truffle init问题解决

转：https://blog.csdn.net/qq_32760017/article/details/83480284

首先Truffle是针对基于以太坊的Solidity语言的一套开发框架。
在Mac OS执行truffle init报错：

Starting unbox...
=================

? Preparing to download box
? Downloading
Unbox failed!
? Downloading
Unbox failed!
RequestError: Error: connect ECONNREFUSED 0.0.0.0:443
    at new RequestError (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/request-promise-core/lib/errors.js:14:1)
    at Request.plumbing.callback (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/request-promise-core/lib/plumbing.js:87:1)
    at Request.RP$callback [as _callback] (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/request-promise-core/lib/plumbing.js:46:1)
    at self.callback (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/request/request.js:185:1)
    at Request.emit (events.js:315:20)
    at Request.onRequestError (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/request/request.js:881:1)
    at ClientRequest.emit (events.js:315:20)
    at TLSSocket.socketErrorListener (_http_client.js:432:9)
    at TLSSocket.emit (events.js:315:20)
    at emitErrorNT (internal/streams/destroy.js:84:8)
    at processTicksAndRejections (internal/process/task_queues.js:84:21)
Truffle v5.1.23 (core: 5.1.23)
Node v13.12.0

上网查了很多资料说法不一，有的说修改hosts文件的映射，有的也说可能是防火墙没关闭，都尝试了下还是不能解决。最终在 原文找到了解决方法。

解决方案如下：
使用google hosts文件替换本地的hosts文件即可。

然后执行truffle init成功，如下图所示：