Successful connections to a sockjs-node server, across various streaming transports, on Dec 8 and Dec 9, 2012. The only significant change made between those times that should affect connectivity is the switch to SSL, which I deployed within 5 minutes of midnight on Dec 9.
Visits as reported in Google Analytics ("visits in GA") are presented as a control. The number of successful connections (websockets+xhr-streaming) may be greater than the number of visits in GA. I don't know how GA calculates "visits", but it's still useful to show relative change in overall traffic.
Slight caveat: the time zones differ between GA and my server (EST vs GMT), so the 5 hour offset makes the traffic comparison imperfect. Still, it seems useful.
Dec 08 - http/ws:// Dec 09 - https/wss:// Chrome Chrome visits in GA - 8690 visits in GA - 8602