This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The RTCSctpTransport interface provides information which describes a Stream Control Transmission Protocol (SCTP) transport. This provides information about limitations of the transport, but also provides a way to access the underlying Datagram Transport Layer Security (DTLS) transport over which SCTP packets for all of an RTCPeerConnection's data channels are sent and received.

You don't create RTCSctpTransport objects yourself; instead, you get access to the RTCSctpTransport for a given RTCPeerConnection through its sctp property.

Possibly the most useful property on this interface is its maxMessageSize property, which you can use to determine the upper limit on the size of messages you can send over a data channel on the peer connection.


The RTCSctpTransport interface doesn't inherit any properties.

RTCSctpTransport.maxMessageSize Read only
An integer value indicating the maximum size, in bytes, of a message which can be sent using the RTCDataChannel.send() method.
RTCSctpTransport.transport Read only
An RTCDtlsTransport object representing the DTLS transport used for the transmission and receipt of data packets.


The RTCSessionDescription doesn't inherit any methods and has no methods of its own.




Specification Status Comment
WebRTC 1.0: Real-time Communication Between Browser
The definition of 'RTCSctpTransport' in that specification.
Working Draft Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support ? No support No support ? ?
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? ? No support No support ? ?

See also

Document Tags and Contributors

 Contributors to this page: Sheppy
 Last updated by: Sheppy,