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.rotel.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.io.InterruptedIOException;
20 import java.net.Socket;
21 import java.net.SocketTimeoutException;
23 import org.eclipse.jdt.annotation.NonNullByDefault;
24 import org.eclipse.jdt.annotation.Nullable;
25 import org.openhab.binding.rotel.internal.RotelException;
26 import org.openhab.binding.rotel.internal.protocol.RotelAbstractProtocolHandler;
27 import org.slf4j.Logger;
28 import org.slf4j.LoggerFactory;
31 * Class for communicating with the Rotel device through an IP connection or a serial over IP connection
33 * @author Laurent Garnier - Initial contribution
36 public class RotelIpConnector extends RotelConnector {
38 private final Logger logger = LoggerFactory.getLogger(RotelIpConnector.class);
40 private String address;
43 private @Nullable Socket clientSocket;
48 * @param address the IP address of the projector
49 * @param port the TCP port to be used
50 * @param protocolHandler the protocol handler
51 * @param readerThreadName the name of thread to be created
53 public RotelIpConnector(String address, Integer port, RotelAbstractProtocolHandler protocolHandler,
54 String readerThreadName) {
55 super(protocolHandler, false, readerThreadName);
57 this.address = address;
62 public synchronized void open() throws RotelException {
63 logger.debug("Opening IP connection on IP {} port {}", this.address, this.port);
65 Socket clientSocket = new Socket(this.address, this.port);
66 clientSocket.setSoTimeout(100);
68 dataOut = new DataOutputStream(clientSocket.getOutputStream());
69 dataIn = new DataInputStream(clientSocket.getInputStream());
73 this.clientSocket = clientSocket;
77 logger.debug("IP connection opened");
78 } catch (IOException | SecurityException | IllegalArgumentException e) {
80 throw new RotelException("Opening IP connection failed", e);
85 public synchronized void close() {
86 logger.debug("Closing IP connection");
88 Socket clientSocket = this.clientSocket;
89 if (clientSocket != null) {
92 } catch (IOException e) {
94 this.clientSocket = null;
97 logger.debug("IP connection closed");
101 * Reads some number of bytes from the input stream and stores them into the buffer array b. The number of bytes
102 * actually read is returned as an integer.
103 * In case of socket timeout, the returned value is 0.
105 * @param dataBuffer the buffer into which the data is read.
107 * @return the total number of bytes read into the buffer, or -1 if there is no more data because the end of the
108 * stream has been reached.
110 * @throws RotelException - If the input stream is null, if the first byte cannot be read for any reason
111 * other than the end of the file, if the input stream has been closed, or if some other I/O error
113 * @throws InterruptedIOException - if the thread was interrupted during the reading of the input stream
116 protected int readInput(byte[] dataBuffer) throws RotelException, InterruptedIOException {
117 InputStream dataIn = this.dataIn;
118 if (dataIn == null) {
119 throw new RotelException("readInput failed: input stream is null");
122 return dataIn.read(dataBuffer);
123 } catch (SocketTimeoutException e) {
125 } catch (IOException e) {
126 logger.debug("readInput failed: {}", e.getMessage());
127 throw new RotelException("readInput failed", e);