--pause-metadata[=true|false]
Pause downloads created as a result of metadata
download. There are 3 types of metadata
downloads in aria2: (1) downloading .torrent
file. (2) downloading torrent metadata using
magnet link. (3) downloading metalink file.
These metadata downloads will generate downloads
using their metadata. This option pauses these
subsequent downloads. This option is effective
only when --enable-rpc=true is given.