Netchannels.input_filter
An input_filter
filters the data read from it through the * io_obj_channel
(usually a pipe
after the data have been * retrieved from the passed in_obj_channel
. * * An input_filter
object never generates Buffer_underrun
exceptions. * However, if the passed in_obj_channel
or io_obj_channel
raises such * an exception, the exception will fall through the calling chain. * * If the filter is closed, the io_obj_channel
will be closed, too, * but not the source in_obj_channel
(so you can still read further * data from it).
inherit raw_in_channel
inherit compl_in_channel