René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Invoke-WebRequest removes the Content-Type header from WebResponseObject's","articleBody":"\u003c!--\r\n\r\nIf it is a bug report:\r\n- make sure you are able to repro it on the latest released version. \r\nYou can install the latest version from https://github.com/PowerShell/PowerShell/releases\r\n- Search the existing issues.\r\n- Refer to the [FAQ](../docs/FAQ.md).\r\n- Refer to the [known issues](../docs/KNOWNISSUES.md).\r\n- Fill out the following repro template\r\n\r\nIf it's not a bug, please remove the template and elaborate the issue in your own words.\r\n--\u003e\r\nThe `Content-Type` header appears to be missing everywhere except `$response.BaseResponse.Content.Headers.ContentType`. it is even being removed from `$response.RawContent` . it happens regardless of using `-UseBasicParsing` or not, regardless of `-method` and regardless of `-UserAgent`.\r\n\r\nSteps to reproduce\r\n------------------\r\n\r\n```powershell\r\nDescribe 'Invoke-WebRequest' {\r\n    Context 'Response: Content-Type Header' {\r\n        $Uri = 'http://httpbin.org/headers'\r\n        $response = Invoke-WebRequest -Uri $Uri\r\n        It \"Has BaseResponse.Content.Headers.ContentType\" {\r\n            $response.BaseResponse.Content.Headers.ContentType | \r\n            Should Not BeNullOrEmpty\r\n        }\r\n        It \"Has Headers.'Content-Type'\" {\r\n            $response.Headers.ContainsKey('Content-Type') | Should Be $True\r\n            $response.Headers.'Content-Type' | Should Not BeNullOrEmpty\r\n        }\r\n        It \"Has BaseResponse.Headers.'Content-Type'\" {\r\n            $response.BaseResponse.Headers.Keys -contains 'Content-Type' | Should Be $True\r\n            $response.BaseResponse.Headers.Get('Content-Type') | Should Not BeNullOrEmpty\r\n        }\r\n        It \"Has BaseResponse.ContentType\" {\r\n            $response.BaseResponse.ContentType | Should Not BeNullOrEmpty\r\n        }\r\n        It \"Has Content-Type in the RawContent\" {\r\n            $response.RawContent -match 'Content-Type' | Should Be $True\r\n        }\r\n    }\r\n}\r\n```\r\n\r\nExpected behavior\r\n-----------------\r\n\r\n```none\r\nDescribing Invoke-WebRequest\r\n\r\n  Context Response: Content-Type Header\r\n    [+] Has BaseResponse.Content.Headers.ContentType.MediaType 12.62s\r\n    [+] Has Headers.'Content-Type' 11.36s\r\n    [+] Has BaseResponse.Headers.'Content-Type' 28ms\r\n    [+] Has BaseResponse.ContentType 10ms\r\n    [+] Has Content-Type in the RawContent 18ms\r\n```\r\n\r\nActual behavior\r\n---------------\r\n\r\n```none\r\nDescribing Invoke-WebRequest\r\n   Context Response: Content-Type Header\r\n    [+] Has BaseResponse.Content.Headers.ContentType 13.59s\r\n    [-] Has Headers.'Content-Type' 42ms\r\n      Expected: {True}\r\n      But was:  {False}\r\n      at line: 10 in\r\n      10:             $response.Headers.ContainsKey('Content-Type') | Should Be $True\r\n    [-] Has BaseResponse.Headers.'Content-Type' 23ms\r\n      Expected: {True}\r\n      But was:  {False}\r\n      at line: 14 in\r\n      14:             $response.BaseResponse.Headers.Keys -contains 'Content-Type' | Should Be $True\r\n    [-] Has BaseResponse.ContentType 24ms\r\n      Expected: value to not be empty\r\n      at line: 18 in\r\n      18:             $response.BaseResponse.ContentType | Should Not BeNullOrEmpty\r\n    [-] Has Content-Type in the RawContent 28ms\r\n      Expected: {True}\r\n      But was:  {False}\r\n      at line: 21 in\r\n      21:             $response.RawContent -match 'Content-Type' | Should Be $True\r\n```\r\n\r\nEnvironment data\r\n----------------\r\n\r\n\u003c!-- provide the output of $PSVersionTable --\u003e\r\n\r\n```powershell\r\n\u003e $PSVersionTable\r\nName                           Value\r\n----                           -----\r\nPSVersion                      6.0.0-beta\r\nPSEdition                      Core\r\nGitCommitId                    v6.0.0-beta.4\r\nOS                             Microsoft Windows 10.0.15063\r\nPlatform                       Win32NT\r\nPSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}\r\nPSRemotingProtocolVersion      2.3\r\nSerializationVersion           1.1.0.1\r\nWSManStackVersion              3.0\r\n```\r\n","author":{"url":"https://github.com/markekraus","@type":"Person","name":"markekraus"},"datePublished":"2017-08-02T22:33:31.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/4467/PowerShell/issues/4467"}