/// <inheritdoc cref="IResourceRequestFilter"/>
public virtual Task <bool> CanLoadResourceAsync(ResourceRequestContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (context.Url == null)
{
throw new ArgumentException("ResourceRequestContext.Url may not be null.", nameof(context));
}
if (!context.Url.IsAbsoluteUri)
{
throw new ArgumentException("ResourceRequestContext.Url must be absolute.", nameof(context));
}
var result = ValidSchemes.Contains(context.Url.Scheme) && ValidHosts.Contains(context.Url.Host);
if (!result)
{
OnResourceRejection(context);
}
return(Task.FromResult(result));
}
/// <summary>
/// Called when a resource is rejected to permit logging.
/// </summary>
/// <param name="context"><see cref="ResourceRequestContext"/> of the resource being rejected.</param>
public virtual void OnResourceRejection(ResourceRequestContext context)
{
}