Allows to reply a message using ERR message type.
Sends a error reply to message received identified by msg_no_rpy. This function does the same as vortex_channel_send_rpy but sending a ERR frame, so take a look to its documentation.
NOTE vortex_channel_send_err is provided to enable sending BEEP ERR frames which may or may not include XML content, just like RPY or MSG type. This depends on the profile you are implementing.
Because of this, vortex_channel_send_err can't receive the error code and the message because it has to provide a more general API, for example, to send binary error messages.
In other words, if you want to use the error reply format used for BEEP channel 0 (and some other standard profiles) you will have to use vortex_frame_get_error_message and then provide the message created to vortex_channel_send_err.