/// <summary> /// Tries to find and assign an Umbraco document to a <c>PublishedRequest</c>. /// </summary> /// <param name="frequest">The <c>PublishedRequest</c>.</param> /// <returns>A value indicating whether an Umbraco document was found and assigned.</returns> /// <remarks>Optionally, can also assign the template or anything else on the document request, although that is not required.</remarks> public async Task <bool> TryFindContent(IPublishedRequestBuilder frequest) { if (!_umbracoContextAccessor.TryGetUmbracoContext(out var umbracoContext)) { return(false); } var route = frequest.Domain != null ? frequest.Domain.ContentId + DomainUtilities.PathRelativeToDomain(frequest.Domain.Uri, frequest.AbsolutePathDecoded) : frequest.AbsolutePathDecoded; IRedirectUrl?redirectUrl = await _redirectUrlService.GetMostRecentRedirectUrlAsync(route, frequest.Culture); if (redirectUrl == null) { if (_logger.IsEnabled(LogLevel.Debug)) { _logger.LogDebug("No match for route: {Route}", route); } return(false); } IPublishedContent?content = umbracoContext.Content?.GetById(redirectUrl.ContentId); var url = content == null ? "#" : content.Url(_publishedUrlProvider, redirectUrl.Culture); if (url.StartsWith("#")) { if (_logger.IsEnabled(LogLevel.Debug)) { _logger.LogDebug("Route {Route} matches content {ContentId} which has no URL.", route, redirectUrl.ContentId); } return(false); } // Appending any querystring from the incoming request to the redirect URL url = string.IsNullOrEmpty(frequest.Uri.Query) ? url : url + frequest.Uri.Query; if (_logger.IsEnabled(LogLevel.Debug)) { _logger.LogDebug("Route {Route} matches content {ContentId} with URL '{Url}', redirecting.", route, content?.Id, url); } frequest .SetRedirectPermanent(url) // From: http://stackoverflow.com/a/22468386/5018 // See http://issues.umbraco.org/issue/U4-8361#comment=67-30532 // Setting automatic 301 redirects to not be cached because browsers cache these very aggressively which then leads // to problems if you rename a page back to it's original name or create a new page with the original name .SetNoCacheHeader(true) .SetCacheExtensions(new List <string> { "no-store, must-revalidate" }) .SetHeaders(new Dictionary <string, string> { { "Pragma", "no-cache" }, { "Expires", "0" } }); return(true); }