PUSHY APNS - AnnotatedSocketException: Network is unreachable: api.sandbox.push.apple.com/2620

[manishjava8]

I use the PUSHY library 0.15.2 version to send push notifications to iOS devices using Spring boot.

The APNS code looks like this -

ApnsClientBuilder clientBuilder = new ApnsClientBuilder();
            clientBuilder.setApnsServer(ApnsClientBuilder.DEVELOPMENT_APNS_HOST);
            clientBuilder.setConnectionTimeout(Duration.ofMillis(60000));
            File file = new File(getClass().getClassLoader().getResource("zzzzz").getFile());
            clientBuilder.setClientCredentials(file, "yyyyy");

            apnsClient = clientBuilder.build();

            ApnsPayloadBuilder payloadBuilder = new SimpleApnsPayloadBuilder();
            payloadBuilder.setAlertTitle("xxxx");
            payloadBuilder.setAlertBody("This is test message");

            SimpleApnsPushNotification pushNotification = new SimpleApnsPushNotification(messageDto.getDeviceId(),
                    "com.np.gotprint", payloadBuilder.build());
            apnsClient.sendNotification(pushNotification).get();
            
            System.out.println("send successfully");

but I am getting the following error -

Caused by: io.netty.channel.AbstractChannel$AnnotatedSocketException: Network is unreachable: api.sandbox.push.apple.com/2620:149:208:304:0:0:0:1f:443
Caused by: java.net.SocketException: Network is unreachable
    at sun.nio.ch.Net.connect0(Native Method)
    at sun.nio.ch.Net.connect(Net.java:454)
    at sun.nio.ch.Net.connect(Net.java:446)
    at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:648)
    at io.netty.util.internal.SocketUtils$3.run(SocketUtils.java:83)
    at io.netty.util.internal.SocketUtils$3.run(SocketUtils.java:80)
    at java.security.AccessController.doPrivileged(Native Method)
    at io.netty.util.internal.SocketUtils.connect(SocketUtils.java:80)

Note - When I run the code locally, it works fine, throws an error when I deploy in staging env.

sometimes I get the following error

Caused by: java.io.IOException: Stream closed before a reply was received
	at com.eatthepath.pushy.apns.ApnsClientHandler.<clinit>(ApnsClientHandler.java:84)
	at com.eatthepath.pushy.apns.ApnsClientHandler$ApnsClientHandlerBuilder.build(ApnsClientHandler.java:138)
	at com.eatthepath.pushy.apns.ApnsClientHandler$ApnsClientHandlerBuilder.build(ApnsClientHandler.java:91)
	at io.netty.handler.codec.http2.AbstractHttp2ConnectionHandlerBuilder.buildFromCodec(AbstractHttp2ConnectionHandlerBuilder.java:551)
	at io.netty.handler.codec.http2.AbstractHttp2ConnectionHandlerBuilder.buildFromConnection(AbstractHttp2ConnectionHandlerBuilder.java:540)
	at io.netty.handler.codec.http2.AbstractHttp2ConnectionHandlerBuilder.build(AbstractHttp2ConnectionHandlerBuilder.java:504)
	at com.eatthepath.pushy.apns.ApnsClientHandler$ApnsClientHandlerBuilder.build(ApnsClientHandler.java:145)
	at com.eatthepath.pushy.apns.ApnsChannelFactory$1.initChannel(ApnsChannelFactory.java:129)
	at com.eatthepath.pushy.apns.ApnsChannelFactory$1.initChannel(ApnsChannelFactory.java:97)
	at io.netty.channel.ChannelInitializer.initChannel(ChannelInitializer.java:129)

Am I doing something wrong here?

[jchambers]

This sounds like a network configuration problem. What happens if you try to connect to api.sandbox.push.apple.com:443 using, say, curl?

[jchambers]

I repeat: what happens if you try using another tool like curl?

curl https://api.sandbox.push.apple.com

[manishjava8]

on staging env -
curl https://api.sandbox.push.apple.com
@@+???Unexpected HTTP/1.x request: GET /

on local -
curl https://api.sandbox.push.apple.com
{"reason":"MethodNotAllowed"}%

[manishjava8]

how to install http2 in centos7?

[manishjava8]

please help, I am getting following error--

Caused by: java.io.IOException: Stream closed before a reply was received
	at com.eatthepath.pushy.apns.ApnsClientHandler.<clinit>(ApnsClientHandler.java:84)
	at com.eatthepath.pushy.apns.ApnsClientHandler$ApnsClientHandlerBuilder.build(ApnsClientHandler.java:138)
	at com.eatthepath.pushy.apns.ApnsClientHandler$ApnsClientHandlerBuilder.build(ApnsClientHandler.java:91)
	at io.netty.handler.codec.http2.AbstractHttp2ConnectionHandlerBuilder.buildFromCodec(AbstractHttp2ConnectionHandlerBuilder.java:551)
	at io.netty.handler.codec.http2.AbstractHttp2ConnectionHandlerBuilder.buildFromConn

[jchambers]

@manishjava8 this appears to just be a restatement of this original problem and provides no new information.

I repeat that the problem appears to be with your network configuration, and not with Pushy. I do not know what the problem is. The best suggestions I can offer with the information available are:

1. Make sure you're running a version of Java that supports ALPN (i.e. recent updates of Java 8, or anything from Java 9 and up)
2. If that doesn't work, try to isolate the problem by trying to send a notification using the instructions from https://developer.apple.com/documentation/usernotifications/sending_push_notifications_using_command-line_tools

In the end, though, you're going to have to do some debugging on your own and try to figure out why you're unable to open a connection to Apple's servers. Again, at this point, this does not appear to be a problem with Pushy.