René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"On CentOS Powershell uses the system libcurl that does not support custom SSL certificate validation","articleBody":"This is similar to #2211 but for CentOS. This is probably still an issue with dotnet but maybe powershell can patch it in a similar way as the OS X patch. I haven't found a workaround yet.\n## Steps to reproduce\n\nRun:\n\n``` powershell\n$handler = new-object \"System.Net.Http.HttpClientHandler\"\n$handler.ServerCertificateCustomValidationCallback = { $true }\n$client = new-object \"System.Net.Http.HttpClient\" -Arg @($handler)\n$client.GetStringAsync(\"https://google.com\").GetAwaiter().GetResult()\n```\n## Expected behavior\n\nAn error telling you that there is no runtime context on the thread. Which means the execution reached the validation script block.\n## Actual behavior\n\nError:\n\n```\nException calling \"GetResult\" with \"0\" argument(s): \"The libcurl library in \nuse (7.29.0) and its SSL backend (\"NSS/3.19.1 Basic ECC\") do not support \ncustom handling of certificates. A libcurl built with OpenSSL is required.\"\nAt line:1 char:1\n+ $client.GetStringAsync(\"https://google.com\").GetAwaiter().GetResult()\n+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException\n    + FullyQualifiedErrorId : PlatformNotSupportedException\n```\n## Environment data\n\n``` powershell\n\u003e $PSVersionTable\nName                           Value                                           \n----                           -----                                           \nPSVersion                      6.0.0-alpha                                     \nPSEdition                      Core                                            \nPSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}                         \nBuildVersion                   3.0.0.0                                         \nGitCommitId                    v6.0.0-alpha.11                                 \nCLRVersion                                                                     \nWSManStackVersion              3.0                                             \nPSRemotingProtocolVersion      2.3                                             \nSerializationVersion           1.1.0.1\n```\n","author":{"url":"https://github.com/atanasa","@type":"Person","name":"atanasa"},"datePublished":"2016-10-20T14:34:41.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":22},"url":"https://github.com/2511/PowerShell/issues/2511"}