HttpListenerResponse.ContentLength64 HttpListenerResponse.ContentLength64 HttpListenerResponse.ContentLength64 HttpListenerResponse.ContentLength64 Property

Definición

Obtiene o establece el número de bytes de los datos del cuerpo incluidos en la respuesta.Gets or sets the number of bytes in the body data included in the response.

public:
 property long ContentLength64 { long get(); void set(long value); };
public long ContentLength64 { get; set; }
member this.ContentLength64 : int64 with get, set
Public Property ContentLength64 As Long

Valor de propiedad

Valor del encabezado Content-Length de la respuesta.The value of the response's Content-Length header.

Excepciones

El valor especificado para una operación de conjunto es menor que cero.The value specified for a set operation is less than zero.

Ya se está enviando la respuesta.The response is already being sent.

Ejemplos

En el ejemplo de código siguiente se muestra cómo establecer el valor de esta propiedad.The following code example demonstrates setting the value of this property.

// This example requires the System and System.Net namespaces.
public static void SimpleListenerExample(string[] prefixes)
{
    if (!HttpListener.IsSupported)
    {
        Console.WriteLine ("Windows XP SP2 or Server 2003 is required to use the HttpListener class.");
        return;
    }
    // URI prefixes are required,
    // for example "http://contoso.com:8080/index/".
    if (prefixes == null || prefixes.Length == 0)
      throw new ArgumentException("prefixes");
    
    // Create a listener.
    HttpListener listener = new HttpListener();
    // Add the prefixes.
    foreach (string s in prefixes)
    {
        listener.Prefixes.Add(s);
    }
    listener.Start();
    Console.WriteLine("Listening...");
    // Note: The GetContext method blocks while waiting for a request. 
    HttpListenerContext context = listener.GetContext();
    HttpListenerRequest request = context.Request;
    // Obtain a response object.
    HttpListenerResponse response = context.Response;
    // Construct a response.
    string responseString = "<HTML><BODY> Hello world!</BODY></HTML>";
    byte[] buffer = System.Text.Encoding.UTF8.GetBytes(responseString);
    // Get a response stream and write the response to it.
    response.ContentLength64 = buffer.Length;
    System.IO.Stream output = response.OutputStream;
    output.Write(buffer,0,buffer.Length);
    // You must close the output stream.
    output.Close();
    listener.Stop();
}
Public Shared Sub SimpleListenerExample(prefixes As String())
    If Not HttpListener.IsSupported Then
        Console.WriteLine("Windows XP SP2 or Server 2003 is required to use the HttpListener class.")
        Return
    End If
    ' URI prefixes are required,
    ' for example "http://contoso.com:8080/index/".
    If prefixes Is Nothing Or prefixes.Length = 0 Then
        Throw New ArgumentException("prefixes")
    End If

    ' Create a listener
    Dim listener = New HttpListener()

    For Each s As String In prefixes
        listener.Prefixes.Add(s)
    Next
    listener.Start()
    Console.WriteLine("Listening...")
    ' Note: The GetContext method blocks while waiting for a request.
    Dim context As HttpListenerContext = listener.GetContext()
    Console.WriteLine("Listening...")
    ' Obtain a response object
    Dim request As HttpListenerRequest = context.Request
    ' Construct a response.
    Dim response As HttpListenerResponse = context.Response
    Dim responseString As String = "<HTML><BODY> Hello world!</BODY></HTML>"
    Dim buffer As Byte() = System.Text.Encoding.UTF8.GetBytes(responseString)
    ' Get a response stream and write the response to it.
    response.ContentLength64 = buffer.Length
    Dim output As System.IO.Stream = response.OutputStream
    output.Write(buffer, 0, buffer.Length)
    'You must close the output stream.
    output.Close()
    listener.Stop()
End Sub

Comentarios

El Content-Length encabezado expresa la longitud, en bytes, de los datos de cuerpo de la respuesta.The Content-Length header expresses the length, in bytes, of the response's body data. Cuando mediante un formato que no envía los datos fragmentados o sin procesar, debe establecer el ContentLength64 propiedad.When using a format that does not send the data chunked or raw, you must set the ContentLength64 property. Si no, el HttpListener no envía los datos de respuesta.If you do not, the HttpListener does not send the response data.

Para obtener una lista completa de los encabezados de respuesta, consulte el HttpResponseHeader enumeración.For a complete list of response headers, see the HttpResponseHeader enumeration.

Se aplica a

Consulte también: