fix regex validation for url

src/backend/base/langflow/components/data/URL.py

@@ -44,14 +44,16 @@ class URLComponent(Component):
 
         # Basic URL validation regex
         url_regex = re.compile(
-            r"^(http://|https://)?"  # http:// or https://
-            r"(([a-zA-Z0-9\.-]+)"  # domain
-            r"(\.[a-zA-Z]{2,}))"  # top-level domain
-            r"(:[0-9]{1,5})?"  # optional port
-            r"(\/.*)?$"  # optional path
+            r"^(https?:\/\/)?"  # optional protocol
+            r"(www\.)?"  # optional www
+            r"([a-zA-Z0-9.-]+)"  # domain
+            r"(\.[a-zA-Z]{2,})?"  # top-level domain
+            r"(:\d+)?"  # optional port
+            r"(\/[^\s]*)?$",  # optional path
+            re.IGNORECASE
         )
 
-        if not re.match(url_regex, string):
+        if not url_regex.match(string):
             raise ValueError(f"Invalid URL: {string}")
 
         return string