Update

vendor/github.com/coder/websocket/close.go

@@ -1,5 +1,4 @@
 //go:build !js
-// +build !js
 
 package websocket
 
@@ -100,7 +99,7 @@ func CloseStatus(err error) StatusCode {
 func (c *Conn) Close(code StatusCode, reason string) (err error) {
 	defer errd.Wrap(&err, "failed to close WebSocket")
 
-	if !c.casClosing() {
+	if c.casClosing() {
 		err = c.waitGoroutines()
 		if err != nil {
 			return err
@@ -133,7 +132,7 @@ func (c *Conn) Close(code StatusCode, reason string) (err error) {
 func (c *Conn) CloseNow() (err error) {
 	defer errd.Wrap(&err, "failed to immediately close WebSocket")
 
-	if !c.casClosing() {
+	if c.casClosing() {
 		err = c.waitGoroutines()
 		if err != nil {
 			return err
@@ -232,12 +231,6 @@ func (c *Conn) waitGoroutines() error {
 	t := time.NewTimer(time.Second * 15)
 	defer t.Stop()
 
-	select {
-	case <-c.timeoutLoopDone:
-	case <-t.C:
-		return errors.New("failed to wait for timeoutLoop goroutine to exit")
-	}
-
 	c.closeReadMu.Lock()
 	closeRead := c.closeReadCtx != nil
 	c.closeReadMu.Unlock()
@@ -329,13 +322,7 @@ func (ce CloseError) bytesErr() ([]byte, error) {
 }
 
 func (c *Conn) casClosing() bool {
-	c.closeMu.Lock()
-	defer c.closeMu.Unlock()
-	if !c.closing {
-		c.closing = true
-		return true
-	}
-	return false
+	return c.closing.Swap(true)
 }
 
 func (c *Conn) isClosed() bool {