TcpConnectionInformation Class

Note: This class is new in the .NET Framework version 2.0.

Provides information about the Transmission Control Protocol (TCP) connections on the local computer.

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

public abstract class TcpConnectionInformation
public abstract class TcpConnectionInformation
public abstract class TcpConnectionInformation

TCP is a connection-oriented reliable protocol for transporting data between networked computers. It is defined in IETF RFC 793.

The following example displays endpoint information for active TCP connections.

public static void GetTcpConnections()
    IPGlobalProperties properties = IPGlobalProperties.GetIPGlobalProperties();
    TcpConnectionInformation[] connections = properties.GetActiveTcpConnections();
    foreach (TcpConnectionInformation t in connections)
        Console.Write("Local endpoint: {0} ",t.LocalEndPoint.Address);
        Console.Write("Remote endpoint: {0} ",t.RemoteEndPoint.Address);


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

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0