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HttpClientHandler.ServerCertificateCustomValidationCallback Propiedad

Definición

Obtiene o establece un método de devolución de llamada para validar el certificado de servidor.

public:
 property Func<System::Net::Http::HttpRequestMessage ^, System::Security::Cryptography::X509Certificates::X509Certificate2 ^, System::Security::Cryptography::X509Certificates::X509Chain ^, System::Net::Security::SslPolicyErrors, bool> ^ ServerCertificateCustomValidationCallback { Func<System::Net::Http::HttpRequestMessage ^, System::Security::Cryptography::X509Certificates::X509Certificate2 ^, System::Security::Cryptography::X509Certificates::X509Chain ^, System::Net::Security::SslPolicyErrors, bool> ^ get(); void set(Func<System::Net::Http::HttpRequestMessage ^, System::Security::Cryptography::X509Certificates::X509Certificate2 ^, System::Security::Cryptography::X509Certificates::X509Chain ^, System::Net::Security::SslPolicyErrors, bool> ^ value); };
[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
public Func<System.Net.Http.HttpRequestMessage,System.Security.Cryptography.X509Certificates.X509Certificate2?,System.Security.Cryptography.X509Certificates.X509Chain?,System.Net.Security.SslPolicyErrors,bool>? ServerCertificateCustomValidationCallback { get; set; }
public Func<System.Net.Http.HttpRequestMessage,System.Security.Cryptography.X509Certificates.X509Certificate2,System.Security.Cryptography.X509Certificates.X509Chain,System.Net.Security.SslPolicyErrors,bool> ServerCertificateCustomValidationCallback { get; set; }
[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
member this.ServerCertificateCustomValidationCallback : Func<System.Net.Http.HttpRequestMessage, System.Security.Cryptography.X509Certificates.X509Certificate2, System.Security.Cryptography.X509Certificates.X509Chain, System.Net.Security.SslPolicyErrors, bool> with get, set
member this.ServerCertificateCustomValidationCallback : Func<System.Net.Http.HttpRequestMessage, System.Security.Cryptography.X509Certificates.X509Certificate2, System.Security.Cryptography.X509Certificates.X509Chain, System.Net.Security.SslPolicyErrors, bool> with get, set
Public Property ServerCertificateCustomValidationCallback As Func(Of HttpRequestMessage, X509Certificate2, X509Chain, SslPolicyErrors, Boolean)

Valor de propiedad

Método de devolución de llamada para validar el certificado de servidor.

Atributos

Ejemplos

En el ejemplo de código siguiente se muestra el certificado de servidor.

static async Task Main()
{
    // Create an HttpClientHandler object and set to use default credentials
    HttpClientHandler handler = new HttpClientHandler();

    // Set custom server validation callback
    handler.ServerCertificateCustomValidationCallback = ServerCertificateCustomValidation;

    // Create an HttpClient object
    HttpClient client = new HttpClient(handler);

    // Call asynchronous network methods in a try/catch block to handle exceptions
    try
    {
        HttpResponseMessage response = await client.GetAsync("https://docs.microsoft.com/");

        response.EnsureSuccessStatusCode();

        string responseBody = await response.Content.ReadAsStringAsync();
        Console.WriteLine($"Read {responseBody.Length} characters");
    }
    catch (HttpRequestException e)
    {
        Console.WriteLine("\nException Caught!");
        Console.WriteLine($"Message: {e.Message} ");
    }

    // Need to call dispose on the HttpClient and HttpClientHandler objects
    // when done using them, so the app doesn't leak resources
    handler.Dispose();
    client.Dispose();
}

private static bool ServerCertificateCustomValidation(HttpRequestMessage requestMessage, X509Certificate2? certificate, X509Chain? chain, SslPolicyErrors sslErrors)
{
    // It is possible to inspect the certificate provided by the server.
    Console.WriteLine($"Requested URI: {requestMessage.RequestUri}");
    Console.WriteLine($"Effective date: {certificate?.GetEffectiveDateString()}");
    Console.WriteLine($"Exp date: {certificate?.GetExpirationDateString()}");
    Console.WriteLine($"Issuer: {certificate?.Issuer}");
    Console.WriteLine($"Subject: {certificate?.Subject}");

    // Based on the custom logic it is possible to decide whether the client considers certificate valid or not
    Console.WriteLine($"Errors: {sslErrors}");
    return sslErrors == SslPolicyErrors.None;
}

Comentarios

ServerCertificateCustomValidationCallback se puede usar para obtener y validar el certificado de servidor.

Se aplica a