osd-contiki/tools/collect-view/src/se/sics/contiki/collect/TCPClientConnection.java

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/*
* Copyright (c) 2012, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* -----------------------------------------------------------------
*
* TCPClientConnection
*
* Authors : Niclas Finne
*/
package se.sics.contiki.collect;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.net.Socket;
/**
*
*/
public class TCPClientConnection extends SerialConnection {
private final String host;
private final int port;
private Socket client;
private BufferedReader in;
private PrintStream out;
public TCPClientConnection(SerialConnectionListener listener, String host, int port) {
super(listener);
this.host = host;
this.port = port;
}
@Override
public String getConnectionName() {
return "<tcp://" + host + ':' + port + '>';
}
@Override
public void open(String comPort) {
close();
this.comPort = comPort == null ? "" : comPort;
isClosed = false;
try {
client = new Socket(host, port);
in = new BufferedReader(new InputStreamReader(client.getInputStream()));
out = new PrintStream(client.getOutputStream());
System.out.println("Opened TCP connection to " + host + ':' + port);
/* Start thread listening on UDP */
Thread readInput = new Thread(new Runnable() {
public void run() {
try {
String line;
while (isOpen && (line = in.readLine()) != null) {
serialData(line);
}
} catch (IOException e) {
lastError = "Error when reading from SerialConnection TCP: " + e;
System.err.println(lastError);
if (!isClosed) {
e.printStackTrace();
closeConnection();
}
} finally {
System.out.println("SerialConnection TCP terminated.");
closeConnection();
}
}
}, "TCP thread");
isOpen = true;
serialOpened();
readInput.start();
} catch (Exception e) {
lastError = "Failed to open TCP connection to " + host + ':' + port + ": " + e;
System.err.println(lastError);
e.printStackTrace();
closeConnection();
}
}
@Override
protected void doClose() {
try {
if (in != null) {
in.close();
in = null;
}
if (out != null) {
out.close();
out = null;
}
if (client != null) {
client.close();
client = null;
}
} catch (IOException e) {
e.printStackTrace();
}
}
}