split ping sending and pong check

internal/websocket/staleClients.go

@@ -31,8 +31,14 @@ func RemoveStaleClients() {
 	for range ticker.C {
 		mu.Lock()
 		for _, client := range Clients {
-			// send ping and check for last pong
-			if !sendPing(client) || isStale(client) {
+			// send ping
+			if !sendPing(client) {
+				client.Conn.Close()
+				delete(Clients, client.Conn.LocalAddr())
+			}
+
+			// check for last pong
+			if isStale(client) {
 				client.Conn.Close()
 				delete(Clients, client.Conn.LocalAddr())
 			}