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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* tcpsocket.h
*
* Thu Oct 19 10:24:25 CEST 2006
* Copyright 2006 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of Artefact.
*
* Artefact is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Artefact is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Artefact; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#ifndef __ARTEFACT_TCPSOCKET_H__
#define __ARTEFACT_TCPSOCKET_H__
#include <string>
#include "exception.h"
/**
* This exception is thrown by TCPSocket when the socket creation fails.
*/
class TCPSocketException: public Exception {
public:
TCPSocketException(std::string reason) :
Exception("Could not create socket: " + reason) {}
};
/**
* This exception is thrown by TCPSocket when listen fails.
*/
class TCPListenException: public Exception {
public:
TCPListenException(std::string reason) :
Exception("Listen failed: " + reason) {}
};
/**
* This exception is thrown by TCPSocket when accept fails.
*/
class TCPAcceptException: public Exception {
public:
TCPAcceptException(std::string reason) :
Exception("Accept failed: " + reason) {}
};
/**
* This exception is thrown by TCPSocket when connection fails.
*/
class TCPConnectException: public Exception {
public:
TCPConnectException(std::string host, std::string port, std::string reason) :
Exception("Could not connect to " + host + ":" + port + ": " + reason) {}
};
/**
* This exception is thrown by TCPSocket when reading fails.
*/
class TCPReadException: public Exception {
public:
TCPReadException(std::string reason) :
Exception("TCPSocket could not read data: " + reason) {}
};
/**
* This exception is thrown by TCPSocket when writing fails.
*/
class TCPWriteException: public Exception {
public:
TCPWriteException(std::string reason) :
Exception("TCPSocket could not write data: " + reason) {}
};
/**
* This exception is thrown by TCPSocket when there is an error in name lookup.
*/
class TCPNameException: public Exception {
public:
TCPNameException(std::string reason) :
Exception("TCPSocket could not get name: " + reason) {}
};
/**
* This class is used to commumicate through a TCP/IP connection, wether it
* is a server (listening) or a client (transmitting).
*/
class TCPSocket {
public:
/**
* Constructor. Creates a new tcp socket.
*/
TCPSocket() throw(TCPSocketException);
/**
* Destructor. Closes the tcp socket.
*/
~TCPSocket();
/**
* Sets the socket in listen mode.\n
* @param port The port number on which to listen.
*/
void listen(unsigned short int port) throw(TCPListenException);
/**
* Accept an incoming connection.\n
* The call is blocking and returns only when an incoming connection is received.\n
* The socket must be in listen mode in order for this call to work.\n
* Multiple accepts can be made on the same listening socket.
* @return A connected TCPSocket ready to communicate.
*/
TCPSocket accept() throw(TCPAcceptException);
/**
* Connects to a host for data transmission.
* @param addr The address of the host to connect to.
* @param port The portnumber of the host to connect to.
*/
void connect(std::string addr, unsigned short int port) throw(TCPConnectException);
/**
* Disconnect the socket.
*/
void disconnect();
/**
* Tells whether the socket is connected or not.
* @return true if the socket is connected, false if not.
*/
bool connected();
/**
* Reads bytes from the socket into a buffer.
* @param buf The buffer into which the data will be written.
* @param size The maximum number of bytes to read in (the size of the buffer).
* @return The actual number of bytes read.
*/
int read(char *buf, int size) throw(TCPReadException);
/**
* Writes bytes from a buffer to the socket.
* @param data The buffer from which the data will be read.
* @param size The number of bytes to write.
* @return The actual number of bytes written.
*/
int write(char *data, int size) throw(TCPWriteException);
/**
* Get the source address of the socket (IP address not DNS name).
* @return An STL string containing the source address.
*/
std::string srcaddr() throw(TCPNameException);
/**
* Get the destination address of the socket (IP address not DNS name).
* @return An STL string containing the destination address.
*/
std::string dstaddr() throw(TCPNameException);
private:
bool isconnected;
int sock;
};
#endif/*__ARTEFACT_TCPSOCKET_H__*/
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