Overview

Documentation: https://learn.microsoft.com/en-us/aspnet/core/blazor/fundamentals/startup?view=aspnetcore-7.0

Program.cs

builder.Services.AddRazorPages();
builder.Services.AddServerSideBlazor(); // add Blazor services to the DI container
…
app.MapBlazorHub(); // set up an endpoint for the real-time communication w/browser (via SignalR)
app.MapFallbackToPage("/_Host"); // set the root page (Pages/_Host.cshtml) and enable nav; when no matching endpoint is found, route requests here

Controlling Headers

Use middleware to control the headers collection:

Program.cs
app.Use(async (context, next) =>
{
	context.Response.Headers.Add("Content-Security-Policy", "{POLICY STRING}");
	await next();
});