Unable to download files into Appveyor VM for installation

chris+appveyor's Avatar


28 Nov, 2015 10:41 PM

I'm trying to download and install OpenSSL since my application needs to link against it.

I have tried both of the following commands, as suggested on this page:

- ps: (new-object net.webclient).DownloadFile('https://www.openssl.org/source/openssl-1.0.2d.tar.gz', 'openssl-1.0.2d.tar.gz')
- ps: Start-FileDownload 'https://www.openssl.org/source/openssl-1.0.2d.tar.gz'

However both fail in the same way:

Start-FileDownload 'https://www.openssl.org/source/openssl-1.0.2d.tar.gz'
Exception calling "DownloadFile" with "3" argument(s): "The underlying connection was closed: An unexpected error occurred on a send."
At C:\Program Files\AppVeyor\BuildAgent\Modules\build-worker-api\build-worker-api.psm1:238 char:5
+     [Appveyor.BuildAgent.Api.RestBuildServices]::DownloadFile($Url, $FileName, $ ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : WebException

This looks vaguely like it might be a firewall issue. Is it possible that AppVeyor blocks outbound SSL requests on port 443?

Thanks in advance for your help!

  1. Support Staff 1 Posted by Feodor Fitsner on 28 Nov, 2015 10:54 PM

    Feodor Fitsner's Avatar

    This works:

    [Net.ServicePointManager]::SecurityProtocol = 'Tls12'
    (new-object net.webclient).DownloadFile('https://www.openssl.org/source/openssl-1.0.2d.tar.gz', "$env:appveyor_build_folder\openssl-1.0.2d.tar.gz")
  2. 2 Posted by chris+appveyor on 29 Nov, 2015 12:30 PM

    chris+appveyor's Avatar

    Thanks Feodor! Unfortunately my first attempt to do this in appveyor.yml failed:

    - ps: [Net.ServicePointManager]::SecurityProtocol = 'Tls12'
    - ps: Start-FileDownload 'https://www.openssl.org/source/openssl-1.0.2d.tar.gz'

    Results in this exception:

    Error parsing appveyor.yml: (Line: 30, Col: 34, Idx: 450) - (Line: 30, Col: 62, Idx: 478): While parsing a block mapping, did not find expected key.

    I'm guessing that the appveyor.yml parser doesn't like the PowerShell square brackets syntax. Any ideas? Is there some way to escape it?

  3. 3 Posted by chris+appveyor on 29 Nov, 2015 08:30 PM

    chris+appveyor's Avatar

    Double-quoting the command seems to have worked, thank you!

    - ps: "[Net.ServicePointManager]::SecurityProtocol = 'Tls12'"
    - ps: Start-FileDownload 'https://www.openssl.org/source/openssl-1.0.2d.tar.gz'
  4. chris+appveyor closed this discussion on 22 Dec, 2015 09:38 PM.

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