RobotsTxtCore 1.0.0

RobotsTxtMiddleware

A Robots.txt middleware for ASP.NET Core. Why is this needed you ask? Because if you need to add dynamic values (such as a configured url from your CMS) you'll need some sort of code to handle that, and this makes it easy.

Usage

To specify multiple rules with the fluent interface makes it really easy.

    app.UseRobotsTxt(builder =>
        builder
            .AddSection(section => 
                section
                    .AddComment("Allow Googlebot")
                    .AddUserAgent("Googlebot")
                    .Allow("/")
                )
            .AddSection(section => 
                section
                    .AddComment("Disallow the rest")
                    .AddUserAgent("*")
                    .AddCrawlDelay(TimeSpan.FromSeconds(10))
                    .Disallow("/")
                )
            .AddSitemap("https://example.com/sitemap.xml")
    );

Output

# Allow Googlebot
User-agent: Googlebot
Allow: /

# Disallow the rest
User-agent: *
Disallow: /
Crawl-delay: 10

Sitemap: https://example.com/sitemap.xml

Or if you just want to deny everyone.

    app.UseRobotsTxt(builder =>
        builder
            .DenyAll()
    );

Output

User-agent: *
Disallow: /