Previously, we categorized options that can be used in
aria2.changeOption RPC method into 2 categories. The options in one
category can be applied on the fly, meaning that download continues to
be active while applying options. Another category includes options
which are only applicable when downloads are waiting or paused.
In this change, when active download is ordered to change options
which only applicable in waiting or paused state, it is now paused,
and then automatically restarted. Although we have limited number of
download concurrency, the pause and restart is done atomically, and
the download is inserted at the front of the queue, it is picked up
immediately if the concurrency regulation allows.
Options for -i list, except for PREF_CHECKSUM, PREF_DIR, PREF_DRY_RUN,
PREF_INDEX_OUT, PREF_LOWEST_SPEED_LIMIT,
PREF_MAX_CONNECTION_PER_SERVER, PREF_METALINK_BASE_URI, PREF_OUT,
PREF_PIECE_LENGTH, PREF_SELECT_FILE, PREF_SPLIT, PREF_PAUSE and
PREF_PARAMETERIZED_URI, are available in aria2.changeOption if the
download is waiting state, including paused downloads.
Tatsuhiro Tsujikawa