int vortex_channel_get_next_msg_no ( VortexChannel channel)

Returns the next message number to be used on this channel.

This message number is the one used to message sent. This have nothing to do with next message number expected.

This function is used by the Vortex Library for its internal process to figure out what message number to use on next sending request.

channelthe channel to work on
the message number or -1 if fail