[DOC] add some informations about 'stats' and 'option httpclose'.

doc/haproxy-en.txt

@@ -2347,33 +2347,35 @@ Example :
     # simple application with authenticated embedded status report
     listen app1 192.168.1.100:80
         mode http
+        option httpclose
         balance roundrobin
         cookie SERVERID postonly insert indirect
         server srv1 192.168.1.1:8080 cookie srv1 check inter 1000
         server srv1 192.168.1.2:8080 cookie srv2 check inter 1000
         stats uri /my_stats
-	stats realm Statistics\ for\ MyApp1-2
-	stats auth guest:guest
-	stats auth admin:AdMiN123
-	stats scope .
-	stats scope app2
+        stats realm Statistics\ for\ MyApp1-2
+        stats auth guest:guest
+        stats auth admin:AdMiN123
+        stats scope .
+        stats scope app2
 
     # simple application with anonymous embedded status report
     listen app2 192.168.2.100:80
         mode http
+        option httpclose
         balance roundrobin
         cookie SERVERID postonly insert indirect
         server srv1 192.168.2.1:8080 cookie srv1 check inter 1000
         server srv1 192.168.2.2:8080 cookie srv2 check inter 1000
         stats uri /my_stats
-	stats realm Statistics\ for\ MyApp2
-	stats scope .
+        stats realm Statistics\ for\ MyApp2
+        stats scope .
 
     listen admin_page :8080
         mode http
         stats uri /my_stats
-	stats realm Global\ statistics
-	stats auth admin:AdMiN123
+        stats realm Global\ statistics
+        stats auth admin:AdMiN123
 
 Notes :
 -------
@@ -2388,6 +2390,11 @@ Notes :
     remove it from the browser so it will be sent to the whole application
     upon further accesses.
 
+  - It is very important that the 'option httpclose' is specified, otherwise
+    the proxy will not be able to detect the URI within keep-alive sessions
+    maintained between the browser and the servers, so the stats URI will be
+    forwarded unmodified to the server as if the option was not set.
+
 
 =========================
 | System-specific setup |