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Enable socket Keep-Alive on Windows

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Windows does not use setsockopt for keep-alive configuration,
requiring WSAIoctl call.

https://learn.microsoft.com/en-us/windows/win32/winsock/sio-keepalive-vals

BUG: 442790
BUG: 451597
This commit is contained in:
ValdikSS ValdikSS 2023-03-04 13:06:55 +00:00 committed by Albert Vaca Cintora
parent 6fcbe4a270
commit bd796836c5
1 changed files with 24 additions and 0 deletions
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24
core/backends/lan/lanlinkprovider.cpp
View file

@ -12,6 +12,9 @@
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <sys/socket.h>
#else
#include <winsock2.h>
#include <mstcpip.h>
#endif
#include <QHostInfo>
@ -602,6 +605,27 @@ void LanLinkProvider::configureSocket(QSslSocket *socket)
int count = 3;
setsockopt(socket->socketDescriptor(), IPPROTO_TCP, TCP_KEEPCNT, &count, sizeof(count));
#endif
#if defined(Q_OS_WIN)
int maxIdle = 5 * 60 * 1000; // 5 minutes of idle before sending keep-alives
int interval = 5 * 1000; // 5 seconds interval between probes after 5 minute delay
DWORD nop;
// see https://learn.microsoft.com/en-us/windows/win32/winsock/sio-keepalive-vals
struct tcp_keepalive keepalive = {
1 /* true */,
maxIdle,
interval
};
int rv = WSAIoctl(socket->socketDescriptor(), SIO_KEEPALIVE_VALS, &keepalive,
sizeof(keepalive), nullptr, 0, &nop,
nullptr, nullptr);
if (!rv) {
int error = WSAGetLastError();
qCDebug(KDECONNECT_CORE) << "Could not enable TCP Keep-Alive: " << error;
}
#endif
}
void LanLinkProvider::addLink(const QString &deviceId, QSslSocket *socket, NetworkPacket *receivedPacket, LanDeviceLink::ConnectionStarted connectionOrigin)