From 0efd36b8e734ff9efe1047f1a747b62287bf1803 Mon Sep 17 00:00:00 2001
From: hashrock <hashedrock@gmail.com>
Date: Thu, 30 May 2019 22:22:55 +0900
Subject: [PATCH] ws: Add sec-websocket-version to handshake header

---
 ws/mod.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ws/mod.ts b/ws/mod.ts
index 2ae6cabda3e9..86ab2f045dd2 100644
--- a/ws/mod.ts
+++ b/ws/mod.ts
@@ -423,6 +423,7 @@ async function handshake(
   headers.set("upgrade", "websocket");
   headers.set("connection", "upgrade");
   headers.set("sec-websocket-key", key);
+  headers.set("sec-websocket-version", "13");
 
   let headerStr = `GET ${pathname}?${searchParams || ""} HTTP/1.1\r\n`;
   for (const [key, value] of headers) {