Dropwizard HTTP/2 client

Dropwizard Integration with the Jetty HTTP/1.1 and HTTP/2 client

• Provides the ability to configure the client from a Dropwizard config.
• Instruments the client and register the metrics in the Dropwizard's MetricsRegistry
• The client is managed by the Dropwizard's environment and correctly cleans resources.

Example of the usage:

h2Client:
  connectionTimeout: 1s
  idleTimeout: 2s

private Http2ClientConfiguration h2Client;

@JsonProperty
public Http2ClientConfiguration getH2Client() {
    return h2Client;
}

@JsonProperty
public void setH2Client(Http2ClientConfiguration h2Client) {
    this.h2Client = h2Client;
}

HttpClient httpClient = new Http2ClientBuilder(environment)
                .using(configuration.getH2Client())
                .build("dropwizard-http2-golang");
// Call `httpClient.start()` if you want to use it before the server starts up.                

Runtime dependencies

Don't forget to add an alpn-boot library to JVM’s bootpath:

-Xbootclasspath/p:/${user.home}/.m2/repository/org/mortbay/jetty/alpn/alpn-boot/${alpn-boot.version}/alpn-boot-${alpn-boot.version}.jar

The correct library version depends on a JVM version. Consult the Jetty ALPN guide for the reference.

Examples of configurations

• HTTP/2

connectionTimeout: 1s
idleTimeout: 5m
connectionFactory:
  type : h2
  keyStorePath:       client.jks
  keyStorePassword:   http2_client
  trustStorePath:     servers.jks
  trustStorePassword: http2_server
  supportedProtocols:
    - 'TLSv1.2'
  supportedCipherSuites:
    - 'TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256'

• HTTP/2 Clear Text

connectionTimeout: 600ms
idleTimeout: 3m
connectionFactory:
  type : h2c

Maven dependency

<dependency>
    <groupId>com.github.arteam</groupId>
    <artifactId>dropwizard-http2-client</artifactId>
    <version>0.4</version>
</dependency>