package com.intelligt.modbus.jlibmodbus.slave;
|
|
import com.intelligt.modbus.jlibmodbus.Modbus;
|
import com.intelligt.modbus.jlibmodbus.data.DataHolder;
|
import com.intelligt.modbus.jlibmodbus.exception.ModbusIOException;
|
import com.intelligt.modbus.jlibmodbus.exception.ModbusNumberException;
|
import com.intelligt.modbus.jlibmodbus.msg.base.ModbusMessage;
|
import com.intelligt.modbus.jlibmodbus.msg.base.ModbusRequest;
|
import com.intelligt.modbus.jlibmodbus.net.ModbusConnectionFactory;
|
import com.intelligt.modbus.jlibmodbus.net.transport.ModbusTransport;
|
|
import java.io.IOException;
|
import java.net.Socket;
|
|
/*
|
* Copyright (C) 2016 "Invertor" Factory", JSC
|
* [http://www.sbp-invertor.ru]
|
*
|
* This file is part of JLibModbus.
|
*
|
* 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.
|
*
|
* Authors: Vladislav Y. Kochedykov, software engineer.
|
* email: vladislav.kochedykov@gmail.com
|
*/
|
class RequestHandlerTCP extends RequestHandler {
|
|
final private Socket socket;
|
|
RequestHandlerTCP(ModbusSlaveTCP slave, Socket s) throws ModbusIOException {
|
super(slave, ModbusConnectionFactory.getTcpSlave(s));
|
socket = s;
|
}
|
|
@Override
|
public void run() {
|
setListening(true);
|
try {
|
getSlave().connectionOpened(getConnection());
|
do {
|
try {
|
DataHolder dataHolder = getSlave().getDataHolder();
|
ModbusTransport transport = getConnection().getTransport();
|
ModbusRequest request = (ModbusRequest) transport.readRequest();
|
|
if (/*default tcp session*/request.getServerAddress() == Modbus.TCP_DEFAULT_ID ||
|
/*gateway*/request.getServerAddress() == getSlave().getServerAddress()) {
|
ModbusMessage response = request.process(dataHolder);
|
response.setTransactionId(request.getTransactionId());
|
if (request.getServerAddress() != Modbus.BROADCAST_ID)
|
transport.send(response);
|
} else if (/*broadcast*/ request.getServerAddress() == Modbus.BROADCAST_ID && getSlave().isBroadcastEnabled()) {
|
//we do not answer broadcast requests
|
request.process(dataHolder);
|
}
|
} catch (ModbusNumberException e) {
|
Modbus.log().warning(e.getLocalizedMessage());
|
}
|
} while (isListening());
|
} catch (ModbusIOException e) {
|
if (getSlave().isListening()) {
|
Modbus.log().warning(e.getLocalizedMessage());
|
}
|
} finally {
|
setListening(false);
|
try {
|
if (getConnection().isOpened()) {
|
getConnection().close();
|
getSlave().connectionClosed(getConnection());
|
}
|
} catch (ModbusIOException ioe) {
|
Modbus.log().warning(ioe.getMessage());
|
}
|
}
|
}
|
|
@Override
|
public void closeConnection() {
|
try {
|
if (socket.isConnected() && !isListening()) {
|
socket.close();
|
setListening(false);
|
}
|
} catch (IOException e) {
|
e.printStackTrace();
|
}
|
}
|
}
|