HTTP Helloworld

HelloWorldStreamingClient.java

/*
 * Copyright © 2018 Apple Inc. and the ServiceTalk project authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.servicetalk.examples.http.helloworld.async.streaming;

import io.servicetalk.http.api.StreamingHttpClient;
import io.servicetalk.http.api.StreamingHttpResponse;
import io.servicetalk.http.netty.HttpClients;

import java.nio.charset.Charset;
import java.time.Duration;

import static io.servicetalk.http.api.HttpSerializers.appSerializerUtf8FixLen;

public final class HelloWorldStreamingClient {
    public static void main(String[] args) throws Exception {
        try (StreamingHttpClient client = HttpClients.forSingleAddress("localhost", 8082).buildStreaming()) {
            client.request(client.get("/sayHello")
                            .payloadBody(client.executionContext().executor()
                                    .timer(Duration.ofSeconds(1))
                                    .repeat(__ -> true)
                                    .map(__ -> client.executionContext().bufferAllocator().fromAscii("foo"))
                                    .whenOnNext(buffer -> System.out.println("Sending buffer: " + buffer.toString(Charset.defaultCharset())))))
                    .beforeOnSuccess(response -> System.out.println(response.toString((name, value) -> value)))
                    .flatMapPublisher(StreamingHttpResponse::payloadBody)
                    .ignoreElements()
                    .retry((i, throwable) -> {
                        System.out.println("Retrying ..");
                        return true;
                    })
                    .toFuture().get();
        }
    }
}

HelloWorldStreamingServer.java

/*
 * Copyright © 2018 Apple Inc. and the ServiceTalk project authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.servicetalk.examples.http.helloworld.async.streaming;

import io.servicetalk.http.netty.HttpServers;

import java.nio.charset.Charset;

import static io.servicetalk.concurrent.api.Publisher.from;
import static io.servicetalk.concurrent.api.Single.succeeded;
import static io.servicetalk.http.api.HttpSerializers.appSerializerUtf8FixLen;

public final class HelloWorldStreamingServer {
    public static void main(String[] args) throws Exception {
        HttpServers.forPort(8082)
                .listenStreamingAndAwait((ctx, request, responseFactory) ->
                        succeeded(responseFactory.ok()
                                .payloadBody(request.payloadBody()
                                        .whenOnNext(buffer -> System.out.println("Received buffer: " + buffer.toString(Charset.defaultCharset()))))))
                .awaitShutdown();
    }
}