update related to http_x_remote_user

Server-Diagnostics---Troubleshooting.md

@@ -52,8 +52,8 @@ sudo -u radicale /usr/bin/radicale --logging-level debug
 
 Example:
 
-```
-netstat -nlpt |grep ":5232 "
+```bash
+netstat -nlpt | grep ":5232 "
 tcp        0      0 127.0.0.1:5232          0.0.0.0:*               LISTEN      4117/python3        
 tcp6       0      0 ::1:5232                :::*                    LISTEN      4117/python3       
 ```
@@ -69,7 +69,7 @@ Direct connection tests, for tests via reverse proxy see [Reverse-Proxy-Diagnost
 
 ### Redirect to landing page
 
-```
+```bash
 curl http://localhost:5232/
 ```
 
@@ -81,7 +81,7 @@ Redirected to /.web
 
 ### WebUI
 
-```
+```bash
 curl http://localhost:5232/.web/
 ```
 
@@ -96,16 +96,26 @@ Successful result depends on auth and permission
 
 ### Without authentication
 
-```
+```bash
 curl -s --request PROPFIND http://localhost:5232/
 Access to the requested resource forbidden.
 ```
 
+### With authentication on reverse proxy
+
+auth: http_x_remote_user
+
+```bash
+curl -H "X-Remote-User: USER" --request PROPFIND http://localhost:5232/
+```
+
+Should return in successful response of the particular USER content
+
 ### With authentication
 
 #### Depth: 0
 
-```
+```bash
 curl -s --header 'Depth: 0' --request PROPFIND -u USER1:USERPASS1 http://localhost:5232/ | xmllint --format - | grep "<href>"
 ```
 
@@ -119,7 +129,7 @@ Successful result:
 
 #### Depth: 1 
 
-```
+```bash
 curl -s --header 'Depth: 1' --request PROPFIND -u USER1:USERPASS1 http://localhost:5232/ | xmllint --format - | grep "<href>"
 ```
 
@@ -134,7 +144,7 @@ Successful result:
 
 (example)
 
-```
+```bash
 curl -s --header 'Depth: 1' --request PROPFIND -u USER1:USERPASS1 http://localhost:5232/USER1/ | xmllint --format - | grep -E "(^    <href>|displayname|C:calendar-description)"
 ```