This should mean that you can access the package server from behind a
corporate firewall.
I tested this by setting up a Linux machine that doesn't have access to
packages.meteor.com:
$ sudo iptables -A OUTPUT -d 54.225.216.115 -j DROP
$ sudo iptables -A OUTPUT -d 184.72.252.20 -j DROP
$ sudo iptables -A OUTPUT -d 23.23.114.56 -j DROP
I confirmed that these commands both fail:
$ curl https://packages.meteor.com/
$ ./meteor search asdf # when it needs to sync first
I bought a proxy server from Proxy Bonanza and confirmed that setting
the environment variable HTTPS_PROXY to
https://PROXYUSERNAME:PROXYPASSWORD@PROXYIP:PROXYPORT/
made both of the commands above succeed.
Fixes#2515.