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/*
* Copyright (C) 2007-2019 Xagasoft, All rights reserved.
*
* This file is part of the libbu++ library and is released under the
* terms of the license contained in the file LICENSE.
*/
#ifndef BU_TCP_SOCKET_H
#define BU_TCP_SOCKET_H
#include <stdint.h>
#include "bu/config.h"
#include "bu/stream.h"
#include "bu/string.h"
#include "bu/exceptionbase.h"
namespace Bu
{
subExceptionDeclBegin( TcpSocketException );
enum {
cRead,
cWrite,
cBadRead,
cClosed,
cTimeout
};
subExceptionDeclEnd();
/**
* Network socket stream class. This class provides a mechanism for
* communicating over a network using TCP/IP. It will provide other low
* level protocol and addressing support later on, but for now it's just
* standard STREAM TCP/IP sockets.
*
* Unlike system sockets, these sockets are opened by default in
* non-blocking mode, you can specify your own timeout for opening a socket,
* and a number of non-fatal error messages have been automatically handled
* and treated as standard no-data-available-yet situations on read.
*
* Please note that there is a condition that will occur eventually (at
* least on *nix systems) that will trigger a SIGPIPE condition. This
* will terminate your program immediately unless handled properly. Most
* people doing any connections with TcpSocket will want to put this in
* their program somewhere before they use it:
*@code
#include <signal.h>
...
...
...
sigset( SIGPIPE, SIG_IGN ); // do this before you use a Bu::TcpSocket
@endcode
* When this is done, Bu::TcpSocket will simply throw a broken pipe
* exception just like every other error condition, allowing your program
* to handle it sanely.
*
*@ingroup Serving
*@ingroup Streams
*/
class TcpSocket : public Stream
{
public:
#ifdef WIN32
typedef unsigned int handle;
#else
typedef int handle;
#endif
TcpSocket( handle nTcpSocket );
TcpSocket( const String &sAddr, int nPort, int nTimeout=30,
bool bBlocking=true );
virtual ~TcpSocket();
virtual void close();
virtual size read( void *pBuf, size nBytes );
virtual size read( void *pBuf, size nBytes,
uint32_t nSec, uint32_t nUSec=0 );
virtual size write( const void *pBuf, size nBytes );
virtual size write( const void *pBuf, size nBytes,
uint32_t nSec, uint32_t nUSec=0 );
using Stream::write;
virtual size tell();
virtual void seek( size offset );
virtual void setPos( size pos );
virtual void setPosEnd( size pos );
virtual bool isEos();
virtual bool isOpen();
virtual void flush();
virtual bool canRead();
virtual bool canWrite();
virtual bool isReadable();
virtual bool isWritable();
virtual bool isSeekable();
virtual bool isBlocking();
virtual void setBlocking( bool bBlocking=true );
virtual void setSize( size iSize );
Bu::String getAddress() const;
operator handle() const;
handle getHandle() const;
handle takeHandle();
virtual size getSize() const;
virtual size getBlockSize() const;
virtual Bu::String getLocation() const;
private:
void setAddress();
handle nTcpSocket;
bool bActive;
bool bBlocking;
String sReadBuf;
String sAddress;
};
}
#endif
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