RTCError: errorDetail property

Baseline 2026
Newly available

Since April 2026, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

The RTCError interface's read-only errorDetail property is a string indicating the WebRTC-specific error code that occurred.

Value

A read-only string whose value indicates the type of WebRTC-specific error that occurred on an RTCPeerConnection. The possible values are:

data-channel-failure

The connection's RTCDataChannel has failed.

dtls-failure

The negotiation of the DTLS connection failed, or the connection was terminated with a fatal error. The error's message contains details about the nature of the error. If a fatal error is received, the error object's receivedAlert property is set to the value of the DTLSL alert received. If, on the other hand, a fatal error was sent, the sentAlert is set to the alert's value.

fingerprint-failure

The remote certificate for the RTCDtlsTransport didn't match any of the fingerprints listed in the SDP. If the remote peer can't match the local certificate against the provided fingerprints, this error doesn't occur, though this situation may result instead in a dtls-failure error.

hardware-encoder-error

The hardware encoder doesn't support the given configuration parameters.

hardware-encoder-not-available

The hardware encoder resources required to accomplish the requested operation aren't available.

sctp-failure

The SCTP negotiation has failed, or the connection has terminated with a fatal error. The SCTP cause code can be found in the RTCError object's sctpCauseCode. SCTP error cause codes 1-13 are defined in the SCTP specification: RFC 4960, section 3.3.10.

sdp-syntax-error

The SDP syntax is invalid. The error's sdpLineNumber property indicates the line number within the SDP at which the error was detected.

Examples

tbd

Specifications

Specification
WebRTC: Real-Time Communication in Browsers
# dom-rtcerror-errordetail

Browser compatibility

desktop mobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
errorDetail
Chrome – Full support
Chrome 74 (Release date: 2019-04-23)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – Full support
Firefox 150 (Release date: 2026-04-21)
footnote Full support
Opera – Full support
Opera 60 (Release date: 2019-04-09)
footnote Full support
Safari – Full support
Safari 15.4 (Release date: 2022-03-14)
footnote Full support
Chrome Android – Full support
Chrome Android 74 (Release date: 2019-04-24)
footnote Full support
Firefox for Android – Full support
Firefox for Android 150 (Release date: 2026-04-21)
footnote Full support
Opera Android – Full support
Opera Android 53 (Release date: 2019-07-11)
footnote Full support
Safari on iOS – Full support
Safari on iOS 15.4 (Release date: 2022-03-14)
footnote Full support
Samsung Internet – Full support
Samsung Internet 11 (Release date: 2019-12-05)
footnote Full support
WebView Android – Full support
WebView Android 74 (Release date: 2019-04-24)
footnote Full support
WebView on iOS – Full support
WebView on iOS 15.4 (Release date: 2022-03-14)
footnote Full support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support