From cbe256209d6bdb8181d063a5762e9ed24a9ee141 Mon Sep 17 00:00:00 2001
From: Konstantin Burkalev <KSDaemon@gmail.com>
Date: Thu, 20 Oct 2022 11:04:56 +0300
Subject: [PATCH] Fixes subprotocol selection (aling with rfc6455)

---
 server.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/server.go b/server.go
index bb33597..e877920 100644
--- a/server.go
+++ b/server.go
@@ -101,8 +101,8 @@ func checkSameOrigin(r *http.Request) bool {
 func (u *Upgrader) selectSubprotocol(r *http.Request, responseHeader http.Header) string {
 	if u.Subprotocols != nil {
 		clientProtocols := Subprotocols(r)
-		for _, serverProtocol := range u.Subprotocols {
-			for _, clientProtocol := range clientProtocols {
+		for _, clientProtocol := range clientProtocols {
+			for _, serverProtocol := range u.Subprotocols {
 				if clientProtocol == serverProtocol {
 					return clientProtocol
 				}