Index: websockify/websockifyserver.py
--- websockify/websockifyserver.py.orig
+++ websockify/websockifyserver.py
@@ -451,15 +451,6 @@ class WebSockifyServer():
 
             if  tcp_keepalive:
                 sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
-                if tcp_keepcnt:
-                    sock.setsockopt(socket.SOL_TCP, socket.TCP_KEEPCNT,
-                                    tcp_keepcnt)
-                if tcp_keepidle:
-                    sock.setsockopt(socket.SOL_TCP, socket.TCP_KEEPIDLE,
-                                    tcp_keepidle)
-                if tcp_keepintvl:
-                    sock.setsockopt(socket.SOL_TCP, socket.TCP_KEEPINTVL,
-                                    tcp_keepintvl)
 
             if connect:
                 sock.connect(addrs[0][4])