WebTransportError: streamErrorCode property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

Note: This feature is available in Web Workers.

The streamErrorCode read-only property of the WebTransportError interface returns a number in the range 0-255 indicating the application protocol error code for this error, or null if one is not available.

Value

A number, or null.

Examples

js
const url = "not-a-url";

async function initTransport(url) {
  try {
    // Initialize transport connection
    const transport = new WebTransport(url);

    // The connection can be used once ready fulfills
    await transport.ready;

    // ...
  } catch (error) {
    const msg = `Transport initialization failed.
                 Reason: ${error.message}.
                 Source: ${error.source}.
                 Error code: ${error.streamErrorCode}.`;
    console.log(msg);
  }
}

Specifications

Specification
WebTransport
# dom-webtransporterror-streamerrorcode

Browser compatibility

BCD tables only load in the browser

See also