I met some problems when I downloaded some files from GitHub on WSL2. I cannot download files when I connect to GitHub directly. So, I try to use a proxy to solve the problem. I have tried serval solutions which do not work.

Now, there is a way to solve the problem with the following content.

Preparation:

  1. Open the function of Allow LAN in your proxy software.

  2. Get the port(eg. Clash’s default port is 7890) of the proxy.

Solution:

  1. Add the following code at the end of .bashrc

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    ipip=$(grep nameserver /etc/resolv.conf | sed 's/nameserver //')
    proxy_port=7890

    showproxy()
    {
    echo ''
    echo 'Show Proxy:'
    echo "http_proxy=$http_proxy"
    echo "https_proxy=$https_proxy"
    echo "ftp_proxy=$ftp_proxy"
    echo "ALL_PROXY=$ALL_PROXY"
    echo ''
    }

    proxy () {
    export ALL_PROXY=socks5://${ipip}:${proxy_port}
    export ftp_proxy=http://$ipip:$proxy_port/
    export http_proxy=http://$ipip:$proxy_port/
    export https_proxy=http://$ipip:$proxy_port/
    showproxy
    curl -vv http://google.com
    }

    noproxy () {
    unset ALL_PROXY
    unset ftp_proxy
    unset http_proxy
    unset https_proxy
    showproxy
    curl myip.ipip.net
    }

    proxy
  2. Enabling environment variables

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    source .bashrc
  3. Now, you can use the following command to activate proxy and deactivate proxy in shell.

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    # activate
    proxy

    # deactivate
    noproxy

And have a nice day!