hyperion.ng/libsrc/leddevice/dev_net/ProviderUdp.cpp
2020-08-23 21:02:25 +02:00

137 lines
3.3 KiB
C++

// STL includes
#include <cstring>
#include <cstdio>
#include <iostream>
#include <exception>
// Linux includes
#include <fcntl.h>
#include <QStringList>
#include <QUdpSocket>
#include <QHostInfo>
// Local Hyperion includes
#include "ProviderUdp.h"
const ushort MAX_PORT = 65535;
ProviderUdp::ProviderUdp(const QJsonObject &deviceConfig)
: LedDevice(deviceConfig)
, _udpSocket (nullptr)
, _port(1)
, _defaultHost("127.0.0.1")
{
_latchTime_ms = 1;
}
ProviderUdp::~ProviderUdp()
{
delete _udpSocket;
}
bool ProviderUdp::init(const QJsonObject &deviceConfig)
{
bool isInitOK = false;
// Initialise sub-class
if ( LedDevice::init(deviceConfig) )
{
QString host = deviceConfig["host"].toString(_defaultHost);
if (_address.setAddress(host) )
{
Debug( _log, "Successfully parsed %s as an ip address.", deviceConfig["host"].toString().toStdString().c_str());
}
else
{
Debug( _log, "Failed to parse [%s] as an ip address.", deviceConfig["host"].toString().toStdString().c_str());
QHostInfo info = QHostInfo::fromName(host);
if (info.addresses().isEmpty())
{
Debug( _log, "Failed to parse [%s] as a hostname.", deviceConfig["host"].toString().toStdString().c_str());
QString errortext = QString ("Invalid target address [%1]!").arg(host);
this->setInError ( errortext );
return false;
}
else
{
Debug( _log, "Successfully parsed %s as a hostname.", deviceConfig["host"].toString().toStdString().c_str());
_address = info.addresses().first();
}
}
int config_port = deviceConfig["port"].toInt(_port);
if ( config_port <= 0 || config_port > MAX_PORT )
{
QString errortext = QString ("Invalid target port [%1]!").arg(config_port);
this->setInError ( errortext );
isInitOK = false;
}
else
{
_port = static_cast<int>(config_port);
Debug( _log, "UDP using %s:%d", _address.toString().toStdString().c_str() , _port );
_udpSocket = new QUdpSocket(this);
isInitOK = true;
}
}
return isInitOK;
}
int ProviderUdp::open()
{
int retval = -1;
_isDeviceReady = false;
// Try to bind the UDP-Socket
if ( _udpSocket != nullptr )
{
QHostAddress localAddress = QHostAddress::Any;
quint16 localPort = 0;
if ( !_udpSocket->bind(localAddress, localPort) )
{
QString warntext = QString ("Could not bind local address: %1, (%2) %3").arg(localAddress.toString()).arg(_udpSocket->error()).arg(_udpSocket->errorString());
Warning ( _log, "%s", QSTRING_CSTR(warntext));
}
// Everything is OK, device is ready
_isDeviceReady = true;
retval = 0;
}
else
{
this->setInError( " Open error. UDP Socket not initialised!" );
}
return retval;
}
int ProviderUdp::close()
{
int retval = 0;
_isDeviceReady = false;
if ( _udpSocket != nullptr )
{
// Test, if device requires closing
if ( _udpSocket->isOpen() )
{
Debug(_log,"Close UDP-device: %s", QSTRING_CSTR( this->getActiveDeviceType() ) );
_udpSocket->close();
// Everything is OK -> device is closed
}
}
return retval;
}
int ProviderUdp::writeBytes(unsigned size, const uint8_t * data)
{
qint64 retVal = _udpSocket->writeDatagram((const char *)data,size,_address,_port);
WarningIf((retVal<0), _log, "&s", QSTRING_CSTR(QString
("(%1:%2) Write Error: (%3) %4").arg(_address.toString()).arg(_port).arg(_udpSocket->error()).arg(_udpSocket->errorString())));
return retVal;
}