Accept full-file responses for small ModelScope objects

mirror_worker.py

@@ -101,7 +101,10 @@ def direct_download(path: str, target: Path, size: int, expected_sha256: str | N
                     try:
                         headers = {"Range": f"bytes={start}-{end}"}
                         with client.stream("GET", url, headers=headers) as response:
-                            if response.status_code != 206:
+                            full_file_response = start == 0 and end == size - 1
+                            if response.status_code != 206 and not (
+                                response.status_code == 200 and full_file_response
+                            ):
                                 raise RuntimeError(f"range {start}-{end}: HTTP {response.status_code}")
                             offset = start
                             for chunk in response.iter_bytes(4 * 1024 * 1024):