FF154 Relnote: RTCDtlsTransport error event

Author: hamishwillee

files/en-us/mozilla/firefox/releases/154/index.md

@@ -50,11 +50,14 @@ Firefox 154 is the current [Beta version of Firefox](https://www.firefox.com/en-
 
 <!-- #### Removals -->
 
-<!-- ### APIs -->
+### APIs
 
 <!-- #### DOM -->
 
-<!-- #### Media, WebRTC, and Web Audio -->
+#### Media, WebRTC, and Web Audio
+
+- The [`error`](/en-US/docs/Web/API/RTCDtlsTransport/error_event) event is now fired on {{domxref("RTCDtlsTransport")}} to report DTLS and fingerprinting errors.
+  ([Firefox bug 1805447](https://bugzil.la/1805447)).
 
 <!-- #### Removals -->
 

files/en-us/web/api/rtcdtlstransport/error_event/index.md

@@ -46,12 +46,22 @@ Transport-level errors will have one of the following values for the specified e
 
 ## Examples
 
-In this example, the `onerror` event handler property is used to set the handler for the `error` event.
+Given an {{domxref("RTCPeerConnection")}}, `pc`, the following code handles a DTLS transport error:
 
 ```js
-transport.onerror = (ev) => {
+const dtlsTransport = pc.getSenders()[0].transport;
+
+dtlsTransport.addEventListener("error", (ev) => {
   const err = ev.error;
+  // …
+});
+```
 
+The same code, using the `onerror` event handler property, looks like this:
+
+```js
+dtlsTransport.onerror = (ev) => {
+  const err = ev.error;
   // …
 };
 ```