HttpListenerRequest.KeepAlive Property

Gets a Boolean value that indicates whether the client requests a persistent connection.

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

public bool KeepAlive { get; }
/** @property */
public boolean get_KeepAlive ()

public function get KeepAlive () : boolean

Not applicable.

Property Value

true if the connection should be kept open; otherwise, false.

If an HTTP client and server expect to exchange data multiple times in a short time period, a persistent connection speeds up their communications by allowing them to avoid the overhead required to open and close a TCP connection for each message. For clients using HTTP/1.1, the default value for this property is true.

The following code example demonstrates using this property.

public static void ShowRequestProperties2 (HttpListenerRequest request)
    Console.WriteLine("KeepAlive: {0}", request.KeepAlive);
    Console.WriteLine("Local end point: {0}", request.LocalEndPoint.ToString());
    Console.WriteLine("Remote end point: {0}", request.RemoteEndPoint.ToString());
    Console.WriteLine("Is local? {0}", request.IsLocal);
    Console.WriteLine("HTTP method: {0}", request.HttpMethod);
    Console.WriteLine("Protocol version: {0}", request.ProtocolVersion);
    Console.WriteLine("Is authenticated: {0}", request.IsAuthenticated);
    Console.WriteLine("Is secure: {0}", request.IsSecureConnection);


public static void ShowRequestProperties2(HttpListenerRequest request)
    Console.WriteLine("KeepAlive: {0}", 
    Console.WriteLine("Local end point: {0}", 
    Console.WriteLine("Remote end point: {0}", 
    Console.WriteLine("Is local? {0}", 
    Console.WriteLine("HTTP method: {0}", 
    Console.WriteLine("Protocol version: {0}", 
    Console.WriteLine("Is authenticated: {0}", 
    Console.WriteLine("Is secure: {0}", 
} //ShowRequestProperties2

Windows 98, Windows Server 2003, Windows XP Media Center Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

Community Additions