diff -r 000000000000 -r a0f15cb8c730 chat/server/src/main/java/org/apidesign/demo/chat/server/Main.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/chat/server/src/main/java/org/apidesign/demo/chat/server/Main.java	Fri Apr 22 05:56:47 2016 +0200
@@ -0,0 +1,79 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (C) 2013 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package org.apidesign.demo.chat.server;
+
+import java.io.IOException;
+import java.net.Inet4Address;
+import java.net.InterfaceAddress;
+import java.net.NetworkInterface;
+import java.net.URI;
+import java.util.Enumeration;
+import javax.ws.rs.container.ContainerRequestContext;
+import javax.ws.rs.container.ContainerResponseContext;
+import javax.ws.rs.container.ContainerResponseFilter;
+import org.glassfish.grizzly.http.server.HttpServer;
+import org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpServerFactory;
+import org.glassfish.jersey.server.ResourceConfig;
+
+/** Starts REST server based on Jersey.
+ */
+final class Main implements ContainerResponseFilter {
+    public static void main(String... args) throws Exception {
+        ResourceConfig rc = new ResourceConfig(
+            ChatServerResource.class, Main.class
+        );
+        URI u = new URI("http://0.0.0.0:8080/");
+        HttpServer server = GrizzlyHttpServerFactory.createHttpServer(u, rc);
+        System.err.println("Server running on following IP addresses:");
+        dumpIPs();
+        System.err.println("Press Enter to shutdown the server");
+        System.in.read();
+        server.stop();
+    }
+
+    @Override
+    public void filter(
+        ContainerRequestContext requestContext, 
+        ContainerResponseContext r
+    ) throws IOException {
+        r.getHeaders().add("Access-Control-Allow-Origin", "*");
+        r.getHeaders().add("Access-Control-Allow-Credentials", "true");
+        r.getHeaders().add("Access-Control-Allow-Headers", "Content-Type");
+        r.getHeaders().add("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT");
+    }    
+    
+    private static void dumpIPs() throws Exception {
+        Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();
+        while (en.hasMoreElements()) {
+            NetworkInterface n = en.nextElement();
+            if (n.isUp()) {
+                for (InterfaceAddress i : n.getInterfaceAddresses()) {
+                    if (i.getAddress() instanceof Inet4Address) {
+                        System.err.println(n.getName() + ": " + i.getAddress());
+                    }
+                }
+            }
+        }
+    }
+}