What is the essence of server-sent event in h5?
Since it is still an http protocol, is there no three-way handshake process?
Does every server-side push really do not require the client to initiate a request first, or is there still a process of client requesting, but it is just an illusion?
迷茫2017-06-19 09:09:49
http://www.ruanyifeng.com/blo...
Old driver Ruan Yifeng has an article, please refer to it
