This may be a feature or a tips: Instantly refresh Windows proxy settings

[Unknown78]

After changing the proxy settings, whether it's enabling, disabling, or changing the address/port, it does not automatically applies to the whole system.

This PowerShell script from stackoverflow helps it a lot.
https://stackoverflow.com/a/39079005/6458107https://stackoverflow.com/questions/21568502/ie-enable-disable-proxy-settings-via-registry

function Refresh-System
{
  $signature = @'
[DllImport("wininet.dll", SetLastError = true, CharSet=CharSet.Auto)]
public static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int dwBufferLength);
'@

$INTERNET_OPTION_SETTINGS_CHANGED   = 39
$INTERNET_OPTION_REFRESH            = 37
$type = Add-Type -MemberDefinition $signature -Name wininet -Namespace pinvoke -PassThru
$a = $type::InternetSetOption(0, $INTERNET_OPTION_SETTINGS_CHANGED, 0, 0)
$b = $type::InternetSetOption(0, $INTERNET_OPTION_REFRESH, 0, 0)
return $a -and $b
}
Refresh-System

Save that script into something like RefreshPROXY.ps1 and run it whenever you need to.

---

I usually turn this script into one line that you could run on command prompt, windows terminal, or inside a batch script however you want to.

powershell -command "$signature = '[DllImport("^""wininet.dll"^"", SetLastError = true, CharSet=CharSet.Auto)] public static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int dwBufferLength);'; $type = Add-Type -MemberDefinition $signature -Name wininet -Namespace pinvoke -PassThru; $type::InternetSetOption(0,39,0,0); $type::InternetSetOption(0,37,0,0);" > nul

---

This could be a feature and be run as dispatch proxy-refresh if it were implemented. With it's own Rust code, of course, good luck devs... 👍

[alexkirsz]

If this is a genuinely useful command for all Windows programs, that feature would make sense in its own crate and exposed as its own CLI.

For this rewrite, I also looked at automatically applying proxy settings to the whole system as a dispatch option. There are crates that allow you to do this, but I'm wary of compatibility between OSes.

For Windows: https://crates.io/crates/proxyconf
For Mac: https://github.com/wyhaya/networksetup
For Linux, I expect there's a plethora of options depending on the distribution.

I am not likely to implement this myself as part of dispatch-proxy.