From 782a1441c1bc33045b341c77e1a2394052bd16e8 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Tue, 8 Dec 2015 10:18:26 +1300
Subject: Add basic websocket servlet to the server

---
 pom.xml                                     |  5 +++++
 src/org/traccar/api/AsyncSocket.java        | 30 ++++++++++++++++++++++++++++
 src/org/traccar/api/AsyncSocketServlet.java | 31 +++++++++++++++++++++++++++++
 src/org/traccar/web/WebServer.java          |  2 ++
 4 files changed, 68 insertions(+)
 create mode 100644 src/org/traccar/api/AsyncSocket.java
 create mode 100644 src/org/traccar/api/AsyncSocketServlet.java

diff --git a/pom.xml b/pom.xml
index 6d45132e8..3c11979c6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -92,6 +92,11 @@
             <artifactId>jetty-jndi</artifactId>
             <version>${jetty.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.eclipse.jetty.websocket</groupId>
+            <artifactId>websocket-server</artifactId>
+            <version>${jetty.version}</version>
+        </dependency>
         <dependency>
             <groupId>org.glassfish.jersey.containers</groupId>
             <artifactId>jersey-container-servlet</artifactId>
diff --git a/src/org/traccar/api/AsyncSocket.java b/src/org/traccar/api/AsyncSocket.java
new file mode 100644
index 000000000..ea28fb283
--- /dev/null
+++ b/src/org/traccar/api/AsyncSocket.java
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * 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 org.traccar.api;
+
+import org.eclipse.jetty.websocket.api.Session;
+import org.eclipse.jetty.websocket.api.annotations.OnWebSocketMessage;
+import org.eclipse.jetty.websocket.api.annotations.WebSocket;
+
+@WebSocket
+public class AsyncSocket {
+
+    @OnWebSocketMessage
+    public void onWebSocketText(Session session, String message) {
+        session.getRemote().sendString(message, null); // TODO: actual implementation
+    }
+
+}
diff --git a/src/org/traccar/api/AsyncSocketServlet.java b/src/org/traccar/api/AsyncSocketServlet.java
new file mode 100644
index 000000000..3b02bcfcd
--- /dev/null
+++ b/src/org/traccar/api/AsyncSocketServlet.java
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * 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 org.traccar.api;
+
+import org.eclipse.jetty.websocket.servlet.WebSocketServlet;
+import org.eclipse.jetty.websocket.servlet.WebSocketServletFactory;
+
+public class AsyncSocketServlet extends WebSocketServlet {
+
+    private static final long ASYNC_TIMEOUT = 60000;
+
+    @Override
+    public void configure(WebSocketServletFactory factory) {
+        factory.getPolicy().setIdleTimeout(ASYNC_TIMEOUT);
+        factory.register(AsyncSocket.class);
+    }
+
+}
diff --git a/src/org/traccar/web/WebServer.java b/src/org/traccar/web/WebServer.java
index e7c0057e4..cd01d04b4 100644
--- a/src/org/traccar/web/WebServer.java
+++ b/src/org/traccar/web/WebServer.java
@@ -33,6 +33,7 @@ import org.eclipse.jetty.webapp.WebAppContext;
 import org.glassfish.jersey.server.ResourceConfig;
 import org.glassfish.jersey.servlet.ServletContainer;
 import org.traccar.Config;
+import org.traccar.api.AsyncSocketServlet;
 import org.traccar.api.CorsResponseFilter;
 import org.traccar.api.ResourceErrorHandler;
 import org.traccar.api.SecurityRequestFilter;
@@ -133,6 +134,7 @@ public class WebServer {
                     PermissionResource.class, DeviceResource.class, UserResource.class, PositionResource.class);
             servletHandler.addServlet(new ServletHolder(new ServletContainer(resourceConfig)), "/rest/*");
         }
+        servletHandler.addServlet(new ServletHolder(new AsyncSocketServlet()), "/socket");
         servletHandler.addServlet(new ServletHolder(new AsyncServlet()), "/async/*");
         servletHandler.addServlet(new ServletHolder(new ServerServlet()), "/server/*");
         servletHandler.addServlet(new ServletHolder(new UserServlet()), "/user/*");
-- 
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