DKNet

Configure HSTS and HTTPS redirection

Part of DKNet.AspCore.Extensions. AddHttpsConfig registers HSTS options and the feature marker. UseHttpsConfig installs HSTS followed by HTTPS redirection when marked. It supplies no TLS certificate or HTTPS listener.

using DKNet.AspCore.Extensions.Hosting;
var builder = WebApplication.CreateBuilder(args);
builder.Services.AddHttpsConfig(builder.Configuration);
var app = builder.Build();
app.UseHttpsConfig();
Console.WriteLine("HttpsConfig pipeline configured.");

Configure HSTS and HTTPS redirection: the host registers settings and the matching Use method installs middleware only when its feature marker exists.

⚙️ Configuration reference

Input	Type	Default	Effect
`Https:HstsMaxAgeDays`	number	365	Default HSTS MaxAge; includes subdomains and enables preload at 365 days or more.
`configureOptions`	`Action<HstsOptions>?`	null	Replaces the helper’s HSTS defaults with the supplied framework options callback.

⚠️ Gotchas & limits

The callback branch does not apply the helper’s IncludeSubDomains or preload calculation.
Behind a proxy, configure forwarded scheme handling before redirection.
The helper calls HSTS whenever marked; it contains no Development-environment condition of its own.

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