135 lines
4.7 KiB
C++
Executable File
135 lines
4.7 KiB
C++
Executable File
/******************************************************************************\
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* Copyright (c) 2004-2009
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*
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* Author(s):
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* Volker Fischer
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*
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******************************************************************************
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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\******************************************************************************/
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#include "socket.h"
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/* Implementation *************************************************************/
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void CSocket::Init ( const quint16 iPortNumber )
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{
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// allocate memory for network receive and send buffer in samples
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vecbyRecBuf.Init ( MAX_SIZE_BYTES_NETW_BUF );
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// initialize the listening socket
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bool bSuccess = SocketDevice.bind (
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QHostAddress ( QHostAddress::Any ), iPortNumber );
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// if no success, try if server is on same machine (only for client)
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if ( ( !bSuccess ) && bIsClient )
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{
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// if server and client is on same machine, decrease port number by
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// one by definition
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bSuccess = SocketDevice.bind (
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QHostAddress( QHostAddress::Any ), iPortNumber - 1 );
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}
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if ( !bSuccess )
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{
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// we cannot bind socket, throw error
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throw CGenErr ( "Cannot bind the socket (maybe "
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"the software is already running).", "Network Error" );
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}
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// connect the "activated" signal
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QObject::connect ( &SocketDevice, SIGNAL ( readyRead() ),
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this, SLOT ( OnDataReceived() ) );
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}
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void CSocket::SendPacket ( const CVector<unsigned char>& vecbySendBuf,
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const CHostAddress& HostAddr )
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{
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const int iVecSizeOut = vecbySendBuf.Size();
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if ( iVecSizeOut != 0 )
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{
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// send packet through network (we have to convert the constant unsigned
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// char vector in "const char*", for this we first convert the const
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// unsigned char vector in a read/write unsigned char vector and then
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// do the cast to const char*)
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SocketDevice.writeDatagram (
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(const char*) &( (CVector<unsigned char>) vecbySendBuf )[0],
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iVecSizeOut, HostAddr.InetAddr, HostAddr.iPort );
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}
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}
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void CSocket::OnDataReceived()
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{
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while ( SocketDevice.hasPendingDatagrams() )
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{
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QHostAddress SenderAddress;
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quint16 SenderPort;
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// read block from network interface and query address of sender
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int iNumBytesRead = SocketDevice.readDatagram ( (char*) &vecbyRecBuf[0],
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MAX_SIZE_BYTES_NETW_BUF, &SenderAddress, &SenderPort );
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// check if an error occurred
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if ( iNumBytesRead < 0 )
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{
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return;
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}
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// convert address of client
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const CHostAddress RecHostAddr ( SenderAddress, SenderPort );
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if ( bIsClient )
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{
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// client
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// check if packet comes from the server we want to connect
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if ( !( pChannel->GetAddress() == RecHostAddr ) )
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{
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return;
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}
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switch ( pChannel->PutData ( vecbyRecBuf, iNumBytesRead ) )
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{
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case PS_AUDIO_OK:
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PostWinMessage ( MS_JIT_BUF_PUT, MUL_COL_LED_GREEN );
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break;
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case PS_AUDIO_ERR:
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case PS_GEN_ERROR:
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PostWinMessage ( MS_JIT_BUF_PUT, MUL_COL_LED_RED );
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break;
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case PS_PROT_ERR:
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PostWinMessage ( MS_JIT_BUF_PUT, MUL_COL_LED_YELLOW );
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break;
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}
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}
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else
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{
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// server
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if ( pChannelSet->PutData ( vecbyRecBuf, iNumBytesRead, RecHostAddr ) )
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{
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// this was an audio packet, start server
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// tell the server object to wake up if it
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// is in sleep mode (Qt will delete the event object when done)
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QCoreApplication::postEvent ( pServer,
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new CLlconEvent ( MS_PACKET_RECEIVED, 0, 0 ) );
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}
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}
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}
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}
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