extend torrent webseed lifetime to an hour

config.py

@@ -289,6 +289,7 @@ class DefaultConfig(object):
   BITTORRENT_PIECE_SIZE = 512 * 1024
   BITTORRENT_ANNOUNCE_URL = 'https://localhost:6881/announce'
   BITTORRENT_FILENAME_PEPPER = '3ae93fef-c30a-427e-9ba0-eea0fd710419'
+  BITTORRENT_WEBSEED_LIFETIME = 3600
 
   # "Secret" key for generating encrypted paging tokens. Only needed to be secret to
   # hide the ID range for production (in which this value is overridden). Should *not*

endpoints/verbs.py

@@ -137,7 +137,8 @@ def _torrent_for_storage(storage_ref, is_public):
 
   # Lookup the webseed path for the storage.
   path = model.storage.get_layer_path(storage_ref)
-  webseed = storage.get_direct_download_url(storage_ref.locations, path)
+  webseed = storage.get_direct_download_url(storage_ref.locations, path,
+                                            expires_in=app.config['BITTORRENT_WEBSEED_LIFETIME'])
   if webseed is None:
     # We cannot support webseeds for storages that cannot provide direct downloads.
     abort(make_response('Storage engine does not support seeding.', 501))