版本:2.1.0

  • https://cdn.bootcdn.net/ajax/libs/socket.io/2.1.0/socket.io.dev.js
  • https://cdn.bootcdn.net/ajax/libs/socket.io/2.1.0/socket.io.js
  • https://cdn.bootcdn.net/ajax/libs/socket.io/2.1.0/socket.io.slim.dev.js
  • https://cdn.bootcdn.net/ajax/libs/socket.io/2.1.0/socket.io.slim.js