SCTP plugin design
- cb_rcv_sctp_message: receive SCTP message
- cb_snd_sctp_message: send SCTP DATA message to the specified peer
- sctp_process_message: parse SIP message in the SCTP data chunk and place the message to IMP thread’s FIFO queue.
- sctp_log_event: log SIP events to the console if running in debug mode