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    <p>Starting with Jetty 9, you can use the <a href="http://download.eclipse.org/jetty/stable-9/apidocs/org/eclipse/jetty/websocket/servlet/WebSocketCreator.html" rel="nofollow">WebSocketCreator</a> concepts to achieve this behavior.</p> <pre class="lang-java prettyprint-override"><code>package org.eclipse.jetty.websocket.server.examples; import java.io.IOException; import org.eclipse.jetty.websocket.api.UpgradeRequest; import org.eclipse.jetty.websocket.api.UpgradeResponse; import org.eclipse.jetty.websocket.server.examples.echo.BigEchoSocket; import org.eclipse.jetty.websocket.servlet.WebSocketCreator; import org.eclipse.jetty.websocket.servlet.WebSocketServlet; import org.eclipse.jetty.websocket.servlet.WebSocketServletFactory; @SuppressWarnings("serial") public class MyCustomCreationServlet extends WebSocketServlet { public static class MyCustomCreator implements WebSocketCreator { @Override public Object createWebSocket(UpgradeRequest req, UpgradeResponse resp) { String query = req.getQueryString(); // Start looking at the UpgradeRequest to determine what you want to do if ((query == null) || (query.length() &lt;= 0)) { try { // Let UPGRADE request for websocket fail with // status code 403 (FORBIDDEN) [per RFC-6455] resp.sendForbidden("Unspecified query"); } catch (IOException e) { // An input or output exception occurs e.printStackTrace(); } // No UPGRADE return null; } // Create the websocket we want to if (query.contains("bigecho")) { return new BigEchoSocket(); } else if (query.contains("echo")) { return new MyEchoSocket(); } // Let UPGRADE fail with 503 (UNAVAILABLE) return null; } } @Override public void configure(WebSocketServletFactory factory) { factory.setCreator(new MyCustomCreator()); } } </code></pre>
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