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/*
* Copyright (c) 1996-2001
* Logica Mobile Networks Limited
* All rights reserved.
*
* This software is distributed under Logica Open Source License Version 1.0
* ("Licence Agreement"). You shall use it and distribute only in accordance
* with the terms of the License Agreement.
*
*/
package org.smpp.smscsim;
import java.io.IOException;
import org.smpp.Connection;
import org.smpp.Data;
import org.smpp.Receiver;
import org.smpp.SmppObject;
import org.smpp.Transmitter;
import org.smpp.pdu.*;
/**
* This class represent one client connection to the server starting
* by accepting the connection, authenticating of the client,
* communication and finished by unbinding.
* The SMSCSession object is generated by SMSCListener
* which also sets the session's PDU processor. Session is run in separate
* thread; it reads PDUs from the connection and calls PDU processor's
* client methods to process the received PDUs. PDU processor on turn can
* use the session to submit PDUs to the client.
* For receiving and sending of PDUs the session uses instances of
* Receiver and Transmitter.
*
* @author Logica Mobile Networks SMPP Open Source Team
* @version $Revision: 1.2 $
* @see SMSCListener
* @see PDUProcessor
* @see Connection
* @see Receiver
* @see Transmitter
*/
public class SMSCSessionImpl extends SmppObject implements SMSCSession {
private Receiver receiver;
private Transmitter transmitter;
private PDUProcessor pduProcessor;
private Connection connection;
private long receiveTimeout = Data.RECEIVER_TIMEOUT;
private boolean keepReceiving = true;
private boolean isReceiving = false;
private int timeoutCntr = 0;
/**
* Initialises the session with the connection the session
* should communicate over.
* @param connection the connection object for communication with client
*/
public SMSCSessionImpl(Connection connection) {
this.connection = connection;
transmitter = new Transmitter(connection);
receiver = new Receiver(transmitter, connection);
}
/**
* Signals the session's thread that it should stop.
* Doesn't wait for the thread to be completly finished.
* Note that it can take some time before the thread is completly
* stopped.
* @see #run()
*/
public void stop() {
debug.write("SMSCSession stopping");
keepReceiving = false;
}
/**
* Implements the logic of receiving of the PDUs from client and passing
* them to PDU processor. First starts receiver, then in cycle
* receives PDUs and passes them to the proper PDU processor's
* methods. After the function stop is called (externally)
* stops the receiver, exits the PDU processor and closes the connection,
* so no extry tidy-up routines are necessary.
* @see #stop()
* @see PDUProcessor#clientRequest(Request)
* @see PDUProcessor#clientResponse(Response)
*/
public void run() {
PDU pdu = null;
debug.enter(this, "SMSCSession run()");
debug.write("SMSCSession starting receiver");
receiver.start();
isReceiving = true;
try {
while (keepReceiving) {
try {
debug.write("SMSCSession going to receive a PDU");
pdu = receiver.receive(getReceiveTimeout());
} catch (Exception e) {
debug.write("SMSCSession caught exception receiving PDU " + e.getMessage());
}
if (pdu != null) {
timeoutCntr = 0;
if (pdu.isRequest()) {
debug.write("SMSCSession got request " + pdu.debugString());
pduProcessor.clientRequest((Request) pdu);
} else if (pdu.isResponse()) {
debug.write("SMSCSession got response " + pdu.debugString());
pduProcessor.clientResponse((Response) pdu);
} else {
debug.write("SMSCSession not reqest nor response => not doing anything.");
}
} else {
timeoutCntr++;
if (timeoutCntr > 5) {
debug.write("SMSCSession stoped due to inactivity");
stop();
}
}
}
} finally {
isReceiving = false;
}
debug.write("SMSCSession stopping receiver");
receiver.stop();
debug.write("SMSCSession exiting PDUProcessor");
pduProcessor.exit();
try {
debug.write("SMSCSession closing connection");
connection.close();
} catch (IOException e) {
event.write(e, "closing SMSCSession's connection.");
}
debug.write("SMSCSession exiting run()");
debug.exit(this);
}
/**
* Sends a PDU to the client.
* @param pdu the PDU to send
*/
public void send(PDU pdu) throws IOException, PDUException {
timeoutCntr = 0;
debug.write("SMSCSession going to send pdu over transmitter");
transmitter.send(pdu);
debug.write("SMSCSession pdu sent over transmitter");
}
/**
* Sets new PDU processor.
* @param pduProcessor the new PDU processor
*/
public void setPDUProcessor(PDUProcessor pduProcessor) {
this.pduProcessor = pduProcessor;
}
public void setPDUProcessorFactory(PDUProcessorFactory pduProcessorFactory) {
// Ignore, the pdu processor is created by listene
}
/**
* Sets the timeout for receiving the complete message.
* @param timeout the new timeout value
*/
public void setReceiveTimeout(long timeout) {
receiveTimeout = timeout;
}
/**
* Returns the current setting of receiving timeout.
* @return the current timeout value
*/
public long getReceiveTimeout() {
return receiveTimeout;
}
/**
* Returns the details about the account that is logged in to this session
* @return An object representing the account. It is casted to the correct type by the implementation
*/
public Object getAccount() {
return null;
}
/**
* Set details about the account that is logged in to this session
* @param account An object representing the account. It is casted to the correct type by the implementation
*/
public void setAccount(Object account) {
}
/**
* @return Returns the isReceiving.
*/
public boolean isReceiving() {
return isReceiving;
}
/**
* @param isReceiving The isReceiving to set.
*/
public void setReceiving(boolean isReceiving) {
this.isReceiving = isReceiving;
}
public Connection getConnection() {
return connection;
}
}
/*
* $Log: not supported by cvs2svn $
* Revision 1.1 2003/09/30 09:17:49 sverkera
* Created an interface for SMSCListener and SMSCSession and implementations of them so that it is possible to provide other implementations of these classes.
*
* Revision 1.1 2003/07/23 00:28:39 sverkera
* Imported
*
*/