diff options
Diffstat (limited to 'ext/http/01_http.js')
-rw-r--r-- | ext/http/01_http.js | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/ext/http/01_http.js b/ext/http/01_http.js index b14a0d352..073cc7a7c 100644 --- a/ext/http/01_http.js +++ b/ext/http/01_http.js @@ -341,7 +341,8 @@ const _ws = Symbol("[[associated_ws]]"); function upgradeWebSocket(request, options = {}) { - if (request.headers.get("upgrade") !== "websocket") { + const upgrade = request.headers.get("upgrade"); + if (!upgrade || StringPrototypeToLowerCase(upgrade) !== "websocket") { throw new TypeError( "Invalid Header: 'upgrade' header must be 'websocket'", ); |