set proxy in wsl

proxy.sh

#!/usr/bin/env bash

hostip=$(cat /etc/resolv.conf | grep nameserver | awk '{ print $2 }')
wslip=$(hostname -I | awk '{print $1}')
port=7890

PROXY_HTTP="http://${hostip}:${port}"

proxy_set(){
    export http_proxy="${PROXY_HTTP}"
    export HTTP_PROXY="${PROXY_HTTP}"
    export https_proxy="${PROXY_HTTP}"
    export HTTPS_PROXY="${PROXY_HTTP}"
    export no_proxy="10.0.0.0/8,192.168.0.0/16,127.0.0.1,172.16.0.0/16,::1"
    export NO_PROXY="10.0.0.0/8,192.168.0.0/16,127.0.0.1,172.16.0.0/16,::1"
}

proxy_unset(){
    unset http_proxy
    unset HTTP_PROXY
    unset https_proxy
    unset HTTPS_PROXY
    unset no_proxy
    unset NO_PROXY
}

proxy_test(){
    echo "Host ip: ${hostip}"
    echo "WSL ip: ${wslip}"
    echo "Current proxy: ${http_proxy}"
}

if [ "$1" = "set" ]; then
    proxy_set
elif [ "$1" = "unset" ]; then
    proxy_unset
elif [ "$1" = "test" ]; then
    proxy_test
else
    echo "Unsupported option '$1'"
fi