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WebSocket limitations

WebSocket is an Internet Engineering Task Force (IETF) protocol used by Diffusion™ to provide a full-duplex communication channel over a single TCP connection. It is not supported by all browser versions.

Table 1. Support for WebSocket
Version WebSocket support?
Internet Explorer® 9.0 and earlier NO
Internet Explorer 10.0 and later YES (see note)
Firefox® YES
Chrome™ YES
Safari® YES
Opera® YES
Android™ YES
Note: Internet Explorer 11 contains a bug that causes WebSocket connections to be dropped after 30 seconds of inactivity. To work around this problem set the system ping frequency to 25 seconds or less. You can set the system ping frequency in the Server.xml configuration file.