Set options on {handle}: "callback" the channel callback "timeout" default read timeout in msec "mode" mode for the whole channel See ch_open() for more explanation. {handle} can be a Channel or a Job that has a Channel.

Note that changing the mode may cause queued messages to be lost.

These options cannot be changed: "waittime" only applies to ch_open()

Can also be used as a method:

GetChannel()->ch_setoptions(options)