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

[Priti Kelvekar]

Hi,

I have written a java program to send push notification using pushy. On trying to send push notification by connecting to broadband connection getting following error. Switching to mobile hotspot isn't giving the error. I don't have any proxy configured on my machine. Need help understanding the issue and what needs to be done to take care of it.

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

at io.netty.util.concurrent.AbstractFuture.get(AbstractFuture.java:41)

at apnsprj.SendNotification.dispatch(SendNotification.java:142)

at apnsprj.SendNotification.main(SendNotification.java:53)

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

at com.turo.pushy.apns.ApnsChannelFactory$3$2.operationComplete(ApnsChannelFactory.java:218)

at com.turo.pushy.apns.ApnsChannelFactory$3$2.operationComplete(ApnsChannelFactory.java:212)

at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:511)

at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:485)

at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:424)

at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:103)

at io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:84)

at io.netty.channel.AbstractChannel$CloseFuture.setClosed(AbstractChannel.java:1148)

at io.netty.channel.AbstractChannel$AbstractUnsafe.doClose0(AbstractChannel.java:764)

at io.netty.channel.AbstractChannel$AbstractUnsafe.close(AbstractChannel.java:740)

at io.netty.channel.AbstractChannel$AbstractUnsafe.close(AbstractChannel.java:611)

at io.netty.channel.DefaultChannelPipeline$HeadContext.close(DefaultChannelPipeline.java:1376)

at io.netty.channel.AbstractChannelHandlerContext.invokeClose(AbstractChannelHandlerContext.java:624)

at io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:608)

at io.netty.handler.ssl.SslHandler.closeOutboundAndChannel(SslHandler.java:1586)

at io.netty.handler.ssl.SslHandler.close(SslHandler.java:710)

at io.netty.channel.AbstractChannelHandlerContext.invokeClose(AbstractChannelHandlerContext.java:624)

at io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:608)

at io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:465)

at io.netty.channel.DefaultChannelPipeline.close(DefaultChannelPipeline.java:1003)

at io.netty.channel.AbstractChannel.close(AbstractChannel.java:238)

at io.netty.bootstrap.Bootstrap$2.operationComplete(Bootstrap.java:229)

at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:511)

at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:485)

at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:424)

at io.netty.util.concurrent.DefaultPromise.setFailure(DefaultPromise.java:112)

at io.netty.resolver.InetSocketAddressResolver$1.operationComplete(InetSocketAddressResolver.java:64)

at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:511)

at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:485)

at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:424)

at io.netty.util.concurrent.DefaultPromise.setFailure(DefaultPromise.java:112)

at io.netty.resolver.RoundRobinInetAddressResolver$1.operationComplete(RoundRobinInetAddressResolver.java:71)

at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:511)

at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:504)

at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:483)

at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:424)

at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:121)

at io.netty.resolver.dns.DnsResolveContext$2.operationComplete(DnsResolveContext.java:176)

at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:511)

at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:485)

at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:424)

at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:121)

at io.netty.resolver.dns.DnsResolveContext.finishResolve(DnsResolveContext.java:726)

at io.netty.resolver.dns.DnsResolveContext.tryToFinishResolve(DnsResolveContext.java:679)

at io.netty.resolver.dns.DnsResolveContext.query(DnsResolveContext.java:335)

at io.netty.resolver.dns.DnsResolveContext.query(DnsResolveContext.java:324)

at io.netty.resolver.dns.DnsResolveContext.access$700(DnsResolveContext.java:62)

at io.netty.resolver.dns.DnsResolveContext$3.operationComplete(DnsResolveContext.java:375)

at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:511)

at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:485)

at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:424)

at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:121)

at io.netty.resolver.dns.DnsQueryContext.setFailure(DnsQueryContext.java:223)

at io.netty.resolver.dns.DnsQueryContext.access$300(DnsQueryContext.java:42)

at io.netty.resolver.dns.DnsQueryContext$4.run(DnsQueryContext.java:162)

at io.netty.util.concurrent.PromiseTask$RunnableAdapter.call(PromiseTask.java:38)

at io.netty.util.concurrent.ScheduledFutureTask.run(ScheduledFutureTask.java:125)

at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)

at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404)

at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:465)

at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)

at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)

at java.lang.Thread.run(Unknown Source)

[main] INFO com.turo.pushy.apns.ApnsClient - Shutting down.

[Jon Chambers]

Hello!

I believe you also reported this as https://github.com/jchambers/pushy/issues/777, which suggests there may be some DNS issues at play. Unfortunately, I don't know what's going wrong, but it certainly sounds like it's some kind of network configuration issue beyond Pushy's control.

-Jon

[Priti Kelvekar]

Hello Jon,

What I don't understand is that the behavior is intermittent and it suddenly starts working after some time. At the same time on checking with curl the server seems to be running.

--
Pushy is an open-source Java library for sending APNs (iOS and OS X) push notifications. Pushy is brought to you by the engineers at RelayRides.
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