HTTP, HTTPS, HTTP2 avec Undertow

undertow-http2

package fr.sewatech.demo.http2.undertow;

import io.undertow.Undertow;
import io.undertow.UndertowOptions;
import io.undertow.server.HttpServerExchange;
import io.undertow.util.Headers;

import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import java.security.KeyStore;

public class StartHttp2 {

    private static final String KEYSTORE_TYPE = "PKCS12";
    private static final String KEYSTORE_FILE = "undertow.pfx";
    private static final String KEYSTORE_PASSWORD = "tomcat";
    private static final String TLS_VERSION = "TLSv1.2";

    public static void main(final String[] args) throws Exception {
        Undertow simpleServer = Undertow.builder()
                .addHttpListener(8000, "localhost")
                .setHandler(StartHttp2::hello)
                .build();
        simpleServer.start();

        Undertow sslServer = Undertow.builder()
                .addHttpsListener(8001, "localhost", buildSslContext())
                .setHandler(StartHttp2::hello)
                .build();
        sslServer.start();

        Undertow http2Server = Undertow.builder()
                .addHttpsListener(8002, "localhost", buildSslContext())
                .setServerOption(UndertowOptions.ENABLE_HTTP2, true)
                .setHandler(StartHttp2::hello)
                .build();
        http2Server.start();
    }

    private static SSLContext buildSslContext() throws Exception {
        ClassLoader classLoader = Thread.currentThread().getContextClassLoader();

        KeyStore keyStore = KeyStore.getInstance(KEYSTORE_TYPE);
        keyStore.load(
                classLoader.getResourceAsStream(KEYSTORE_FILE),
                KEYSTORE_PASSWORD.toCharArray());
        KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
        keyManagerFactory.init(keyStore, KEYSTORE_PASSWORD.toCharArray());

        SSLContext sslContext = SSLContext.getInstance(TLS_VERSION);
        sslContext.init(keyManagerFactory.getKeyManagers(), null, null);
        return sslContext;
    }

    private static void hello(HttpServerExchange exchange) {
        exchange.getResponseHeaders().put(Headers.CONTENT_TYPE, "text/plain");
        exchange.getResponseSender().send("Hello World");
    }
}