Bump version to v2.7.2 after migrate filename fix.

app.py

@@ -103,7 +103,7 @@ else:
     application_path = os.path.dirname(__file__)
 
 DATA_FILE = os.path.join(application_path, 'data.json')  # legacy JSON; used only for one-shot import / export
-CURRENT_VERSION = "v2.7.1"
+CURRENT_VERSION = "v2.7.2"
 RELEASES_REPO_URL = repo_url()
 RELEASES_API_LATEST = api_latest_url()
 BIN_DIR = os.environ.get('TUNNEL_BIN_DIR', os.path.join(application_path, 'bin'))
@@ -4205,13 +4205,19 @@ async def api_server_migrate_export(
 
         zip_bytes, summary = await asyncio.to_thread(_do_export)
         stamp = datetime.now(timezone.utc).strftime('%Y%m%dT%H%M%SZ')
-        safe_name = re.sub(r'[^\w.-]+', '_', server.get('name') or server.get('host') or 'server')
+        safe_name = _ascii_filename_component(
+            server.get('name') or server.get('host') or 'server',
+            fallback='server',
+        )
         filename = f'amnezia-migrate-{safe_name}-{stamp}.zip'
         headers = {
             'Content-Disposition': f'attachment; filename="{filename}"',
             'X-Migrate-Users': str(summary.get('users', 0)),
             'X-Migrate-Connections': str(summary.get('connections', 0)),
-            'X-Migrate-Protocols': ','.join(summary.get('protocols') or []),
+            'X-Migrate-Protocols': ','.join(
+                _ascii_filename_component(p, fallback='proto')
+                for p in (summary.get('protocols') or [])
+            ),
         }
         return StreamingResponse(io.BytesIO(zip_bytes), media_type='application/zip', headers=headers)
     except Exception as e: