This sample demonstrates the usage of secure Http connections with client and server certificates. Http support is described in detail in reference guide

Objectives

In this sample project we want to configure both Http client and server to use secure connections with SSL. First we need a keystore that holds the supported certificates. The sample uses the keystore in src/test/resources/keys/citrus.jks

We need a special Http client configuration:

@Bean
public HttpClient todoClient() {
    return CitrusEndpoints.http()
                        .client()
                        .requestUrl("https://localhost:8443")
                        .requestFactory(sslRequestFactory())
                        .build();
}

The client component references a special request factory and uses the transport scheme https on port 8443. The SSL request factory is defined in a Java Spring configuration class simply because it is way more comfortable to do this in Java than in XML.

@Bean
public HttpClient httpClient() {
    try {
        SSLContext sslcontext = SSLContexts.custom()
                .loadTrustMaterial(new ClassPathResource("keys/citrus.jks").getFile(), "secret".toCharArray(),
                        new TrustSelfSignedStrategy())
                .build();

        SSLConnectionSocketFactory sslSocketFactory = new SSLConnectionSocketFactory(
                sslcontext, NoopHostnameVerifier.INSTANCE);

        return HttpClients.custom()
                .setSSLSocketFactory(sslSocketFactory)
                .setSSLHostnameVerifier(NoopHostnameVerifier.INSTANCE)
                .build();
    } catch (IOException | CertificateException | NoSuchAlgorithmException | KeyStoreException | KeyManagementException e) {
        throw new BeanCreationException("Failed to create http client for ssl connection", e);
    }
}

@Bean
public HttpComponentsClientHttpRequestFactory sslRequestFactory() {
    return new HttpComponentsClientHttpRequestFactory(httpClient());
}

As you can see we load the keystore file keys/citrus.jks in order to setup the http client ssl context. In the Citrus test case you can use the client component as usual for sending messages to the server.

http()
    .client(todoClient)
    .send()
    .get("/todo")
    .accept(ContentType.APPLICATION_XML.getMimeType());
    
http()
    .client(todoClient)
    .receive()
    .response(HttpStatus.OK);

On the server side the configuration looks like follows:

@Bean
public HttpServer todoSslServer() throws Exception {
    return CitrusEndpoints.http()
            .server()
            .port(8080)
            .endpointAdapter(staticEndpointAdapter())
            .connector(sslConnector())
            .autoStart(true)
            .build();
}

@Bean
public ServerConnector sslConnector() {
    ServerConnector connector = new ServerConnector(new Server(),
            new SslConnectionFactory(sslContextFactory(), "http/1.1"),
            new HttpConnectionFactory(httpConfiguration()));
    connector.setPort(securePort);
    return connector;
}

private HttpConfiguration httpConfiguration() {
    HttpConfiguration parent = new HttpConfiguration();
    parent.setSecureScheme("https");
    parent.setSecurePort(securePort);
    HttpConfiguration configuration = new HttpConfiguration(parent);
    configuration.setCustomizers(Collections.singletonList(new SecureRequestCustomizer()));
    return configuration;
}

private SslContextFactory sslContextFactory() {
    SslContextFactory contextFactory = new SslContextFactory();
    contextFactory.setKeyStorePath(sslKeyStorePath);
    contextFactory.setKeyStorePassword("secret");
    return contextFactory;
}

That is a lot of Spring bean configuration, but it works! The server component references a special sslConnector bean that defines the certificates and on the secure port 8443. Client now have to use the certificate in order to connect.

The server component has a static endpoint adapter always sending back a Http 200 Ok response when clients connect.

@Bean
public StaticEndpointAdapter staticEndpointAdapter() {
    return new StaticEndpointAdapter() {
        @Override
        protected Message handleMessageInternal(Message message) {
            return new HttpMessage("<todo xmlns=\"http://citrusframework.org/samples/todolist\">" +
                        "<id>100</id>" +
                        "<title>todoName</title>" +
                        "<description>todoDescription</description>" +
                    "</todo>")
                    .status(HttpStatus.OK);
        }
    };
}

Run

The sample application uses Maven as build tool. So you can compile, package and test the sample with Maven.

mvn clean install -Dembedded=true

This executes the complete Maven build lifecycle.

During the build you will see Citrus performing some integration tests.

Citrus test

Execute all Citrus tests by calling

mvn integration-test

You can also pick a single test by calling

mvn integration-test -Ptest=TodoListIT

You should see Citrus performing several tests with lots of debugging output in your terminal. And of course green tests at the very end of the build.

Of course you can also start the Citrus tests from your favorite IDE. Just start the Citrus test using the TestNG IDE integration in IntelliJ, Eclipse or Netbeans.