Sending notifications via Apple’s new HTTP/2 API (using Jetty 9.3.6)

HTTP/2 is still very much new to Java, and as such, there are just two libraries who support it – Jetty (from 9.3), and Netty (in alpha). If you’re going the Jetty way (as I have), you’ll need to add their ALPN library to your boot classpath.

Note: Jetty 9.3.x requires the use of Java 8.

A full library for this is available here, on GitHub.

Here’s a quick example:

package com.judepereira.jetty.apns.http2;
import org.eclipse.jetty.client.HttpClient;
import org.eclipse.jetty.client.api.ContentResponse;
import org.eclipse.jetty.client.api.Request;
import org.eclipse.jetty.client.util.StringContentProvider;
import org.eclipse.jetty.http2.client.HTTP2Client;
import org.eclipse.jetty.http2.client.http.HttpClientTransportOverHTTP2;
import org.eclipse.jetty.util.ssl.SslContextFactory;
import java.io.FileInputStream;
import java.security.KeyStore;
public class Main {
public static void main(String[] args) throws Exception {
HTTP2Client http2Client = new HTTP2Client();
http2Client.start();
KeyStore ks = KeyStore.getInstance("PKCS12");
// Ensure that the password is the same as the one used later in setKeyStorePassword()
ks.load(new FileInputStream("MyProductionOrDevelopmentCertificate.p12"), "".toCharArray());
SslContextFactory ssl = new SslContextFactory(true);
ssl.setKeyStore(ks);
ssl.setKeyStorePassword("");
HttpClient client = new HttpClient(new HttpClientTransportOverHTTP2(http2Client), ssl);
client.start();
// Change the API endpoint to api.development.push.apple.com if you're using a development certificate
Request req = client.POST("https://api.push.apple.com")
// Update your :path "/3/device/<your token>"
.path("/3/device/b2482deaf55521b2ccd755d5817a39784cc0044e24s3523a4708c2fa08983bdf")
.content(new StringContentProvider("{ \"aps\" : { \"alert\" : \"Hello\" } }"));
ContentResponse response = req.send();
System.out.println("response code: " + response.getStatus());
// The response body is empty for successful requests
System.out.println("response body: " + response.getContentAsString());
}
}

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Main.java
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