[英]Embedded Java server using Grizzly: How do you enable http2
So I am trying to create a REST API server using Grizzly / Jersey and it is working fine but I am not able to figure out how to enable http2. 所以我试图使用Grizzly / Jersey创建一个REST API服务器,它工作正常,但我无法弄清楚如何启用http2。 Documentation on this subject is all but non-existent.
关于这个主题的文档几乎不存在。 This is what I have:
这就是我所拥有的:
private static SSLContext getSSLContext(final String keystore) throws Exception {
SSLContext sslContext = SSLContext.getInstance("TLSv1");
final char[] passphrase = "changeit".toCharArray();
final KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
final KeyStore ks = KeyStore.getInstance("JKS");
try (InputStream stream = Main.class.getResourceAsStream(keystore)) {
ks.load(stream, passphrase);
}
kmf.init(ks, passphrase);
sslContext.init(kmf.getKeyManagers(), null, null);
return sslContext;
}
final ResourceConfig rc = new ResourceConfig().packages("path.to.package");
final HttpServer server = GrizzlyHttpServerFactory.createHttpServer(uri, rc, false);
final NetworkListener listener = server.getListeners().iterator().next();
listener.registerAddOn(new Http2AddOn());
listener.setSecure(true);
final SSLEngineConfigurator configurator =
new SSLEngineConfigurator(
getSSLContext("keystore.jks"),
false,
false,
false
);
listener.setSSLEngineConfig(configurator);
And, as far as I know, I have all the appropriate dependencies in my pom.xml file: 而且,据我所知,我的pom.xml文件中包含所有相应的依赖项:
<dependency>
<groupId>org.glassfish.grizzly</groupId>
<artifactId>grizzly-http2</artifactId>
<version>2.3.24</version>
</dependency>
<dependency>
<groupId>org.glassfish.grizzly</groupId>
<artifactId>grizzly-npn-bootstrap</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.glassfish.grizzly</groupId>
<artifactId>grizzly-npn-api</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-grizzly2-http</artifactId>
</dependency>
When I test the server with curl -v --http2 ..., I get 当我用curl -v --http2测试服务器时,我明白了
Does someone know what is missing ? 有人知道缺少什么吗?
I found what was the problem. 我发现了什么问题。 It is explained here: http://unrestful.io/2015/10/09/alpn-java.html
这里解释: http : //unrestful.io/2015/10/09/alpn-java.html
Java 8 does not support ALPN. Java 8不支持ALPN。 grizzly-npm-bootstrap is there to override system classes to provide that support.
grizzly-npm-bootstrap用于覆盖系统类以提供该支持。 As such, it should be added to Xbootclasspath like so:
因此,它应该添加到Xbootclasspath,如下所示:
java -Xbootclasspath/p:/path/to/grizzly-npn-bootstrap.jar
And since it overrides system classes, it needs to be adapted to new versions of the JRE. 由于它覆盖了系统类,因此需要适应新版本的JRE。 Since I am using Java 8 and grizzly-npn-bootstrap.jar is only available for OpenJDK 7, I am out of luck.
由于我使用的是Java 8,而且grizzly-npn-bootstrap.jar仅适用于OpenJDK 7,我运气不好。
One option is to switch to Jetty which provides alpn-boot for most (all ?) releases of OpenJDK. 一种选择是切换到Jetty,它为OpenJDK的大多数(所有?)版本提供alpn-boot。
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