made session fetching more clear, fixed a bug with lcdict

Author: RealFloorIsJava

src/nussschale/handler.py

@@ -122,20 +122,15 @@ def do_heartbeat() -> None:
                 exit(1)
 
     def fetch_session(self) -> Tuple[Session, bool]:
-        # Find the session cookie (if any)
-        cookie_hdr = ""
-        try:
-            cookie_hdr = self._str_headers["cookie"]
-        except KeyError:
-            pass
-        cookie = SimpleCookie(cookie_hdr)  # type: ignore
-
-        # Extract the session ID
+        # Find the session cookie (if any) and extract the ID
         sid = None  # type: Optional[str]
-        try:
-            sid = cookie["session"].value
-        except KeyError:
-            pass
+        if "cookie" in self._str_headers:
+            cookie = SimpleCookie(self._str_headers["cookie"])  # type: ignore
+            if "session" in cookie:
+                sid = cookie["session"].value
+        if sid == "":
+            nlog().log("Empty session ID, reassigning...")
+            sid = None
 
         # Fetch (or create) the session
         session = Session.get_session(self.client_address[0], sid)

src/nussschale/util/lcdict.py

@@ -70,7 +70,7 @@ def __contains__(self, key: Any) -> bool:
             Whether the key is present.
         """
         assert isinstance(key, str), "key is no string"
-        return key in self._backing
+        return key.lower() in self._backing
 
     def __delitem__(self, key: str) -> None:
         """Deletes an item.