apns | @judepereira

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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Tag: apns

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