APIs may to be implemented

usrsctp.setUDPPort
usrsctp.createSocket
socket.bind
socket.listen
socket.connect -> assoc
socket.send
socket.end/close
socket.on
- connect
- data
- end/close
- timeout
- drain
- error
assoc.socket
assoc.send
assoc.end/close
assoc.peeloff
assoc.on
- data
- message

usrsctp native apis:

init
socket
send
bind
bindx
listen
peeloff
connect
connectx
end
abort
close
finish