public PreviewDetectMiddleware(
RequestDelegate next,
PreviewDetectOptions options)
{
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
options.AssertValid();
_next = next ?? throw new ArgumentNullException(nameof(next));
_options = options;
}
/// <summary>
/// Adds middleware that detects requests from preview bots/services and redirects to the specified page.
/// </summary>
public static IApplicationBuilder UsePreviewDetector(this IApplicationBuilder app, PreviewDetectOptions options)
{
if (app == null)
{
throw new ArgumentNullException(nameof(app));
}
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
options.AssertValid();
return(app.UseMiddleware <PreviewDetectMiddleware>(options));
}
