Wrap additional network errors in factor download

factor_attribution.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import http.client
 import io
 import socket
 import ssl
@@ -35,7 +36,16 @@ def _download_kf_zip_bytes() -> bytes:
     try:
         with urlopen(request, timeout=30) as response:
             return response.read()
-    except (URLError, TimeoutError, ConnectionError, socket.timeout, ssl.SSLError) as exc:
+    except (
+        URLError,
+        TimeoutError,
+        ConnectionError,
+        socket.timeout,
+        socket.gaierror,
+        ssl.SSLError,
+        http.client.IncompleteRead,
+        http.client.RemoteDisconnected,
+    ) as exc:
         raise ExternalFactorDownloadError(f"Failed to download external factor data: {exc}") from exc