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feat: redirect www.essentialcsharp.com to apex domain #1109

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Merged
BenjaminMichaelis merged 2 commits into from
May 16, 2026
Merged

feat: redirect www.essentialcsharp.com to apex domain #1109

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5f422e0
feat: redirect www.essentialcsharp.com to apex domain
BenjaminMichaelis May 15, 2026
d053d3e
fix: harden www redirect against open redirect
BenjaminMichaelis May 16, 2026
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14 changes: 14 additions & 0 deletions EssentialCSharp.Web/Program.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -493,6 +493,20 @@
app.UseSecurityHeadersMiddleware(new SecurityHeadersBuilder()
.AddDefaultSecurePolicy()
.AddContentSecurityPolicy(csp));

// Redirect www.essentialcsharp.com → essentialcsharp.com (permanent 301)
// Must be after UseForwardedHeaders so the Host header reflects the real hostname.
app.Use(async (context, next) =>
{
if (context.Request.Host.Host.StartsWith("www.", StringComparison.OrdinalIgnoreCase))
{
string apexHost = context.Request.Host.Host[4..];
string redirectUrl = $"{context.Request.Scheme}://{apexHost}{context.Request.PathBase}{context.Request.Path}{context.Request.QueryString}";
context.Response.Redirect(redirectUrl, permanent: true);

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Fixed
return;
}
await next(context);
});
}
else
{
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