RTCError

The RTCError interface describes an error which has occurred while handling WebRTC operations. It's based upon the standard DOMException interface that describes general DOM errors.

Constructor

RTCError()

Creates and returns a new RTCError object initialized with the properties of the provided RTCErrorInit dictionary and, optionally, a string to use as the value of the error's message property.

Properties

In addition to the properties defined by the parent interface, DOMException, RTCError includes the following properties:

Examples

In this example, a handler is established for an RTCDataChannel's error event.

dataChannel.addEventListener("error", (event) => {
  let error = event.error;

  if (error.errorDetail === "sdp-syntax-error") {
    let errLine = error.sdpLineNumber;
    let errMessage = error.message;

    let alertMessage = `A syntax error occurred interpreting line ${errLine} of the SDP: ${errMessage}`;
    showMyAlertMessage("Data Channel Error", alertMessage);
  } else {
    terminateMyConnection();
  }
});

If the error is an SDP syntax error—indicated by its errorDetail property being sdp-syntax-error—, a message string is constructed to present the error message and the line number within the SDP at which the error occurred. This message is then displayed using a function called showMyAlertMessage(), which stands in for whatever output mechanism this code might use.

Any other error is treated as terminal, causing a terminateMyConnection() function to be called.

The above example uses addEventListener() to add the handler for error events. You can also use the RTCDataChannel object's onerror event handler property, like this:

dataChannel.onerror = (event) => {
  let error = event.error;

  /* and so forth */
};

Specifications

Browser compatibility

No compatibility data found. Please contribute data for "api.RTCError" (depth: 1) to the MDN compatibility data repository.