SystemIPInterfaceStatistics.cs

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namespace System.Net.NetworkInformation;
 
internal sealed class SystemIPInterfaceStatistics : IPInterfaceStatistics
{
    private readonly global::Interop.IpHlpApi.MibIfRow2 _ifRow;
 
    public override long OutputQueueLength => (long)_ifRow.outQLen;
 
    public override long BytesSent => (long)_ifRow.outOctets;
 
    public override long BytesReceived => (long)_ifRow.inOctets;
 
    public override long UnicastPacketsSent => (long)_ifRow.outUcastPkts;
 
    public override long UnicastPacketsReceived => (long)_ifRow.inUcastPkts;
 
    public override long NonUnicastPacketsSent => (long)_ifRow.outNUcastPkts;
 
    public override long NonUnicastPacketsReceived => (long)_ifRow.inNUcastPkts;
 
    public override long IncomingPacketsDiscarded => (long)_ifRow.inDiscards;
 
    public override long OutgoingPacketsDiscarded => (long)_ifRow.outDiscards;
 
    public override long IncomingPacketsWithErrors => (long)_ifRow.inErrors;
 
    public override long OutgoingPacketsWithErrors => (long)_ifRow.outErrors;
 
    public override long IncomingUnknownProtocolPackets => (long)_ifRow.inUnknownProtos;
 
    internal SystemIPInterfaceStatistics(long index)
    {
        _ifRow = GetIfEntry2(index);
    }
 
    internal static global::Interop.IpHlpApi.MibIfRow2 GetIfEntry2(long index)
    {
        global::Interop.IpHlpApi.MibIfRow2 pIfRow = default(global::Interop.IpHlpApi.MibIfRow2);
        if (index == 0L)
        {
            return pIfRow;
        }
        pIfRow.interfaceIndex = (uint)index;
        uint ifEntry = global::Interop.IpHlpApi.GetIfEntry2(ref pIfRow);
        if (ifEntry != 0)
        {
            throw new NetworkInformationException((int)ifEntry);
        }
        return pIfRow;
    }
}