io.reactivex.netty.examples.tcp.echo.TcpEchoServer 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.tcp.echo;
import io.reactivex.netty.RxNetty;
import io.reactivex.netty.channel.ConnectionHandler;
import io.reactivex.netty.channel.ObservableConnection;
import io.reactivex.netty.pipeline.PipelineConfigurators;
import io.reactivex.netty.server.RxServer;
import rx.Observable;
import rx.functions.Func1;
/**
* @author Nitesh Kant
*/
public final class TcpEchoServer {
static final int DEFAULT_PORT = 8099;
private final int port;
public TcpEchoServer(int port) {
this.port = port;
}
public RxServer createServer() {
RxServer server = RxNetty.createTcpServer(port, PipelineConfigurators.textOnlyConfigurator(),
new ConnectionHandler() {
@Override
public Observable handle(
final ObservableConnection connection) {
System.out.println("New client connection established.");
connection.writeAndFlush("Welcome! \n\n");
return connection.getInput().flatMap(new Func1>() {
@Override
public Observable call(String msg) {
System.out.println("onNext: " + msg);
msg = msg.trim();
if (!msg.isEmpty()) {
return connection.writeAndFlush("echo => " + msg + '\n');
} else {
return Observable.empty();
}
}
});
}
});
System.out.println("TCP echo server started...");
return server;
}
public static void main(final String[] args) {
new TcpEchoServer(DEFAULT_PORT).createServer().startAndWait();
}
}