socket.io.js问题

Creator 2.x
#1

版本： v1.8.1
我从 https://cdnjs.cloudflare.com/ajax/libs/socket.io/2.0.4/socket.io.js 下载了socket.io.js ，因为官方手册中的下载地址打开后是404，但这个脚本在cocos creator中会报错,不能运行
socket.io.js:2 Uncaught TypeError: Cannot read property ‘Blob’ of undefined
at Object. (socket.io.js:2)
at Object. (socket.io.js:2)
at e (socket.io.js:2)
at Object. (socket.io.js:2)
at e (socket.io.js:2)
at Object. (socket.io.js:2)
at e (socket.io.js:2)
at socket.io.js:2
at socket.io.js:2
at socket.io.js:2
(anonymous) @ socket.io.js:2
(anonymous) @ socket.io.js:2
e @ socket.io.js:2
(anonymous) @ socket.io.js:2
e @ socket.io.js:2
(anonymous) @ socket.io.js:2
e @ socket.io.js:2
(anonymous) @ socket.io.js:2
(anonymous) @ socket.io.js:2
(anonymous) @ socket.io.js:2
__define @ socket.io.js:2
(anonymous) @ socket.io.js:5
run @ modular.js:85
(anonymous) @ boot.js:327
(anonymous) @ CCGame.js:412
(anonymous) @ CCLoader.js:256
(anonymous) @ utils.js:87
setTimeout (async)
callInNextTick @ utils.js:86
(anonymous) @ CCLoader.js:249
139.proto.allComplete @ loading-items.js:527
139.proto.itemComplete @ loading-items.js:715
139.LoadingItems.itemComplete @ loading-items.js:378
142.proto.flowOut @ pipeline.js:318
flow @ pipeline.js:86
(anonymous) @ pipeline.js:63
(anonymous) @ downloader.js:327
loadHandler @ downloader.js:60

#2

好像可以运行，不过又报错了
Failed to load resource: net::ERR_CONNECTION_REFUSED

#3

解决了，错误的原因不是socket.io.js的问题，是设置为脚本插件时有四个可以勾选的内容，第三个没勾

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