retreive real client IP

app/routes.py

@@ -33,8 +33,8 @@ def upload_dump():
     log = open(LOG_FILENAME, "a")
     now = datetime.datetime.now()
     fulltime = now.isoformat()
-    # shorttime= now.replace(microsecond=0).isoformat()
-    remote_addr = request.remote_addr  # client addr
+    # client addr:
+    remote_addr = request.environ.get("HTTP_X_FORWARDED_FOR", request.remote_addr)
     log.write("{} request from {}\n".format(fulltime, remote_addr))
     # Avec seulement alphanum et tiret:
     clean_deptname = re.sub(r"[^A-Za-z-]", "", request.form["dept_name"])