Turn on proxy
The port number is specified according to the port number of the agent software, here is 7890
Windows
set http_proxy=http://127.0.0.1:7890
set https_proxy=http://127.0.0.1:7890
Linux
export http_proxy="http://127.0.0.1:7890"
export https_proxy="http://127.0.0.1:7890"
test network connection
curl -vv http://www.google.com
close proxy
Windows
set http_proxy=
set https_proxy=
Linux
export http_proxy=""
export https_proxy=""