Initial release

src/org/traccar/client/Connection.java

@@ -0,0 +1,153 @@
+/*
+ * Copyright 2012 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.client;
+
+import java.io.*;
+import java.net.*;
+import java.util.*;
+import android.os.Handler;
+import 	android.content.Intent;
+import android.content.Context;
+
+/**
+ * Connection with autoreconnect
+ */
+public class Connection {
+
+    private String address;
+    private int port;
+    
+    private String connectMessage;
+	
+    private Socket socket;
+    private OutputStream socketStream;
+
+    private String status;
+
+    private Context context;
+
+    /**
+     * Initialize connection parameters
+     */
+    public Connection(String address, int port, String message) {
+    	this.address = address;
+    	this.port = port;
+    	connectMessage = message;
+    	setStatus(Traccar.STATUS_DISCONNECTED);
+    }
+    
+    /**
+     * Get address
+     */
+    public String getAddress() {
+    	return address;
+    }
+    
+    /**
+     * Get port
+     */
+    public int getPort() {
+    	return port;
+    }
+
+    /**
+     * Set context
+     */
+    public void setContext(Context context) {
+    	this.context = context;
+    }
+    
+    /**
+     * Set connection status
+     */
+    private void setStatus(String status) {
+    	if (!status.equals(this.status)) {
+	    	this.status = status;
+	    	if (context != null) {
+	    		Intent intent = new Intent(Traccar.MSG_CONNECTION_STATUS);
+	    		intent.putExtra(Traccar.EXTRA_STATUS, status);
+	    		context.sendBroadcast(intent);
+	    	}
+    	}
+    }
+    
+    /**
+     * Get connection status
+     */
+    public String getStatus() {
+    	return status;
+    }
+    
+    /**
+     * Establish connection
+     */
+    public void connect() {
+        try {
+            socket = new Socket(address, port);
+            socket.setSoTimeout(Traccar.SOCKET_TIMEOUT);
+            socketStream = socket.getOutputStream();
+            setStatus(Traccar.STATUS_CONNECTED);
+            send(connectMessage);
+        } catch (Exception e) {
+            reconnect();
+        }
+    }
+    
+    /**
+     * Send message
+     */
+    public void send(String message) {
+        try {
+            if (socketStream != null) {
+                socketStream.write(message.getBytes());
+                socketStream.flush();
+            }
+        } catch (Exception e) {
+            reconnect();
+        }
+    }
+
+    /**
+     * Close connection
+     */
+    public void close() {
+    	handler.removeCallbacks(task);
+        if (socket != null) {
+            try {
+                socket.close();
+            } catch (Exception e) {
+            }
+            socket = null;
+        }
+        socketStream = null;
+        setStatus(Traccar.STATUS_DISCONNECTED);
+    }
+
+    private void reconnect() {
+    	close();
+        handler.postDelayed(task, Traccar.RECONNECT_DELAY);
+    }
+    
+    private Handler handler = new Handler();
+    private ReconnectTask task = new ReconnectTask();
+
+    class ReconnectTask implements Runnable {
+        @Override
+        public void run() {
+            connect();
+        }
+    }
+}