AspNetCore.Docs/aspnetcore/fundamentals/host
Luke Latham 8031f63a22 Surface Forward Headers in ext auth provider topics (#9554)
Fixes #9549 

* Not a full UE pass on the group of external provider topics ... don't quite have time for that right now. However, I do hit a number of small UE-type updates.
* Engineering: You only need to look at one thing here: See the *forwarded-headers-middleware.md* file. The content of the file is below. The INCLUDE is linked into the external auth provider topics to surface Forwarded Headers Middleware (proxy/LB topic).

> \#\# Forward request information with a proxy or load balancer
>
> If the app is deployed behind a proxy server or load balancer, some of the original request information might be forwarded to the app in request headers. This information usually includes the secure request scheme (\`https\`), host, and client IP address. Apps don't automatically read these request headers to discover and use the original request information.
>
> The scheme is used in link generation that affects the authentication flow with external providers. Losing the secure scheme (\`https\`) results in the app generating incorrect insecure redirect URLs.
>
> Use Forwarded Headers Middleware to make the original request information available to the app for request processing.
>
> For more information, see \<xref:host-and-deploy/proxy-load-balancer>.

If it's easier to provide feedback in a comment here over hunting down the file on the diff, that works for me.
2018-11-14 15:58:01 -06:00
..
generic-host Exclude Bin and Obj from CopyToOutputDirectory (#9508) 2018-11-07 19:12:50 -06:00
hosted-services/samples/2.x delete map and min files (#9310) 2018-10-31 14:26:48 -10:00
platform-specific-configuration delete map and min files (#9310) 2018-10-31 14:26:48 -10:00
generic-host.md Surface Forward Headers in ext auth provider topics (#9554) 2018-11-14 15:58:01 -06:00
hosted-services.md IHostedService StopAsync cancellationToken updates (#9555) 2018-11-14 15:43:07 -06:00
index.md Hosting startup topic updates (#7678) 2018-08-31 11:54:45 -05:00
platform-specific-configuration.md Table of Contents reorg (#9133) 2018-10-26 18:34:40 -10:00
web-host.md Version the 1.1 PDF of the Kestrel and Web Host topics (#9567) 2018-11-12 16:44:39 -10:00