/// <summary>
/// Gets the data plan status for either a machine-wide internet connection , or the first-hop of routing to a specific destination
/// on a connection. If an IPv4/IPv6 address is not specified, this method returns the data plan status of the connection used for
/// machine-wide Internet connectivity.
/// </summary>
/// <param name="destIPAddr">
/// The destination IPv4/IPv6 address. If <see langword="null"/>, this method will instead return the data plan status of the
/// connection used for machine-wide Internet connectivity.
/// </param>
/// <returns>
/// An NLM_DATAPLAN_STATUS structure that describes the data plan status associated with a connection used to route to a destination.
/// If destIPAddr specifies a tunnel address, the first available data plan status in the interface stack is returned.
/// </returns>
public static NLM_DATAPLAN_STATUS GetConnectionDataPlanStatus(IPAddress destIPAddr = null)
{
var addr = NLM_SOCKADDR.FromIPAddress(destIPAddr);
var cost = new NLM_DATAPLAN_STATUS();
(costmgr ?? (costmgr = (INetworkCostManager)Manager))?.GetDataPlanStatus(out cost, addr);
return(cost);
}
/// <summary>
/// Gets the current cost of either a machine-wide internet connection, or the first-hop of routing to a specific destination on a
/// connection. If destIPaddr is NULL, this method instead returns the cost of the network used for machine-wide Internet connectivity.
/// </summary>
/// <param name="destIPAddr">
/// The destination IPv4/IPv6 address. If <see langword="null"/>, this method will instead return the cost associated with the
/// preferred connection used for machine Internet connectivity.
/// </param>
/// <returns>The cost of the connection.</returns>
public static NLM_CONNECTION_COST GetConnectionCost(IPAddress destIPAddr = null)
{
var addr = NLM_SOCKADDR.FromIPAddress(destIPAddr);
var cost = NLM_CONNECTION_COST.NLM_CONNECTION_COST_UNKNOWN;
(costmgr ?? (costmgr = (INetworkCostManager)Manager))?.GetCost(out cost, addr);
return(cost);
}