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TcpStatistics Class

Provides Transmission Control Protocol (TCP) statistical data.

System.Object
  System.Net.NetworkInformation.TcpStatistics

Namespace:  System.Net.NetworkInformation
Assembly:  System (in System.dll)

public abstract class TcpStatistics

The TcpStatistics type exposes the following members.

  NameDescription
Protected methodTcpStatisticsInitializes a new instance of the TcpStatistics class.
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  NameDescription
Public propertyConnectionsAcceptedGets the number of accepted Transmission Control Protocol (TCP) connection requests.
Public propertyConnectionsInitiatedGets the number of Transmission Control Protocol (TCP) connection requests made by clients.
Public propertyCumulativeConnectionsSpecifies the total number of Transmission Control Protocol (TCP) connections established.
Public propertyCurrentConnectionsGets the number of current Transmission Control Protocol (TCP) connections.
Public propertyErrorsReceivedGets the number of Transmission Control Protocol (TCP) errors received.
Public propertyFailedConnectionAttemptsGets the number of failed Transmission Control Protocol (TCP) connection attempts.
Public propertyMaximumConnectionsGets the maximum number of supported Transmission Control Protocol (TCP) connections.
Public propertyMaximumTransmissionTimeoutGets the maximum retransmission time-out value for Transmission Control Protocol (TCP) segments.
Public propertyMinimumTransmissionTimeoutGets the minimum retransmission time-out value for Transmission Control Protocol (TCP) segments.
Public propertyResetConnectionsGets the number of RST packets received by Transmission Control Protocol (TCP) connections.
Public propertyResetsSentGets the number of Transmission Control Protocol (TCP) segments sent with the reset flag set.
Public propertySegmentsReceivedGets the number of Transmission Control Protocol (TCP) segments received.
Public propertySegmentsResentGets the number of Transmission Control Protocol (TCP) segments re-sent.
Public propertySegmentsSentGets the number of Transmission Control Protocol (TCP) segments sent.
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  NameDescription
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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Instances of this class are returned by the GetTcpIPv4Statistics and GetTcpIPv6Statistics methods, to give applications access to TCP traffic information.

The information in this class correlates to the management information objects described in http://www.ietf.org/rfc/rfc2012.txt.

The following code example displays the TCP statistics for the specified address family.

public static void ShowTcpStatistics(NetworkInterfaceComponent version)
{
    IPGlobalProperties properties = IPGlobalProperties.GetIPGlobalProperties();
    TcpStatistics tcpstat = null;
    Console.WriteLine("");
    switch (version)
    {
        case NetworkInterfaceComponent.IPv4:
             tcpstat = properties.GetTcpIPv4Statistics();
            Console.WriteLine("TCP/IPv4 Statistics:");
            break;
        case NetworkInterfaceComponent.IPv6:
            tcpstat = properties.GetTcpIPv6Statistics();
            Console.WriteLine("TCP/IPv6 Statistics:");
            break;
        default:
            throw new ArgumentException("version");
        //    break;
    }
    Console.WriteLine("  Minimum Transmission Timeout............. : {0}", 
        tcpstat.MinimumTransmissionTimeout);
    Console.WriteLine("  Maximum Transmission Timeout............. : {0}", 
        tcpstat.MaximumTransmissionTimeout);

    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("");
    Console.WriteLine("  Segment Data:");
    Console.WriteLine("      Received  ........................... : {0}", 
        tcpstat.SegmentsReceived);
    Console.WriteLine("      Sent ................................ : {0}", 
        tcpstat.SegmentsSent);
    Console.WriteLine("      Retransmitted ....................... : {0}", 
        tcpstat.SegmentsResent);

    Console.WriteLine("");
}

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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