sctp property
      
      RTCSctpTransport?
      get
      sctp
      
    
    
The sctp read-only property of the RTCPeerConnection interface
returns an RTCSctpTransport describing the  transport over which SCTP
data is being sent and received.
If SCTP hasn't been negotiated, this value is null.
The SCTP transport is used for transmitting and receiving data for any and all RTCDataChannels on the peer connection.
Implementation
external RTCSctpTransport? get sctp;