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UDPDaemon command line flag to list network interfaces

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This commit is contained in:
Bill Somerville 2020-11-02 22:08:37 +00:00
parent 93d1e17005
commit 014812e6c6
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1 changed files with 49 additions and 0 deletions
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49
UDPExamples/UDPDaemon.cpp
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@ -17,12 +17,14 @@
#include <iostream>
#include <exception>
#include <cstdlib>
#include <QCoreApplication>
#include <QCommandLineParser>
#include <QCommandLineOption>
#include <QString>
#include <QStringList>
#include <QNetworkInterface>
#include <QDateTime>
#include <QTime>
#include <QHash>
@ -212,6 +214,42 @@ private:
QHash<ClientKey, Client *> clients_;
};
void list_interfaces ()
{
for (auto const& net_if : QNetworkInterface::allInterfaces ())
{
if (net_if.flags () & QNetworkInterface::IsUp)
{
std::cout << net_if.humanReadableName ().toStdString () << ":\n"
" id: " << net_if.name ().toStdString () << " (" << net_if.index () << ")\n"
" addr: " << net_if.hardwareAddress ().toStdString () << "\n"
" flags: ";
if (net_if.flags () & QNetworkInterface::IsRunning)
{
std::cout << "Running ";
}
if (net_if.flags () & QNetworkInterface::CanBroadcast)
{
std::cout << "Broadcast ";
}
if (net_if.flags () & QNetworkInterface::CanMulticast)
{
std::cout << "Multicast ";
}
if (net_if.flags () & QNetworkInterface::IsLoopBack)
{
std::cout << "Loop-back ";
}
std::cout << "\n addresses:\n";
for (auto const& ae : net_if.addressEntries ())
{
std::cout << " " << ae.ip ().toString ().toStdString () << '\n';
}
std::cout << '\n';
}
}
}
#include "UDPDaemon.moc"
int main (int argc, char * argv[])
@ -232,6 +270,11 @@ int main (int argc, char * argv[])
auto help_option = parser.addHelpOption ();
auto version_option = parser.addVersionOption ();
QCommandLineOption list_option (QStringList {"l", "list-interfaces"},
app.translate ("UDPDaemon",
"Print the available network interfaces."));
parser.addOption (list_option);
QCommandLineOption port_option (QStringList {"p", "port"},
app.translate ("UDPDaemon",
"Where <PORT> is the UDP service port number to listen on.\n"
@ -257,6 +300,12 @@ int main (int argc, char * argv[])
parser.process (app);
if (parser.isSet (list_option))
{
list_interfaces ();
return EXIT_SUCCESS;
}
Server server {static_cast<port_type> (parser.value (port_option).toUInt ())
, QHostAddress {parser.value (multicast_addr_option).trimmed ()}
, parser.values (network_interface_option)};