Check if a channel is already created on the given connection.
This function allows to check if a channel is already created over this connection (or session). Channel number must be a positive integer starting from 0. Channel 0 is always opened and exists until connection (or session) is closed.
|connection ||vortex connection to check channel existence |
|channel_num ||channel number to check|
- TRUE if channel identified by channel_num exists, otherwise FALSE.