From a6b946487cbd40aaa9867930235c1d2ed7017f53 Mon Sep 17 00:00:00 2001
From: Anmol Sethi <hi@nhooyr.io>
Date: Fri, 13 Oct 2023 02:23:30 -0700
Subject: [PATCH] conn: Add noCopy

Closes #349
---
 conn.go  | 5 +++++
 ws_js.go | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/conn.go b/conn.go
index ab37248e..17a6b966 100644
--- a/conn.go
+++ b/conn.go
@@ -42,6 +42,8 @@ const (
 // This applies to context expirations as well unfortunately.
 // See https://github.com/nhooyr/websocket/issues/242#issuecomment-633182220
 type Conn struct {
+	noCopy
+
 	subprotocol    string
 	rwc            io.ReadWriteCloser
 	client         bool
@@ -288,3 +290,6 @@ func (m *mu) unlock() {
 	default:
 	}
 }
+
+type noCopy struct{}
+func (*noCopy) Lock() {}
diff --git a/ws_js.go b/ws_js.go
index 3248933c..05f2202e 100644
--- a/ws_js.go
+++ b/ws_js.go
@@ -40,6 +40,7 @@ const (
 
 // Conn provides a wrapper around the browser WebSocket API.
 type Conn struct {
+	noCopy
 	ws wsjs.WebSocket
 
 	// read limit for a message in bytes.
@@ -563,3 +564,6 @@ func (m *mu) unlock() {
 	default:
 	}
 }
+
+type noCopy struct{}
+func (*noCopy) Lock() {}