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HttpListenerRequest.KeepAlive Property

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

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

member KeepAlive : bool with get

Property Value

Type: System.Boolean
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);

}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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