This is an application level middleware solution for prerender.

• .NETStandard 1.6

• Download from Nuget:

Install-Package DotNetCoreOpen.PrerenderMiddleware

• Configuration File

  Add PrerenderConfiguration.json in your ASP.NET Core project by following below content format:

    {
         "PrerenderConfiguration": 
         {
             "ServiceUrl": "http://localhost:3000",
	     "Token": null,
	     "CrawlerUserAgentPattern": null,
	     "WhiteListPattern": null,
	     "BlackListPattern": "lib|css|js",
	     "AdditionalExtensionPattern": null,
	     "ProxyUrl": null,
	     "ProxyPort": 80
         }
    }

More configuration setting details, please go to Configuration & Check Priority

• Add code in startup.cs

  Step 1: Use AddPrerenderConfig() in ConfigurationBuilder

    var builder = new ConfigurationBuilder()
            .SetBasePath(env.ContentRootPath)
            .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
            .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true)
            // Prerender Step 1: Add Prerender configuration Json file.
            .AddPrerenderConfig() 
            .AddEnvironmentVariables();
  

  Step 2: Configure Configuration Option in ServiceCollections

    // Prerender Step 2: Add Options.
        services.AddOptions();
        services.ConfigureSection<PrerenderConfiguration>(Configuration);
  

  Step 3: Configure Prerender Middleware in IApplicationBuilder

        // Prerender Step 3: UsePrerender, before others.
        app.UsePrerender();	
  

You can download the sample project from:

https://github.com/dingyuliang/prerender-dotnet/tree/master/src/DotNetCorePrerender/DotNetCoreOpen.PrerenderMiddleware.Mvc

Test Page: ~/Home/About