function Get-RegistryValue {
    param (
        [Parameter(Mandatory)]
        [string]$RegistryPath,
        [Parameter(Mandatory)]
        [string]$RegistryValue
    )
    try {
        if (Test-Path -Path $RegistryPath -PathType Container) {
            $key = Get-Item -Path $RegistryPath -ErrorAction Stop
            $value = $key.GetValue($RegistryValue, $null)
            return $value
        }
    }
    catch {}
}
 

try { $arch = ((Get-CimInstance -ClassName Win32_OperatingSystem).OSArchitecture).substring(0, 2) }
catch { switch ([System.Environment]::Is64BitOperatingSystem) { $true { $arch = '64' } $false { $arch = '32' } } }
switch ($arch) {
    '32' { $registryPath = 'HKLM:\SOFTWARE\Action1' }
    '64' { $registryPath = 'HKLM:\SOFTWARE\WOW6432Node\Action1' }
}
$proxy = Get-RegistryValue -RegistryPath $registryPath -RegistryValue "agent.use.proxy"
$hostname = Get-RegistryValue -RegistryPath $registryPath -RegistryValue "agent.proxy.hostname"
$port = Get-RegistryValue -RegistryPath $registryPath -RegistryValue "agent.proxy.port"
$username = Get-RegistryValue -RegistryPath $registryPath -RegistryValue "agent.proxy.username"
$password = Get-RegistryValue -RegistryPath $registryPath -RegistryValue "agent.proxy.password"
if ($null -eq $proxy -or $proxy.ToLower() -ne 'yes') {
    $Host.UI.WriteLine("The proxy is not configured.")
    return
}
New-ItemProperty -Path $registryPath -Name 'agent.use.proxy' -Value 'yes' -PropertyType String -Force
if (($null -eq $port) -or ([string]::IsNullOrEmpty($hostname) -or $port -eq 0)) {
    $Host.UI.WriteLine("The proxy host name or port is not specified.")
    return
}
$argument = "winhttp set proxy $hostname" + ":" + [string]$port
Start-Process -FilePath netsh -ArgumentList $argument -NoNewWindow -Wait