PYTHON-3800 Add lower() to node when validate hosts of srv records (#…

…1289)
mongodb · Jul 5, 2023 · 7d7118b · 7d7118b
1 parent 966a5ad
commit 7d7118b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pymongo/srv_resolver.py b/pymongo/srv_resolver.py
@@ -118,7 +118,7 @@ def _get_srv_response_and_hosts(
         # Validate hosts
         for node in nodes:
             try:
-                nlist = node[0].split(".")[1:][-self.__slen :]
+                nlist = node[0].lower().split(".")[1:][-self.__slen :]
             except Exception:
                 raise ConfigurationError(f"Invalid SRV host: {node[0]}")
             if self.__plist != nlist: