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all messages to the server should be an object #556
@convolvatron the ping is there because inactive sockets are closed after a period of inactivity on a lot of hosts (e.g. heroku). So we have to send a message to the server every once in awhile to make sure that the socket stays open even if the user isn't doing anything on the page at the time.
Nov 15, 2016
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as usual i'm confused about the underlying truth, but i think that the ws protocol explicitly
Yeah they do something extra: https://devcenter.heroku.com/articles/http-routing#timeouts