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This commit is contained in:
Albert Vaca Cintora 2023-08-11 15:24:53 +02:00
parent ac16a75795
commit 734b7c9c0a
1 changed files with 3 additions and 0 deletions
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3
core/backends/lan/lanlinkprovider.cpp
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@ -230,6 +230,7 @@ void LanLinkProvider::sendUdpIdentityPacket(QUdpSocket &socket, const QList<QHos
for (auto &address : addresses) { for (auto &address : addresses) {
qint64 bytes = socket.writeDatagram(payload, address, m_udpBroadcastPort); qint64 bytes = socket.writeDatagram(payload, address, m_udpBroadcastPort);
qWarning() << "Send UDP identity packet to" << address;
if (bytes == -1 && socket.error() == QAbstractSocket::DatagramTooLargeError) { if (bytes == -1 && socket.error() == QAbstractSocket::DatagramTooLargeError) {
// On macOS and FreeBSD, UDP broadcasts larger than MTU get dropped. See: // On macOS and FreeBSD, UDP broadcasts larger than MTU get dropped. See:
// https://opensource.apple.com/source/xnu/xnu-3789.1.32/bsd/netinet/ip_output.c.auto.html#:~:text=/*%20don%27t%20allow%20broadcast%20messages%20to%20be%20fragmented%20*/ // https://opensource.apple.com/source/xnu/xnu-3789.1.32/bsd/netinet/ip_output.c.auto.html#:~:text=/*%20don%27t%20allow%20broadcast%20messages%20to%20be%20fragmented%20*/
@ -255,6 +256,8 @@ void LanLinkProvider::udpBroadcastReceived()
m_udpSocket.readDatagram(datagram.data(), datagram.size(), &sender); m_udpSocket.readDatagram(datagram.data(), datagram.size(), &sender);
qWarning() << "Received UDP identity packet";
if (sender.isLoopback() && !m_testMode) if (sender.isLoopback() && !m_testMode)
continue; continue;