Reverse Proxy set up

Questions
1

Hello,

So I am trying to set up an umbraco 13 site in .net 8 with a reverse proxy. E.g mysite-frontend.com/path-test points to mybackendwebsite.com throught cloudflare.

I have set this up in my program.cs:

if (_config[“Proxy:SiteUrl”].Contains(“/path-test”))
{
app.Use((ctx, next) =>
{
var url = _config[“Proxy:CanonicalUrl”];
var canonical = url.StartsWith(“https://”)
? url.Substring(“https://”.Length)
: url;

    ctx.Request.Host = new HostString(canonical);
    ctx.Request.Scheme = "https";
    ctx.Request.PathBase = "/path-test";
    return next();
});
app.UsePathBase("/path-test");

}

However, this uses path-test twice. in all umbraco calls. If I remove ‘ctx.Request.PathBase = “/path-test”;’ then the calls work but no css loads on the front end. If I remove ‘app.UsePathBase(“/path-test”);’ then I cannot access umbraco but the front end works.

I have tried using this but it doesn’t seem to work with a path inside of it:

"Umbraco": {
  "CMS": {
    "WebRouting": {
      "UmbracoApplicationUrl": "http://www.mysite.com/"
    }
  }
}

Just wondering if anyone had any similar issues using a proxy. Any help would be very appreicated.

2

Hi Brandon,

With a reverse proxy I think you need to use forward headers.

builder.Services.Configure<ForwardedHeadersOptions>(options =>
{
    options.ForwardedHeaders = ForwardedHeaders.XForwardedProto | ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedHost;
});

 app.UseForwardedHeaders();
3

Hi Bo,

Thanks for this. I didn’t actually post my full configuration service but I have already added this and it still doesn’t work. Do you think the code I am using above could be interfering with it? Is their anything else you would know that would be needed to set up a proxy url