coderef

WebRTC SCTP informationBaseline · Widely available

The sctp object on RTCPeerConnection represents the negotiated SCTP transport. SCTP (Stream Control Transmission Protocol) is the protocol that RTCDataChannel uses.

Supported in all major browsers for at least 30 months — safe to use without fallbacks. Baseline since May 9, 2023. Widely available since Nov 9, 2025.

How to use ↓Compare browsers

Browser support

DesktopChrome
1–75Not supported
76+Supportedsince Jul 30, 2019
Current: 155
Edge
12–18Not supported
79+Supportedsince Jan 15, 2020
Current: 154
Firefox
1–112Not supported
113+Supportedsince May 9, 2023
Current: 157
Safari
1–15.3Not supported
15.4+Supportedsince Mar 14, 2022
Current: 27
MobileChrome Android
18–75Not supported
76+Supportedsince Jul 30, 2019
Current: 155
Firefox Android
4–112Not supported
113+Supportedsince May 9, 2023
Current: 157
Safari iOS
1–15.3Not supported
15.4+Supportedsince Mar 14, 2022
Current: 27

How to use

This feature is Baseline widely available — use it freely, no fallback needed.

Example

Full syntax and examples are on MDN: sctp.

Feature detection

JS · check before using
if ("RTCSctpTransport" in globalThis) {
  // RTCSctpTransport is available
} else {
  // load a polyfill or use a fallback
}

Documentation (MDN)

Specification

Sub-features

Support for each part of the feature (7). The overall table above shows when the whole feature works.

Sub-featureChromeEdgeFirefoxSafariChrome AndroidFirefox AndroidSafari iOS
RTCPeerConnection.sctp767911315.47611315.4
RTCSctpTransport767911315.47611315.4
RTCSctpTransport.maxChannels767911315.47611315.4
RTCSctpTransport.maxMessageSize767911315.47611315.4
RTCSctpTransport.state767911315.47611315.4
RTCSctpTransport.statechange_event767911315.47611315.4
RTCSctpTransport.transport767911315.47611315.4