add new docs version 7.10.x

docs/versioned_docs/version-7.10.x/features/endpoints.md

@@ -0,0 +1,47 @@
+---
+id: endpoints
+title: Endpoints
+---
+
+OAuth2 Proxy responds directly to the following endpoints. All other endpoints will be proxied upstream when authenticated. The `/oauth2` prefix can be changed with the `--proxy-prefix` config variable.
+
+- /robots.txt - returns a 200 OK response that disallows all User-agents from all paths; see [robotstxt.org](http://www.robotstxt.org/) for more info
+- /ping - returns a 200 OK response, which is intended for use with health checks
+- /ready - returns a 200 OK response if all the underlying connections (e.g., Redis store) are connected
+- /metrics - Metrics endpoint for Prometheus to scrape, serve on the address specified by `--metrics-address`, disabled by default
+- /oauth2/sign_in - the login page, which also doubles as a sign-out page (it clears cookies)
+- /oauth2/sign_out - this URL is used to clear the session cookie
+- /oauth2/start - a URL that will redirect to start the OAuth cycle
+- /oauth2/callback - the URL used at the end of the OAuth cycle. The oauth app will be configured with this as the callback url.
+- /oauth2/userinfo - the URL is used to return user's email from the session in JSON format.
+- /oauth2/auth - only returns a 202 Accepted response or a 401 Unauthorized response; for use with the [Nginx `auth_request` directive](../configuration/integration#configuring-for-use-with-the-nginx-auth_request-directive)
+- /oauth2/static/\* - stylesheets and other dependencies used in the sign_in and error pages
+
+### Sign out
+
+To sign the user out, redirect them to `/oauth2/sign_out`. This endpoint only removes oauth2-proxy's own cookies, i.e. the user is still logged in with the authentication provider and may automatically re-login when accessing the application again. You will also need to redirect the user to the authentication provider's sign-out page afterward using the `rd` query parameter, i.e. redirect the user to something like (notice the url-encoding!):
+
+```
+/oauth2/sign_out?rd=https%3A%2F%2Fmy-oidc-provider.example.com%2Fsign_out_page
+```
+
+Alternatively, include the redirect URL in the `X-Auth-Request-Redirect` header:
+
+```
+GET /oauth2/sign_out HTTP/1.1
+X-Auth-Request-Redirect: https://my-oidc-provider/sign_out_page
+...
+```
+
+(The "sign_out_page" should be the [`end_session_endpoint`](https://openid.net/specs/openid-connect-session-1_0.html#rfc.section.2.1) from [the metadata](https://openid.net/specs/openid-connect-discovery-1_0.html#ProviderConfig) if your OIDC provider supports Session Management and Discovery.)
+
+BEWARE that the domain you want to redirect to (`my-oidc-provider.example.com` in the example) must be added to the [`--whitelist-domain`](../configuration/overview) configuration option otherwise the redirect will be ignored. Make sure to include the actual domain and port (if needed) and not the URL (e.g "localhost:8081" instead of "http://localhost:8081").
+
+### Auth
+
+This endpoint returns 202 Accepted response or a 401 Unauthorized response.
+
+It can be configured using the following query parameters:
+- `allowed_groups`: comma separated list of allowed groups
+- `allowed_email_domains`: comma separated list of allowed email domains
+- `allowed_emails`: comma separated list of allowed emails