private async Task PollNetworkUtilizationAsync()
{
var utilizationTable = _canQueryAdapterUtilization
? "Win32_PerfRawData_Tcpip_NetworkAdapter"
: "Win32_PerfRawData_Tcpip_NetworkInterface";
var query = $@"
SELECT Name,
Timestamp_Sys100NS,
BytesReceivedPersec,
BytesSentPersec,
PacketsReceivedPersec,
PacketsSentPersec
FROM {utilizationTable}";
var queryTime = DateTime.UtcNow.ToEpochTime();
var combinedUtil = new Interface.InterfaceUtilization
{
DateEpoch = queryTime,
InAvgBps = 0,
OutAvgBps = 0
};
using (var q = Wmi.Query(Endpoint, query))
{
foreach (var data in await q.GetDynamicResultAsync().ConfigureAwait(false))
{
var perfData = new PerfRawData(this, data);
var name = perfData.Identifier;
var iface = Interfaces.Find(i => name == GetCounterName(i.Name));
if (iface == null)
{
continue;
}
iface.InBps = (float)perfData.GetCalculatedValue("BytesReceivedPersec", 10000000);
iface.OutBps = (float)perfData.GetCalculatedValue("BytesSentPersec", 10000000);
iface.InPps = (float)perfData.GetCalculatedValue("PacketsReceivedPersec", 10000000);
iface.OutPps = (float)perfData.GetCalculatedValue("PacketsSentPersec", 10000000);
var util = new Interface.InterfaceUtilization
{
DateEpoch = queryTime,
InAvgBps = iface.InBps,
OutAvgBps = iface.OutBps
};
var netData = NetHistory.GetOrAdd(iface.Name, k => new List <Interface.InterfaceUtilization>(1024));
UpdateHistoryStorage(netData, util);
if (PrimaryInterfaces.Contains(iface))
{
combinedUtil.InAvgBps += util.InAvgBps;
combinedUtil.OutAvgBps += util.OutAvgBps;
}
}
}
UpdateHistoryStorage(CombinedNetHistory, combinedUtil);
}
internal List <Interface.InterfaceUtilization> GetInterfaceUtilizationHistory(Interface iface)
{
if (iface != null &&
Interfaces.Find(x => x == iface) != null &&
NetHistory.ContainsKey(iface.Name))
{
return(NetHistory[iface.Name]);
}
else
{
return(new List <Interface.InterfaceUtilization>(0));
}
}
internal List <Interface.InterfaceUtilization> GetInterfaceUtilizationHistory(Interface iface)
{
List <Interface.InterfaceUtilization> result;
if (iface != null &&
Interfaces.Find(x => x == iface) != null &&
NetHistory.ContainsKey(iface.Name))
{
result = NetHistory[iface.Name];
}
else
{
result = new List <Interface.InterfaceUtilization>(0);
}
return(result);
}
private async Task GetAllInterfacesAsync()
{
const string query = @"
SELECT Name,
PNPDeviceID,
DeviceID,
NetConnectionID,
Description,
MACAddress,
Speed,
InterfaceIndex
FROM Win32_NetworkAdapter
WHERE NetConnectionStatus = 2"; //connected adapters.
//'AND PhysicalAdapter = True' causes exceptions with old windows versions.
var indexMap = new Dictionary <uint, Interface>();
using (var q = Wmi.Query(Endpoint, query))
{
foreach (var data in await q.GetDynamicResultAsync().ConfigureAwait(false))
{
string id = $"{data.DeviceID}";
var i = Interfaces.Find(x => x.Id == id) ?? new Interface();
indexMap[data.InterfaceIndex] = i;
i.Id = id;
i.Alias = "!alias";
i.Caption = data.NetConnectionID;
i.FullName = data.Description;
i.NodeId = Id;
i.LastSync = DateTime.UtcNow;
i.Name = await GetRealAdapterName(data.PNPDeviceID).ConfigureAwait(false);
i.PhysicalAddress = data.MACAddress;
i.Speed = data.Speed;
i.Status = NodeStatus.Active;
i.TypeDescription = "";
i.IPs = new List <IPNet>();
i.TeamMembers = new List <string>();
if (i.Node == null)
{
i.Node = this;
Interfaces.Add(i);
}
}
}
if (_canQueryTeamingInformation)
{
const string teamsQuery = "SELECT InstanceID, Name FROM MSFT_NetLbfoTeam";
var teamNamesToInterfaces = new Dictionary <string, Interface>();
using (var q = Wmi.Query(Endpoint, teamsQuery, @"root\standardcimv2"))
{
foreach (var data in await q.GetDynamicResultAsync().ConfigureAwait(false))
{
var teamInterface = Interfaces.Find(x => x.Caption == data.Name);
if (teamInterface == null)
{
continue;
}
teamNamesToInterfaces.Add(data.Name, teamInterface);
}
}
const string teamMembersQuery = "SELECT InstanceID, Name, Team FROM MSFT_NetLbfoTeamMember";
using (var q = Wmi.Query(Endpoint, teamMembersQuery, @"root\standardcimv2"))
{
foreach (var data in await q.GetDynamicResultAsync().ConfigureAwait(false))
{
var teamName = data.Team;
if (teamNamesToInterfaces.TryGetValue(teamName, out Interface teamInterface))
{
var adapterName = data.Name;
var memberInterface = Interfaces.Find(x => x.Name == adapterName);
if (memberInterface == null)
{
continue;
}
teamInterface.TeamMembers.Add(memberInterface.Id);
}
}
}
}
const string ipQuery = @"
SELECT InterfaceIndex, IPAddress, IPSubnet, DHCPEnabled
FROM WIn32_NetworkAdapterConfiguration
WHERE IPEnabled = 'True'";
using (var q = Wmi.Query(Endpoint, ipQuery))
{
foreach (var data in await q.GetDynamicResultAsync().ConfigureAwait(false))
{
if (indexMap.TryGetValue(data.InterfaceIndex, out Interface i))
{
i.DHCPEnabled = data.DHCPEnabled;
var ips = data.IPAddress as string[];
var subnets = data.IPSubnet as string[];
if (ips == null ||
subnets == null)
{
continue;
}
for (var j = 0; j < (ips?.Length).GetValueOrDefault(0); j++)
{
if (int.TryParse(subnets[j], out int cidr) && IPNet.TryParse(ips[j], cidr, out IPNet net))
{
i.IPs.Add(net);
}
else if (IPNet.TryParse(ips[j], subnets[j], out net))
{
i.IPs.Add(net);
}
}
}
}
}
}
