This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

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 Browsers
The definition of 'RTCSctpTransport' in that specification.
Candidate Recommendation Initial definition.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support ? ? No No ? ?
maxMessageSize ? ? No No ? ?
transport ? ? No No ? ?
onstatechange ? ? ? ? ? ?
state ? ? ? ? ? ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support ? ? ? No ? ? ?
maxMessageSize ? ? ? No ? ? ?
transport ? ? ? No ? ? ?
onstatechange ? ? ? ? ? ? ?
state ? ? ? ? ? ? ?

See also

Document Tags and Contributors

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