{{category Windows PowerShell,nolink}} WinHTTP（Windows HTTP Services）とは、Windowsの機能の一つで、IPネットワーク上でHTTP通信を行うサービス。Windows Update などで利用される。

!!! WinHttp の proxy 設定
レジストリ HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections の WinHttpSettings に設定があるが、バイナリで記載されている。

確認や設定変更は、 netsh コマンドで行える（変更時は管理者権限が必要）。

!! netsh コマンド
! 現在のwinhttpのプロキシ設定状況を見る
 netsh winhttp show proxy
! ieのプロキシ設定をwinhttp proxyにも踏襲する。
 netsh winhttp import proxy source=ie
! winhttp proxy設定をリセットする。
 netsh winhttp reset proxy
! winhttp proxy設定を手動で行う。
 netsh winhttp set proxy proxy-server="xxx.xxx.xxx.xxx:8080" bypass-list="yyy.yyy.yyy.*;"

!!! PowerShell
{{code Text,4,
Function Get-WinHttpProxy {
	$WinHttpProxyDirect = -1; $WinHttpProxyServer = $null; $WinHttpProxyBypass = $null;
	$WinHttpSettings = $null
	Try {
		$WinHttpSettings = Get-ItemProperty 'Registry::HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections' -Name WinHttpSettings
	} Catch { }

	If ($null -ne $WinHttpSettings) {
		$reg = $WinHttpSettings.WinHttpSettings
		$ln1 = $reg[12]
		If ($ln1 -gt 0) {
			$WinHttpProxyDirect = 0
			$WinHttpProxyServer = -join ($reg[(12+3+1)..(12+3+1+$ln1-1)] | ForEach-Object {([char]$_)})
			$ln2 = $reg[12+3+1+$ln1]
			If ($ln2 -gt 0) {
				$WinHttpProxyBypass = -join ($reg[(12+3+1+$ln1+3+1)..(12+3+1+$ln1+3+1+$ln2)] | ForEach-Object {([char]$_)})
			} Else {
				$WinHttpProxyBypass = "(none)"
			}
		} Else {
			$WinHttpProxyDirect = 1
			$WinHttpProxyServer = "Direct Access"
			$WinHttpProxyBypass = "(none)"
		}
	} Else {
		$WinHttpProxyServer = "error - not able to read registry entry"
		$WinHttpProxyBypass = "error - not able to read registry entry"
	}

	$Settings = @{
		PSTypeName	= 'WinHttpProxySettings'
		Direct		= $WinHttpProxyDirect
		Server		= $WinHttpProxyServer
		Bypass		= $WinHttpProxyBypass
	}
	[PSCustomObject]$Settings
}
}}


!! get winhttp proxy setting by powershell(using p/invoke)
winhttp.dll の WinHttpGetDefaultProxyConfiguration をロードして取得する

https://gist.github.com/itn3000/b414da5337b7d229d812ec3ddcffb446

!! netsh winhttp * proxy, but in PowerShell
Pure PowerShell. 取得と変更

https://gist.github.com/XPlantefeve/a53a6af53b458188ee0766acc8508776

!! WinHttpProxy
https://www.powershellgallery.com/packages/VMware.Cloud.Director.Community/0.1/Content/Private%5CGet-WinHttpProxy.ps1