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/*
* Copyright (C) 2007-2023 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 WIN32 //not on windows
#include "bu/udpsocket.h"
#include "bu/sio.h"
using namespace Bu;
#include <fcntl.h>
#include <errno.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/utsname.h>
namespace Bu { subExceptionDef( UdpSocketException ) }
#define saTarget ( *((struct sockaddr_in *)paTarget) )
Bu::UdpSocket::UdpSocket( int iUdpSocket ) :
iUdpSocket( iUdpSocket ),
paTarget( NULL ),
bBound( false )
{
}
Bu::UdpSocket::UdpSocket( const Bu::String &sAddr, int iPort, int iFlags ) :
iUdpSocket( 0 ),
paTarget( NULL ),
bBound( false )
{
iUdpSocket = socket( PF_INET, SOCK_DGRAM, 0 );
if( iUdpSocket < 0 )
{
throw UdpSocketException("Couldn't open udp socket: %s",
strerror( errno )
);
}
if( (iFlags&Broadcast) )
{
int broadcast = 1;
if( (setsockopt( iUdpSocket, SOL_SOCKET, SO_BROADCAST,
&broadcast, sizeof(broadcast) )) == -1)
{
throw UdpSocketException("Couldn't set udp socket to broadcast: %s",
strerror( errno )
);
}
}
paTarget = new struct sockaddr_in;
saTarget.sin_family = AF_INET;
saTarget.sin_port = htons( iPort );
saTarget.sin_addr.s_addr = inet_addr( sAddr.getStr() ); // INADDR_ANY;
memset( saTarget.sin_zero, '\0', sizeof(saTarget.sin_zero) );
if( (iFlags&Read) )
{
if( bind( iUdpSocket, (struct sockaddr*)paTarget, sizeof(struct sockaddr_in) )
== -1 )
{
throw UdpSocketException("Couldn't bind port to udp socket: %s",
strerror( errno )
);
}
bBound = true;
}
}
Bu::UdpSocket::~UdpSocket()
{
close();
delete (struct sockaddr_in *)paTarget;
paTarget = NULL;
}
Bu::String Bu::UdpSocket::addrToStr( const addr &a )
{
return Bu::String("%1.%2.%3.%4").
arg( (a&0xff) ).
arg( (a&0xff00)>>8 ).
arg( (a&0xff0000)>>16 ).
arg( (a&0xff000000)>>24 );
}
void Bu::UdpSocket::close()
{
::close( iUdpSocket );
}
Bu::size Bu::UdpSocket::read( void *pBuf, Bu::size nBytes )
{
return recv( iUdpSocket, pBuf, nBytes, 0 );
}
Bu::size Bu::UdpSocket::read( void *pBuf, Bu::size nBytes,
Bu::UdpSocket::addr &aHost, int &iPort )
{
sockaddr_in name;
socklen_t size = sizeof(name);
Bu::size ret = recvfrom( iUdpSocket, pBuf, nBytes, 0,
(struct sockaddr *)&name, &size );
aHost = name.sin_addr.s_addr;
iPort = ntohs(name.sin_port);
return ret;
}
Bu::size Bu::UdpSocket::write( const void *pBuf, Bu::size nBytes )
{
if( bBound )
{
return sendto( iUdpSocket, pBuf, nBytes, 0, NULL, 0 );
}
else
{
return sendto( iUdpSocket, pBuf, nBytes, 0,
(struct sockaddr*)paTarget, sizeof(struct sockaddr_in) );
}
}
Bu::size Bu::UdpSocket::tell()
{
throw Bu::UnsupportedException();
}
void Bu::UdpSocket::seek( Bu::size )
{
throw Bu::UnsupportedException();
}
void Bu::UdpSocket::setPos( Bu::size )
{
throw Bu::UnsupportedException();
}
void Bu::UdpSocket::setPosEnd( Bu::size )
{
throw Bu::UnsupportedException();
}
bool Bu::UdpSocket::isEos()
{
return false;
}
bool Bu::UdpSocket::isOpen()
{
return true;
}
void Bu::UdpSocket::flush()
{
}
bool Bu::UdpSocket::canRead()
{
return bBound;
}
bool Bu::UdpSocket::canWrite()
{
return true;
}
bool Bu::UdpSocket::isReadable()
{
return bBound;
}
bool Bu::UdpSocket::isWritable()
{
return true;
}
bool Bu::UdpSocket::isSeekable()
{
return false;
}
bool Bu::UdpSocket::isBlocking()
{
return true;
}
void Bu::UdpSocket::setBlocking( bool bBlocking )
{
#ifndef WIN32
if( bBlocking )
{
fcntl( iUdpSocket, F_SETFL, fcntl( iUdpSocket, F_GETFL, 0 ) & (~O_NONBLOCK) );
}
else
{
fcntl( iUdpSocket, F_SETFL, fcntl( iUdpSocket, F_GETFL, 0 ) | O_NONBLOCK );
}
#else
u_long iMode;
if( bBlocking )
iMode = 0;
else
iMode = 1;
//-------------------------
// Set the socket I/O mode: In this case FIONBIO
// enables or disables the blocking mode for the
// socket based on the numerical value of iMode.
// If iMode = 0, blocking is enabled;
// If iMode != 0, non-blocking mode is enabled.
bu_ioctlsocket(iUdpSocket, FIONBIO, &iMode);
#endif
}
void Bu::UdpSocket::setSize( Bu::size )
{
throw Bu::UnsupportedException();
}
Bu::size Bu::UdpSocket::getSize() const
{
throw Bu::UnsupportedException();
}
Bu::size Bu::UdpSocket::getBlockSize() const
{
return 1500;
}
Bu::String Bu::UdpSocket::getLocation() const
{
throw Bu::UnsupportedException();
}
#endif
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