vagran+box 环境下，使用 PostMan 出现无法访问的问题解决

由于使用的是vagrant + virtualbox搭建的开发环境，在测试 http://bbs.test/api/version的时候，一直报错

Could not get any response
There was an error connecting to http://bbs.test/api/version.
Why this might have happened:
The server couldn't send a response:
Ensure that the backend is working properly
Self-signed SSL certificates are being blocked:
Fix this by turning off 'SSL certificate verification' in Settings > General
Proxy configured incorrectly
Ensure that proxy is configured correctly in Settings > Proxy
Request timeout:
Change request timeout in Settings > General

但是使用浏览器和 advanced rest client 是没有问题的。

根据报错信息排查，发现设置项里有一项Proxy代理设置。默认是开启了 Use System Proxy，而 Global Proxy Configuration 是关闭的。
打开PostMan Console发现映射的是 127.0.0.1:80 上的

所以只要设置一下全局代理为以下即可：