Csdrhrt

I'm trying to install chocolatey on an windows behind a proxy:

@powershell -ExecutionPolicy unrestricted

In power shell I'm executing

$wc=new-object net.webclient;

$wc.Proxy=new-object system.net.WebProxy('<myproxy-ip>:8012',$true);

$wc.Proxy.Credentials = new-object system.net.NetworkCredential('<myusername>','<mypass>');

iex ($wc.DownloadString('https://chocolatey.org/install.ps1'));

I get the following error

Exception calling "DownloadString" with "1" argument(s): "The remote server returned an error: (407) Proxy Authentication Required."

At line:1 char:1

+ iex ($wc.DownloadString('https://chocolatey.org/install.ps1'));

+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : NotSpecified: (:) , MethodInvocationException

    + FullyQualifiedErrorId : WebException

I use the same username/password that I must enter when I'm starting firefox/iexplorer (see the image). There are no default username/passwords configured for the proxy since I must always enter them.

More details (using Inspect Element in firefox on an Private Window)

Response Headers

Cache-Control: no-cache

Connection: close

Content-Length: 813

Content-Type: text/html; charset=utf-8

Pragma: no-cache

Proxy-Authenticate: BASIC realm="PROXY_INTERNET"

Proxy-Connection: close

Set-Cookie: BCSI-CS-dfaeac52a135c7c0=2; Path=/

Can't test it (don't have a similar Proxy available to me), so I actually have no idea if this will work, but here's something you can try:

$wc = new-object net.webclient;

$proxyUri = new-object system.uri("http://<myproxy-ip>:8012");

$wc.Proxy = new-object system.net.WebProxy($proxyUri, $true);

$cachedCredentials = new-object system.net.CredentialCache;

$netCredential = new-object system.net.NetworkCredential("<myusername>", "<mypass>");



$cachedCredentials.Add($proxyUri, "Basic", $netCredential);



$wc.Proxy.Credentials = $cachedCredentials.GetCredential($proxyUri, "Basic");



iex ($wc.DownloadString("https://chocolatey.org/install.ps1"));

The intention is to use a CredentialCache object to force the credentials into using "Basic" authentication mode.

See https://github.com/chocolatey/chocolatey/wiki/Proxy-Settings-for-Chocolatey

In powershell define the function

function Create-Proxy($proxyHost,$proxyPort,$proxyUsername,$proxyPassword){

    #$proxy = [System.Net.WebRequest]::GetSystemWebProxy()

    $proxyUrl = $proxyHost+":"+$proxyPort;

    Write-Host "proxy url [$proxyUrl]";

    $proxy = New-Object System.Net.WebProxy($proxyUrl, $true);

    $passwd = ConvertTo-SecureString $proxyPassword -AsPlainText -Force; ## Website credentials

    $proxy.Credentials = New-Object System.Management.Automation.PSCredential ($proxyUsername, $passwd);

    return $proxy;

}

call it like

$wc=new-object net.webclient;

$wc.UseDefaultCredentials = $true

$wc.Proxy = Create-Proxy "<proxy-host>" "<proxy-port>" "<proxy-username>" "<proxy-clear-pass>"

$wc.DownloadString('https://chocolatey.org/install.ps1');

What I discovered is that the actual download worked, but the execution of the installer didn't since it used a custom constructed proxy.

So the iex ($wc.DownloadString("https://chocolatey.org/install.ps1")); fails because the bad proxy configuration inside the downloaded install.ps1

You can use this. Worked for me.
https://github.com/chocolatey/choco/wiki/Proxy-Settings-for-Chocolatey

Explicit Proxy Settings

Chocolatey has explicit proxy support starting with 0.9.9.9.

You can simply configure 1 or 3 settings and Chocolatey will use a proxy server. proxy is required and is the location and port of the proxy server. proxyUser and proxyPassword are optional. The values for user/password are only used for credentials when both are present.

choco config set proxy <locationandport>

choco config set proxyUser <username>

choco config set proxyPassword <passwordThatGetsEncryptedInFile>

Example

Running the following commands in 0.9.9.9:

choco config set proxy http://localhost:8888

choco config set proxyUser bob

choco config set proxyPassword 123Sup#rSecur3