package com.intelligt.modbus.jlibmodbus.net;
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import com.intelligt.modbus.jlibmodbus.Modbus;
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import com.intelligt.modbus.jlibmodbus.exception.ModbusIOException;
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import com.intelligt.modbus.jlibmodbus.net.stream.base.LoggingInputStream;
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import com.intelligt.modbus.jlibmodbus.net.stream.base.LoggingOutputStream;
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import com.intelligt.modbus.jlibmodbus.net.transport.ModbusTransport;
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import com.intelligt.modbus.jlibmodbus.net.transport.ModbusTransportFactory;
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import com.intelligt.modbus.jlibmodbus.tcp.TcpParameters;
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import java.io.IOException;
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import java.net.InetSocketAddress;
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import java.net.Socket;
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/*
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* Copyright (C) 2016 "Invertor" Factory", JSC
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* [http://www.sbp-invertor.ru]
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*
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* This file is part of JLibModbus.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Authors: Vladislav Y. Kochedykov, software engineer.
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* email: vladislav.kochedykov@gmail.com
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*/
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class ModbusMasterConnectionTCP extends ModbusConnection {
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final private TcpParameters parameters;
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private ModbusTransport transport = null;
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ModbusMasterConnectionTCP(TcpParameters parameters) {
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this.parameters = parameters;
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}
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@Override
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public LoggingOutputStream getOutputStream() {
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return transport.getOutputStream();
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}
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@Override
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public LoggingInputStream getInputStream() {
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return transport.getInputStream();
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}
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@Override
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public ModbusTransport getTransport() {
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return transport;
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}
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@Override
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protected void openImpl() throws ModbusIOException {
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if (!isOpened()) {
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if (parameters != null) {
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InetSocketAddress isa = new InetSocketAddress(parameters.getHost(), parameters.getPort());
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Socket socket = new Socket();
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try {
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socket.connect(isa, parameters.getConnectionTimeout());
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socket.setKeepAlive(parameters.isKeepAlive());
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transport = ModbusTransportFactory.createTCP(socket);
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setReadTimeout(getReadTimeout());
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} catch (Exception e) {
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try {
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socket.close();
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} catch (IOException e1) {
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// ignored
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}
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throw new ModbusIOException(e);
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}
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} else {
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throw new ModbusIOException("TCP parameters is null");
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}
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}
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}
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@Override
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protected void closeImpl() throws ModbusIOException {
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try {
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if (transport != null) {
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transport.close();
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}
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} catch (IOException e) {
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throw new ModbusIOException(e);
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} finally {
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transport = null;
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}
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}
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}
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