HttpListenerResponse.CopyFrom Method (HttpListenerResponse)

 
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Copies properties from the specified HttpListenerResponse to this response.

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

public void CopyFrom(
	HttpListenerResponse templateResponse
)

Parameters

templateResponse
Type: System.Net.HttpListenerResponse

The HttpListenerResponse instance to copy.

If you regularly change many properties from their default values to a fixed set of new values, it is convenient to use an HttpListenerResponse instance as a template. Customize the template response once and, instead of configuring each response separately, call the CopyFrom method to configure a new response based on property values in the template response.

The following properties are copied from templateResponse to the current instance.

The following code example demonstrates creating a response by copying a template response.

static string message403;
static HttpListenerResponse preMade403Response;
static void SendBadCertificateResponse(HttpListenerResponse response)
{
    if (preMade403Response == null)
    {
        // Set up an authentication error response template.
        response.StatusCode = (int)HttpStatusCode.Forbidden;
        response.StatusDescription = "403 Forbidden";
        response.ProtocolVersion = new Version("1.1");
        response.SendChunked = false;

        preMade403Response = response;
    }
    else
    {
        response.CopyFrom(preMade403Response);
    }

    // The response body cannot be saved in the template.

    StringBuilder message = new StringBuilder();
    message.Append("<HTML><BODY>");
    message.Append("<p> Error message 403: Access is denied due to a missing or invalid client certificate.</p>");
    message.Append("</BODY></HTML>");
    message403 = message.ToString();

    // Turn the error message into a byte array using the 
    // encoding from the response when present.
    System.Text.Encoding encoding = response.ContentEncoding;
    if (encoding == null)
    {
        encoding = System.Text.Encoding.UTF8;
        response.ContentEncoding = encoding;
    }

    byte[] buffer = encoding.GetBytes(message403);
    response.ContentLength64 = buffer.Length;
    // Write the error message.
    System.IO.Stream stream = response.OutputStream;
    stream.Write(buffer, 0, buffer.Length);
    // Send the response.
    response.Close();
}

.NET Framework
Available since 2.0
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