14115 2011-09-12 09:29:38 +0000 WebSocket API should allow sending WS Ping frames from client to server 2011-09-12 19:47:42 +0000 1 1 1 Unclassified HTML WG HTML5 spec unspecified Other other RESOLVED DUPLICATE 13104 P2 normal --- 1 ibc ian art.barstow mike public-html-admin public-html-wg-issue-tracking public-html-bugzilla oldest_to_newest 56659 0 ibc 2011-09-12 09:29:38 +0000 WebSocket API does not define how the client can send a Ping frame: http://dev.w3.org/html5/websockets/#the-websocket-interface Sometimes the Internet connection is gone and the client has not realized that the TCP connection is dead (it does not realize of it until it tries to send data over the connetion). So, in this case, the client has no way to realize that the TCP connection (or the WS connection) is unavailable. The only way would be defining a "ping" mechanism at WS subprotocol level, which would be ugly having Ping/Pong frames already defined in WS transport protocol. So, IMHO the WS API should include a mechanism for the client (the web browser typically) to send WS ping to the server periodically. For example: var myWS = new WebSocket("ws://some-domain.com"); myWS.monitor_interval(120); In this way, the API user instructs the WebSocket client to send a Ping frame every 120 seconds. In case a Pong is not received within N seconds (to define) the WS socket state would become "DISCONNECTED" or "DISCONNECTING". 56669 1 art.barstow 2011-09-12 18:52:01 +0000 Is this a dup of Web Socket API bug 13104: http://www.w3.org/Bugs/Public/show_bug.cgi?id=13104 Also, seems like this should be assigned to WebApps Web Socket API spec. 56672 2 zcorpan 2011-09-12 19:47:42 +0000 *** This bug has been marked as a duplicate of bug 13104 ***