public static unsafe void EnableKeepaliveWindows(this Socket socket, uint time = 2000, uint interval = 500)
{
QueryKeepalive(socket);
tcp_keepalive keepalive = new tcp_keepalive
{
onoff = 1,
keepalivetime = time,
keepaliveinterval = interval
};
void *pKeepalive = &keepalive;
byte[] bytes = new Span <byte>(pKeepalive, sizeof(tcp_keepalive)).ToArray();
byte[] outVals = new byte[bytes.Length];
int retVal = socket.IOControl(IOControlCode.KeepAliveValues, bytes, outVals);
if (retVal != 0)
{
throw new Exception("IOControl(IOControlCode.KeepAliveValues) != 0");
}
QueryKeepalive(socket);
}
