diff options
Diffstat (limited to 'examples/network/multicastsender/sender.cpp')
| -rw-r--r-- | examples/network/multicastsender/sender.cpp | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/examples/network/multicastsender/sender.cpp b/examples/network/multicastsender/sender.cpp index cb4bf45672..a542a2528f 100644 --- a/examples/network/multicastsender/sender.cpp +++ b/examples/network/multicastsender/sender.cpp @@ -52,11 +52,21 @@ Sender::Sender(QWidget *parent) : QDialog(parent), - groupAddress(QStringLiteral("239.255.43.21")) + groupAddress4(QStringLiteral("239.255.43.21")), + groupAddress6(QStringLiteral("ff12::2115")) { - statusLabel = new QLabel(tr("Ready to multicast datagrams to group %1 on port 45454").arg(groupAddress.toString())); + // force binding to their respective families + udpSocket4.bind(QHostAddress(QHostAddress::AnyIPv4), 0); + udpSocket6.bind(QHostAddress(QHostAddress::AnyIPv6), udpSocket4.localPort()); - auto ttlLabel = new QLabel(tr("TTL for multicast datagrams:")); + QString msg = tr("Ready to multicast datagrams to groups %1 and [%2] on port 45454").arg(groupAddress4.toString()); + if (udpSocket6.state() != QAbstractSocket::BoundState) + msg = tr("IPv6 failed. Ready to multicast datagrams to group %1 on port 45454").arg(groupAddress4.toString()); + else + msg = msg.arg(groupAddress6.toString()); + statusLabel = new QLabel(msg); + + auto ttlLabel = new QLabel(tr("TTL for IPv4 multicast datagrams:")); auto ttlSpinBox = new QSpinBox; ttlSpinBox->setRange(0, 255); @@ -88,7 +98,8 @@ Sender::Sender(QWidget *parent) void Sender::ttlChanged(int newTtl) { - udpSocket.setSocketOption(QAbstractSocket::MulticastTtlOption, newTtl); + // we only set the TTL on the IPv4 socket, as that changes the multicast scope + udpSocket4.setSocketOption(QAbstractSocket::MulticastTtlOption, newTtl); } void Sender::startSending() @@ -101,6 +112,8 @@ void Sender::sendDatagram() { statusLabel->setText(tr("Now sending datagram %1").arg(messageNo)); QByteArray datagram = "Multicast message " + QByteArray::number(messageNo); - udpSocket.writeDatagram(datagram, groupAddress, 45454); + udpSocket4.writeDatagram(datagram, groupAddress4, 45454); + if (udpSocket6.state() == QAbstractSocket::BoundState) + udpSocket6.writeDatagram(datagram, groupAddress6, 45454); ++messageNo; } |