2 * Copyright (c) 2010-2023 Contributors to the openHAB project
4 * See the NOTICE file(s) distributed with this work for additional
7 * This program and the accompanying materials are made available under the
8 * terms of the Eclipse Public License 2.0 which is available at
9 * http://www.eclipse.org/legal/epl-2.0
11 * SPDX-License-Identifier: EPL-2.0
13 package org.openhab.binding.nuvo.internal.communication;
15 import java.io.DataInputStream;
16 import java.io.DataOutputStream;
17 import java.io.IOException;
18 import java.io.InputStream;
19 import java.net.Socket;
20 import java.net.SocketTimeoutException;
22 import org.eclipse.jdt.annotation.NonNullByDefault;
23 import org.eclipse.jdt.annotation.Nullable;
24 import org.openhab.binding.nuvo.internal.NuvoException;
25 import org.slf4j.Logger;
26 import org.slf4j.LoggerFactory;
29 * Class for communicating with the Nuvo device through a serial over IP connection
31 * @author Laurent Garnier - Initial contribution
32 * @author Michael Lobstein - Adapted for the Nuvo binding
35 public class NuvoIpConnector extends NuvoConnector {
37 private final Logger logger = LoggerFactory.getLogger(NuvoIpConnector.class);
39 private @Nullable final String address;
40 private final int port;
41 private final String uid;
43 private @Nullable Socket clientSocket;
48 * @param address the IP address of the serial over ip adapter
49 * @param port the TCP port to be used
50 * @param uid the thing uid string
52 public NuvoIpConnector(@Nullable String address, int port, String uid) {
53 this.address = address;
59 public synchronized void open() throws NuvoException {
60 logger.debug("Opening IP connection on IP {} port {}", this.address, this.port);
62 Socket clientSocket = new Socket(this.address, this.port);
63 clientSocket.setSoTimeout(100);
65 dataOut = new DataOutputStream(clientSocket.getOutputStream());
66 dataIn = new DataInputStream(clientSocket.getInputStream());
68 Thread thread = new NuvoReaderThread(this, this.uid, this.address + "." + this.port);
69 setReaderThread(thread);
72 this.clientSocket = clientSocket;
76 logger.debug("IP connection opened");
77 } catch (IOException | SecurityException | IllegalArgumentException e) {
79 throw new NuvoException("Opening IP connection failed: " + e.getMessage(), e);
84 public synchronized void close() {
85 logger.debug("Closing IP connection");
87 Socket clientSocket = this.clientSocket;
88 if (clientSocket != null) {
91 } catch (IOException e) {
93 this.clientSocket = null;
96 logger.debug("IP connection closed");
100 * Reads some number of bytes from the input stream and stores them into the buffer array b. The number of bytes
101 * actually read is returned as an integer.
102 * In case of socket timeout, the returned value is 0.
104 * @param dataBuffer the buffer into which the data is read.
106 * @return the total number of bytes read into the buffer, or -1 if there is no more data because the end of the
107 * stream has been reached.
109 * @throws NuvoException - If the input stream is null, if the first byte cannot be read for any reason
110 * other than the end of the file, if the input stream has been closed, or if some other I/O error
114 protected int readInput(byte[] dataBuffer) throws NuvoException {
115 InputStream dataIn = this.dataIn;
116 if (dataIn == null) {
117 throw new NuvoException("readInput failed: input stream is null");
120 return dataIn.read(dataBuffer);
121 } catch (SocketTimeoutException e) {
123 } catch (IOException e) {
124 throw new NuvoException("readInput failed: " + e.getMessage(), e);