TcpStatistics.CurrentConnections Property

Definition

Namespace:

System.Net.NetworkInformation

Assembly:

System.Net.NetworkInformation.dll

Gets the number of current Transmission Control Protocol (TCP) connections.

public:
 abstract property long CurrentConnections { long get(); };

public abstract long CurrentConnections { get; }

member this.CurrentConnections : int64

Public MustOverride ReadOnly Property CurrentConnections As Long

Property Value

Int64

An Int64 value that specifies the total number of current TCP connections.

Examples

The following code example displays connection information.

void ShowTcpConnectionStatistics()
{
   IPGlobalProperties ^ properties = IPGlobalProperties::GetIPGlobalProperties();
   TcpStatistics ^ tcpstat = properties->GetTcpIPv4Statistics();
   Console::WriteLine( "  Connection Data:" );
   Console::WriteLine( "      Current  ............................ : {0}", 
       tcpstat->CurrentConnections );
   Console::WriteLine( "      Cumulative .......................... : {0}", 
       tcpstat->CumulativeConnections );
   Console::WriteLine( "      Initiated ........................... : {0}", 
       tcpstat->ConnectionsInitiated );
   Console::WriteLine( "      Accepted ............................ : {0}", 
       tcpstat->ConnectionsAccepted );
   Console::WriteLine( "      Failed Attempts ..................... : {0}", 
       tcpstat->FailedConnectionAttempts );
   Console::WriteLine( "      Reset ............................... : {0}", 
       tcpstat->ResetConnections );
   Console::WriteLine( "      Errors .............................. : {0}", 
       tcpstat->ErrorsReceived );
}

public static void ShowTcpConnectionStatistics()
{
    IPGlobalProperties properties = IPGlobalProperties.GetIPGlobalProperties();
    TcpStatistics tcpstat = properties.GetTcpIPv4Statistics();

    Console.WriteLine("  Connection Data:");
    Console.WriteLine("      Current  ............................ : {0}",
        tcpstat.CurrentConnections);
    Console.WriteLine("      Cumulative .......................... : {0}",
        tcpstat.CumulativeConnections);
    Console.WriteLine("      Initiated ........................... : {0}",
        tcpstat.ConnectionsInitiated);
    Console.WriteLine("      Accepted ............................ : {0}",
        tcpstat.ConnectionsAccepted);
    Console.WriteLine("      Failed Attempts ..................... : {0}",
        tcpstat.FailedConnectionAttempts);
    Console.WriteLine("      Reset ............................... : {0}",
        tcpstat.ResetConnections);
    Console.WriteLine("      Errors .............................. : {0}",
        tcpstat.ErrorsReceived);
    Console.WriteLine();
}

Public Shared Sub ShowTcpConnectionStatistics() 
    Dim properties As IPGlobalProperties = IPGlobalProperties.GetIPGlobalProperties()
    Dim tcpstat As TcpStatistics = properties.GetTcpIPv4Statistics()
    
    Console.WriteLine("  Connection Data:")
    Console.WriteLine("      Current  ............................ : {0}", tcpstat.CurrentConnections)
    Console.WriteLine("      Cumulative .......................... : {0}", tcpstat.CumulativeConnections)
    Console.WriteLine("      Initiated ........................... : {0}", tcpstat.ConnectionsInitiated)
    Console.WriteLine("      Accepted ............................ : {0}", tcpstat.ConnectionsAccepted)
    Console.WriteLine("      Failed Attempts ..................... : {0}", tcpstat.FailedConnectionAttempts)
    Console.WriteLine("      Reset ............................... : {0}", tcpstat.ResetConnections)
    Console.WriteLine("      Errors .............................. : {0}", tcpstat.ErrorsReceived)

End Sub

Remarks

IETF RFC 2012 formally defines this value as, "The number of TCP connections for which the current state is either ESTABLISHED or CLOSE-WAIT."