/
WebSocketServer.java
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/
WebSocketServer.java
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//
// ========================================================================
// Copyright (c) 1995-2020 Mort Bay Consulting Pty Ltd and others.
//
// This program and the accompanying materials are made available under
// the terms of the Eclipse Public License 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0
//
// This Source Code may also be made available under the following
// Secondary Licenses when the conditions for such availability set
// forth in the Eclipse Public License, v. 2.0 are satisfied:
// the Apache License v2.0 which is available at
// https://www.apache.org/licenses/LICENSE-2.0
//
// SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
// ========================================================================
//
package org.eclipse.jetty.embedded;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.websocket.api.Session;
import org.eclipse.jetty.websocket.api.WriteCallback;
import org.eclipse.jetty.websocket.api.annotations.OnWebSocketMessage;
import org.eclipse.jetty.websocket.api.annotations.WebSocket;
import org.eclipse.jetty.websocket.server.JettyWebSocketServlet;
import org.eclipse.jetty.websocket.server.JettyWebSocketServletFactory;
import org.eclipse.jetty.websocket.server.config.JettyWebSocketServletContainerInitializer;
/**
* Example of setting up a Jetty WebSocket server
* <p>
* Note: this uses the Jetty WebSocket API, not the jakarta.websocket API.
*/
public class WebSocketServer
{
/**
* Example of a Jetty API WebSocket Echo Socket
*/
@WebSocket
public static class EchoSocket
{
@OnWebSocketMessage
public void onMessage(Session session, String message)
{
session.getRemote().sendString(message, WriteCallback.NOOP);
}
}
/**
* Servlet layer
*/
@SuppressWarnings("serial")
public static class EchoServlet extends JettyWebSocketServlet
{
@Override
public void configure(JettyWebSocketServletFactory factory)
{
factory.addMapping("/", (req, res) -> new EchoSocket());
}
}
public static Server createServer(int port)
{
Server server = new Server(port);
ServletContextHandler context = new ServletContextHandler();
context.setContextPath("/");
server.setHandler(context);
// Add the echo socket servlet to the /echo path map
context.addServlet(EchoServlet.class, "/echo");
// Configure context to support WebSocket
JettyWebSocketServletContainerInitializer.configure(context, null);
return server;
}
public static void main(String[] args) throws Exception
{
int port = ExampleUtil.getPort(args, "jetty.http.port", 8080);
Server server = createServer(port);
server.start();
server.join();
}
}