HttpListenerRequest.KeepAlive Property
Important
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Gets a Boolean value that indicates whether the client requests a persistent connection.
public:
property bool KeepAlive { bool get(); };
public bool KeepAlive { get; }
member this.KeepAlive : bool
Public ReadOnly Property KeepAlive As Boolean
true
if the connection should be kept open; otherwise, false
.
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 Shared Sub ShowRequestProperties2(ByVal request As HttpListenerRequest)
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)
End Sub
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
.
Product | Versions |
---|---|
.NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 2.0, 2.1 |
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