From cb16588f466a0e3ce7ae2a44932f25ebbccc08b5 Mon Sep 17 00:00:00 2001
From: enisdenjo <badurinadenis@gmail.com>
Date: Wed, 27 Oct 2021 18:34:51 +0200
Subject: [PATCH] refactor: use `EventEmitter.once` where appropriate

---
 src/use/fastify-websocket.ts | 4 ++--
 src/use/ws.ts                | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/use/fastify-websocket.ts b/src/use/fastify-websocket.ts
index e3fcd990..d028bd95 100644
--- a/src/use/fastify-websocket.ts
+++ b/src/use/fastify-websocket.ts
@@ -67,8 +67,8 @@ export function makeHandler<
 
     // fastify-websocket uses the WebSocket.createWebSocketStream,
     // therefore errors get emitted on both the connection and the socket
-    connection.on('error', handleEmittedError);
-    socket.on('error', handleEmittedError);
+    connection.once('error', handleEmittedError);
+    socket.once('error', handleEmittedError);
 
     // keep alive through ping-pong messages
     let pongWait: NodeJS.Timeout | null = null;
diff --git a/src/use/ws.ts b/src/use/ws.ts
index e41a11fb..37e521bb 100644
--- a/src/use/ws.ts
+++ b/src/use/ws.ts
@@ -51,7 +51,7 @@ export function useServer<
   const isProd = process.env.NODE_ENV === 'production';
   const server = makeServer(options);
 
-  ws.on('error', (err) => {
+  ws.once('error', (err) => {
     console.error(
       'Internal error emitted on the WebSocket server. ' +
         'Please check your implementation.',
@@ -80,7 +80,7 @@ export function useServer<
   });
 
   ws.on('connection', (socket, request) => {
-    socket.on('error', (err) => {
+    socket.once('error', (err) => {
       console.error(
         'Internal error emitted on a WebSocket socket. ' +
           'Please check your implementation.',