cf+http://container_name
    file:///some_dir
    ftp://user[:password]@other.host[:port]/some_dir
    hsi://user[:password]@other.host[:port]/some_dir
    imap://user[:password]@other.host[:port]/some_dir
    rsync://user[:password]@other.host[:port]::/module/some_dir
    rsync://user[:password]@other.host[:port]/relative_path
    rsync://user[:password]@other.host[:port]//absolute_path
    s3://other.host/bucket_name[/prefix]
    s3+http://bucket_name[/prefix]
    scp://user[:password]@other.host[:port]/some_dir
    ssh://user[:password]@other.host[:port]/some_dir
    tahoe://alias/directory
    webdav://user[:password]@other.host/some_dir
    webdavs://user[:password]@other.host/some_dir