Improved error handling if connection to server could not be established

Signed-off-by: Daniel Klein <daniel.klein@em.ag>

Author: dk-emag

aas_http_client/classes/client/aas_client.py

@@ -145,6 +145,8 @@ def get_root(self) -> dict | None:
 
         self.set_token()
 
+        error_messages: dict[int, str] = {}
+
         for url in urls:
             _logger.debug(f"Testing connectivity with URL: {url}")
             try:
@@ -155,10 +157,14 @@ def get_root(self) -> dict | None:
                     content = response.content.decode("utf-8")
                     return json.loads(content)
 
+                if response.status_code not in (STATUS_CODE_200, STATUS_CODE_201, STATUS_CODE_204):
+                    content = response.content.decode("utf-8")
+                    error_messages.update({response.status_code: content})
+
             except requests.exceptions.RequestException as e:
                 _logger.error(f"Error call REST API: {e}")
 
-        return None
+        raise ConnectionError(f"Failed to connect to AAS server API. Error messages: {error_messages}")
 
     def set_token(self) -> str | None:
         """Set authentication token in session headers based on configured authentication method.

docs/CHANGELOG.md

@@ -1,6 +1,10 @@
 # 📝 Changelog
 
-## [1.1.6] - 2026-06-11
+## [1.1.7] - 2026-06-25
+
+* 🚀Improvement: Improved error handling if connection to server could not be established
+
+## [1.1.6] - 2026-06-25
 
 * 🚀Improvement: Improved configuration model validation in creation of the client and the wrapper and allow using alias and internal name
 

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "aas-http-client"
-version = "1.1.6"
+version = "1.1.7"
 description = "Flexible Python HTTP client for communication with various types of AAS servers."
 readme = "README.md"
 license = { file = "LICENSE" }