io.undertow.examples.websockets_extension.WebSocketServer Maven / Gradle / Ivy
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package io.undertow.examples.websockets_extension;
import io.undertow.Undertow;
import io.undertow.examples.UndertowExample;
import io.undertow.server.handlers.resource.ClassPathResourceManager;
import io.undertow.websockets.WebSocketConnectionCallback;
import io.undertow.websockets.WebSocketProtocolHandshakeHandler;
import io.undertow.websockets.core.AbstractReceiveListener;
import io.undertow.websockets.core.BufferedTextMessage;
import io.undertow.websockets.core.WebSocketChannel;
import io.undertow.websockets.core.WebSockets;
import io.undertow.websockets.extensions.PerMessageDeflateHandshake;
import io.undertow.websockets.spi.WebSocketHttpExchange;
import static io.undertow.Handlers.path;
import static io.undertow.Handlers.resource;
/**
* @author Stuart Douglas
*/
@UndertowExample("Web Socket Extensions")
public class WebSocketServer {
public static void main(final String[] args) {
// Demonstrates how to use Websocket Protocol Handshake to enable Per-message deflate
Undertow server = Undertow.builder()
.addHttpListener(8080, "localhost")
.setHandler(path()
.addPrefixPath("/myapp",
new WebSocketProtocolHandshakeHandler(new WebSocketConnectionCallback() {
@Override
public void onConnect(WebSocketHttpExchange exchange, WebSocketChannel channel) {
channel.getReceiveSetter().set(new AbstractReceiveListener() {
@Override
protected void onFullTextMessage(WebSocketChannel channel, BufferedTextMessage message) {
WebSockets.sendText(message.getData(), channel, null);
}
});
channel.resumeReceives();
}
}).addExtension(new PerMessageDeflateHandshake(false, 6)))
.addPrefixPath("/", resource(new ClassPathResourceManager(WebSocketServer.class.getClassLoader(), WebSocketServer.class.getPackage())).addWelcomeFiles("index.html")))
.build();
server.start();
}
}