Yaml Build Task - DotNetCoreCLI@2 Restore working differently when using Proxy & No Proxy

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Issue moved from dotnet/sdk#12121

• Please respond to @temelj.

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From @temelj on Monday, June 22, 2020 9:33:04 AM

Hi,

I have a step in my azure pipelines that does the following

    - task: DotNetCoreCLI@2
      displayName: 'Restore Packages'
      inputs:
        command: 'restore'
        projects: '**/*.csproj'
        feedsToUse: 'select'
        vstsFeed: '00000a00-ef00-0e00-0fb0-000bf0bda000'
        includeNuGetOrg: false    

The following logs are from a machine that has NO Proxy configured:

##[debug]Setting up auth
##[debug]SYSTEMVSSCONNECTION=https://dev.azure.com/REMOVED/
##[debug]Discovered URL prefixes: https://dev.azure.com/REMOVED/,https://REMOVED.pkgs.visualstudio.com/,https://pkgsprodcus1.pkgs.visualstudio.com/,https://REMOVED.pkgs.visualstudio.com/,https://REMOVED.pkgs.visualstudio.com/,https://pkgs.dev.azure.com/REMOVED/
##[debug]DotNetCoreCLITask.ExtraUrlPrefixesForTesting=undefined
##[debug]Getting credentials for local feeds
SYSTEMVSSCONNECTION exists true
##[debug]SYSTEMVSSCONNECTION exists true
##[debug]Got auth token
##[debug]externalEndpoints=null
##[debug]Setting up sources
##[debug]selectOrConfig=select
##[debug]Agent.BuildDirectory=D:\TEMELJ_v1\_work\1
##[debug]build.buildId=15518

##[debug]feedRestore=00000a00-ef00-0e00-0fb0-000bf0bda000
##[debug]NuGet.OverwritePackagingCollectionUrl=undefined
##[debug]Getting registry url from https://REMOVED.pkgs.visualstudio.com/
##[debug]Agent.ProxyUrl=undefined
##[debug]Created webApi client for https://REMOVED.pkgs.visualstudio.com/; options: {"proxy":null,"allowRetries":true,"maxRetries":5,"ignoreSslError":false}
##[debug]Feed registry url: https://REMOVED.pkgs.visualstudio.com/_packaging/00000a00-ef00-0e00-0fb0-000bf0bda000/nuget/v3/index.json
##[debug]includeNuGetOrg=false
##[debug]Adding the following sources to the config file: 00000a00-ef00-0e00-0fb0-000bf0bda000
##[debug]Adding sources to nuget.config
##[debug]Saving NuGet.config to a temporary config file.

Then the following when a proxy is configured:

##[debug]Setting up auth
##[debug]SYSTEMVSSCONNECTION=https://dev.azure.com/REMOVED/
##[debug]Discovered URL prefixes: https://dev.azure.com/REMOVED/
##[debug]DotNetCoreCLITask.ExtraUrlPrefixesForTesting=undefined
##[debug]Getting credentials for local feeds
SYSTEMVSSCONNECTION exists true
##[debug]SYSTEMVSSCONNECTION exists true
##[debug]Got auth token
##[debug]externalEndpoints=null
##[debug]Setting up sources
##[debug]selectOrConfig=select
##[debug]Agent.BuildDirectory=D:\TEMELJ_v1\_work\1
##[debug]build.buildId=15522
##[debug]feedRestore=00000a00-ef00-0e00-0fb0-000bf0bda000
##[debug]NuGet.OverwritePackagingCollectionUrl=undefined
##[debug]Getting registry url from https://dev.azure.com/REMOVED/
##[debug]Agent.ProxyUrl=http://127.0.0.1:3128
##[debug]Agent.ProxyUsername=undefined
##[debug]Agent.ProxyPassword=undefined
##[debug]Agent.ProxyBypassList=undefined
##[debug]Created webApi client for https://dev.azure.com/REMOVED/; options: {"proxy":{"proxyUrl":"http://127.0.0.1:3128","proxyBypassHosts":[]},"allowRetries":true,"maxRetries":5,"ignoreSslError":false}
##[debug]Network call failed. Number of retries left: 2
##[warning]Failed to find api location for area: nuget id: 9D3A4E8E-2F8F-4AE1-ABC2-B461A51CB3B3
##[debug]Processed: ##vso[task.issue type=warning;]Failed to find api location for area: nuget id: 9D3A4E8E-2F8F-4AE1-ABC2-B461A51CB3B3
##[debug]Error: Failed to find api location for area: nuget id: 9D3A4E8E-2F8F-4AE1-ABC2-B461A51CB3B3
    at beginGetLocation.then (D:\TEMELJ_v1\_work\_tasks\DotNetCoreCLI_5541a522-603c-47ad-91fc-a4b1d163081b\2.171.3\node_modules\azure-devops-node-api\VsoClient.js:85:23)
    at process._tickCallback (internal/process/next_tick.js:109:7)

Based on the logs, I cannot identify whether the Proxy is blocking something but one difference I’ve observed is with the following:

NO PROXY: ##[debug]Discovered URL prefixes: https://dev.azure.com/REMOVED/,https://REMOVED.pkgs.visualstudio.com/,https://pkgsprodcus1.pkgs.visualstudio.com/,https://REMOVED.pkgs.visualstudio.com/,https://REMOVED.pkgs.visualstudio.com/,https://pkgs.dev.azure.com/REMOVED/ WITH PROXY: ##[debug]Discovered URL prefixes: https://dev.azure.com/REMOVED/

Why would that be the case?

[marcpopMSFT]

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Issue moved from dotnet/sdk#12121

• Please respond to @temelj.

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From @temelj on Tuesday, June 23, 2020 7:55:02 AM

Findings: api.nuget.org is blocked by the proxy I am attempting to purely use the private feed (to which I know that I have connectivity to).

And it is failing so far. I am starting to believe that the tooling relies on api.nuget.org to be accessible regardless of the fact that one uses a private feed additionally. I am waiting for api.nuget.org to be unblocked through the proxy - if it works then, my theory is correct, if it doesn’t, back at square one.

[github-actions[bot]]

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