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Metis scan: scan all network interfaces. Fixes #977

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This commit is contained in:
f4exb 2021-08-08 13:19:39 +02:00
parent e034a18de1
commit a1120bca46
1 changed files with 34 additions and 9 deletions
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43
devices/metis/devicemetisscan.cpp
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@ -17,6 +17,8 @@
#include <QEventLoop>
#include <QTimer>
#include <QNetworkInterface>
#include <QSet>
#include "devicemetisscan.h"
@ -40,21 +42,44 @@ void DeviceMetisScan::scan()
buffer[2] = (unsigned char) 0x02;
std::fill(&buffer[3], &buffer[63], 0);
if (m_udpSocket.writeDatagram((const char*) buffer, sizeof(buffer), QHostAddress::Broadcast, 1024) < 0)
QList<QNetworkInterface> ifaces = QNetworkInterface::allInterfaces();
QSet<QHostAddress> broadcastAddrs;
for (int i = 0; i < ifaces.size(); i++)
{
qDebug() << "DeviceMetisScan::scan: discovery writeDatagram failed " << m_udpSocket.errorString();
return;
}
else
{
qDebug() << "DeviceMetisScan::scan: discovery writeDatagram sent";
QList<QNetworkAddressEntry> addrs = ifaces[i].addressEntries();
for (int j = 0; j < addrs.size(); j++)
{
if ((addrs[j].ip().protocol() == QAbstractSocket::IPv4Protocol) && (addrs[j].broadcast().toString() != ""))
{
QHostAddress br = addrs[j].broadcast();
broadcastAddrs.insert(br);
}
}
}
// wait for 1 second before returning
QSet<QHostAddress>::const_iterator brIt = broadcastAddrs.begin();
for (; brIt != broadcastAddrs.end(); ++brIt)
{
if (m_udpSocket.writeDatagram((const char*) buffer, sizeof(buffer), *brIt, 1024) < 0)
{
qDebug("DeviceMetisScan::scan: discovery writeDatagram to %s failed: %s ",
qPrintable(brIt->toString()), qPrintable(m_udpSocket.errorString()));
continue;
}
else
{
qDebug("DeviceMetisScan::scan: discovery writeDatagram sent to %s", qPrintable(brIt->toString()));
}
}
// wait for timeout before returning
QEventLoop loop;
QTimer *timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), &loop, SLOT(quit()));
timer->start(500);
timer->start(500); // 500 ms timeout
qDebug() << "DeviceMetisScan::scan: start 0.5 second timeout loop";
// Execute the event loop here and wait for the timeout to trigger