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Ensure a reverse-proxied ASP.NET Core application uses https
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| using System.Threading.Tasks; | |
| using Microsoft.AspNetCore.Builder; | |
| using Microsoft.AspNetCore.Http; | |
| namespace interval.Support { | |
| public class ReverseProxyHttpsEnforcer { | |
| private const string ForwardedProtoHeader = "X-Forwarded-Proto"; | |
| private readonly RequestDelegate _next; | |
| public ReverseProxyHttpsEnforcer(RequestDelegate next) { | |
| _next = next; | |
| } | |
| public async Task Invoke(HttpContext ctx) { | |
| var h = ctx.Request.Headers; | |
| if (h[ForwardedProtoHeader] == string.Empty || h[ForwardedProtoHeader] == "https") { | |
| await _next(ctx); | |
| } else if (h[ForwardedProtoHeader] != "https") { | |
| var withHttps = $"https://{ctx.Request.Host}{ctx.Request.Path}{ctx.Request.QueryString}"; | |
| ctx.Response.Redirect(withHttps); | |
| } | |
| } | |
| } | |
| public static class ReverseProxyHttpsEnforcerExtensions { | |
| public static IApplicationBuilder UseReverseProxyHttpsEnforcer(this IApplicationBuilder builder) { | |
| return builder.UseMiddleware<ReverseProxyHttpsEnforcer>(); | |
| } | |
| } | |
| } |
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