/// <summary>
/// Sends an HTTP request to the inner handler to send to the server as an asynchronous operation.
/// </summary>
/// <param name="request">The HTTP request message to send to the server.</param>
/// <param name="cancellationToken">A cancellation token to cancel operation.</param>
/// <returns>
/// Returns <see cref="T:System.Threading.Tasks.Task`1" />. The task object representing the asynchronous operation.
/// </returns>
protected override Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
if (request == null)
{
throw new ArgumentNullException("request");
}
try
{
var principal = SignatureValidator.Validate(request, this.SharedSecretResolver, this.MaximumMessageAge);
if (this.ClaimsAuthenticationManager != null)
{
principal = this.ClaimsAuthenticationManager.Authenticate(request.RequestUri.ToString(), principal);
}
this.SetPrincipal(principal);
}
catch (UnauthorizedException)
{
return(Unauthorized());
}
catch (ForbiddenException fbex)
{
return(Forbidden(fbex.Message));
}
catch (PreconditionFailedException pcex)
{
return(PreconditionFailed(pcex.Message));
}
return(base.SendAsync(request, cancellationToken));
}
