From 0ace009a54f6b781def9386298a2b053f3224bc6 Mon Sep 17 00:00:00 2001
From: syuilo <syuilotan@yahoo.co.jp>
Date: Tue, 18 Aug 2020 22:52:54 +0900
Subject: [PATCH] fix(server): Prevent error when recieve non-json data from
 websocket

Fix #6658
---
 src/server/api/stream/index.ts | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/server/api/stream/index.ts b/src/server/api/stream/index.ts
index d420c6e79..36e08ec05 100644
--- a/src/server/api/stream/index.ts
+++ b/src/server/api/stream/index.ts
@@ -71,7 +71,15 @@ export default class Connection {
 	private async onWsConnectionMessage(data: websocket.IMessage) {
 		if (data.utf8Data == null) return;
 
-		const { type, body } = JSON.parse(data.utf8Data);
+		let obj: Record<string, any>;
+
+		try {
+			obj = JSON.parse(data.utf8Data);
+		} catch (e) {
+			return;
+		}
+
+		const { type, body } = obj;
 
 		switch (type) {
 			case 'api': this.onApiRequest(body); break;