread.run(Thread.java:745)

The code, when stripped off of my constants, is

        apnsClient = new ApnsClient<>(
                MyApnsClient.class.getResourceAsStream("MyCertificate.p12"),
                "password");
        Future<Void> connectFuture = apnsClient.connect(
                ApnsClient.DEVELOPMENT_APNS_HOST,
                ApnsClient.DEFAULT_APNS_PORT);
        connectFuture.get(10_000, TimeUnit.MILLISECONDS); // here the exception happens

It worked fine on several different hosts previously (development, staging). The problem happened on the production host on the first deploy.

Are there any workarounds possible? Should I try connecting several times? Should I wait longer? This happened in the environment that I don’t control, so I’ll have to account for such situations in the code… Deployers refused to proceed further until I do something about it and claim the problem to be resolved (:

If more information is necessary, I’ll be happy to provide it. Thank you.

[jchambers]

@agyorev Sounds like there’s some kind of version mismatch between Netty and whichever version of netty-tcnative you’re trying to use. Are you using either (a) Windows or (b) Tomcat?

[agyorev]

@jchambers Nope, Jetty.