io.reactivex.netty.examples.http.plaintext.PlainTextServer Maven / Gradle / Ivy
/*
* Copyright 2014 Netflix, Inc.
*
* 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.reactivex.netty.examples.http.plaintext;
import io.netty.buffer.ByteBuf;
import io.netty.handler.codec.http.HttpHeaders;
import io.reactivex.netty.RxNetty;
import io.reactivex.netty.protocol.http.server.HttpServer;
import io.reactivex.netty.protocol.http.server.HttpServerRequest;
import io.reactivex.netty.protocol.http.server.HttpServerResponse;
import io.reactivex.netty.protocol.http.server.RequestHandler;
import rx.Observable;
/**
* @author Nitesh Kant
*/
public final class PlainTextServer {
static final int DEFAULT_PORT = 8111;
public static final String WELCOME_MSG = "Welcome!!";
private static final byte[] WELCOME_MSG_BYTES = WELCOME_MSG.getBytes();
private static final String CONTENT_LENGTH_HEADER_VAL = String.valueOf(WELCOME_MSG_BYTES.length); // Does not use int as this omits conversion to string for every response.
private final int port;
public PlainTextServer(int port) {
this.port = port;
}
public HttpServer createServer() {
HttpServer server =
RxNetty.createHttpServer(port,
new RequestHandler() {
@Override
public Observable handle(HttpServerRequest request,
final HttpServerResponse response) {
response.flushOnlyOnChannelReadComplete(true); // Leverage gathering writes for HTTP pipelined requests.
response.getHeaders().set(HttpHeaders.Names.CONTENT_LENGTH,
CONTENT_LENGTH_HEADER_VAL); // This makes RxNetty write a single Full response as opposed to writing header, content & lastHttpContent.
ByteBuf content = response.getAllocator()
.buffer(WELCOME_MSG_BYTES.length)
.writeBytes(WELCOME_MSG_BYTES);
response.write(content);
return response.close(
false); // Let RxNetty take care of flushing appropriately. Do NOT use when processing in a different thread.
}
});
return server;
}
public static void main(final String[] args) throws InterruptedException {
HttpServer server = new PlainTextServer(DEFAULT_PORT).createServer();
server.start();
System.out.println("HTTP plain text server started at port: " + server.getServerPort());
server.waitTillShutdown();
}
}