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HttpWebRequest.MaximumResponseHeadersLength Property

Gets or sets the maximum allowed length of the response headers.

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

'Declaration
Public Property MaximumResponseHeadersLength As Integer
'Usage
Dim instance As HttpWebRequest
Dim value As Integer

value = instance.MaximumResponseHeadersLength

instance.MaximumResponseHeadersLength = value
/** @property */
public int get_MaximumResponseHeadersLength ()

/** @property */
public void set_MaximumResponseHeadersLength (int value)

public function get MaximumResponseHeadersLength () : int

public function set MaximumResponseHeadersLength (value : int)

Not applicable.

Property Value

The length, in kilobytes (1024 bytes), of the response headers.

Exception typeCondition

InvalidOperationException

The property is set after the request has already been submitted.

ArgumentOutOfRangeException

The value is less than 0 and is not equal to -1.

The length of the response header includes the response status line and any extra control characters that are received as part of HTTP protocol. A value of -1 means no limit is imposed on the response headers; a value of 0 means that all requests fails.

The following code example sets the value of this property.

Imports System
Imports System.Net
Imports System.Text
Imports System.IO


    Public Class Test

        ' Specify the URL to receive the request.
        Public Shared Sub Main(ByVal args() As String)
        Dim request As HttpWebRequest = CType(WebRequest.Create(args(0)), HttpWebRequest)


        ' Set some reasonable limits on resources used by this request
        request.MaximumAutomaticRedirections = 4
        request.MaximumResponseHeadersLength = 4

        ' Set credentials to use for this request.
        request.Credentials = CredentialCache.DefaultCredentials

        Dim response As HttpWebResponse = CType(request.GetResponse(), HttpWebResponse)

        Console.WriteLine("Content length is {0}", response.ContentLength)
        Console.WriteLine("Content type is {0}", response.ContentType)

        ' Get the stream associated with the response.
        Dim receiveStream As Stream = response.GetResponseStream()

        ' Pipes the stream to a higher level stream reader with the required encoding format. 
        Dim readStream As New StreamReader(receiveStream, Encoding.UTF8)

        Console.WriteLine("Response stream received.")
        Console.WriteLine(readStream.ReadToEnd())
        response.Close()
        readStream.Close()
    End Sub 'Main
End Class 'Test
'
'The output from this example will vary depending on the value passed into Main 
'but will be similar to the following:
'
'Content length is 1542
'Content type is text/html; charset=utf-8
'Response stream received.
'<html>
'...
'</html>
'
'

Windows 98, Windows Server 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 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, 1.1

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