Im working with an API that seems to not comply with the accepted standard for if-match header (value string must be enclosed in quotes), although this is apparently quite common and is accommodated in native PowerShell iwr/irm. PowerShell core behaves differently and rejects the header when building the request. Modifying the API (commercial product) to comply is not an option unfortunately.
Steps to reproduce
$headers = @{}
$headers.Add("if-match","12345")
Invoke-WebRequest -Uri "http://httpbin.org/headers" -Headers $headersExpected behavior
Works on native PowerShell
Invoke-WebRequest -Uri "http://httpbin.org/headers" -Headers $headers
StatusCode : 200
StatusDescription : OK
Content : {
"headers": {
"Host": "httpbin.org",
"If-Match": "12345",
"User-Agent": "Mozilla/5.0 (Windows NT; Windows NT 10.0; en-AU) WindowsPowerShell/5.1.14393.206"
}
}
RawContent : HTTP/1.1 200 OK
Connection: keep-alive
Access-Control-Allow-Origin: *
Access-Control-Allow-Credentials: true
Content-Length: 182
Content-Type: application/json
Date: Fri, 16 Dec 2016 05:06:38 GM...
Forms : {}
Headers : {[Connection, keep-alive], [Access-Control-Allow-Origin, *], [Access-Control-Allow-Credentials, true], [Content-Length, 182]...}
Images : {}
InputFields : {}
Links : {}
ParsedHtml : mshtml.HTMLDocumentClass
RawContentLength : 182 Actual behavior
Fails on linux
Invoke-WebRequest -Uri "http://httpbin.org/headers" -Headers $headers
Invoke-WebRequest : The format of value '12345' is invalid.
At line:1 char:1
+ Invoke-WebRequest -Uri "http://httpbin.org/headers" -Headers $headers
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [Invoke-WebRequest], FormatException
+ FullyQualifiedErrorId : System.FormatException,Microsoft.PowerShell.Commands.InvokeWebRequestCommandNote: enclosing the value in quotes allows the header to be accepted by iwr/irm, but the API I'm attempting to consume from PowerShell Core does not accept the value when enclosed in quotes.
Environment data
Name Value
---- -----
PSVersion 6.0.0-alpha
PSEdition Core
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 3.0.0.0
GitCommitId v6.0.0-alpha.14
CLRVersion
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
Im working with an API that seems to not comply with the accepted standard for if-match header (value string must be enclosed in quotes), although this is apparently quite common and is accommodated in native PowerShell iwr/irm. PowerShell core behaves differently and rejects the header when building the request. Modifying the API (commercial product) to comply is not an option unfortunately.
Steps to reproduce
Expected behavior
Works on native PowerShell
Actual behavior
Fails on linux
Note: enclosing the value in quotes allows the header to be accepted by iwr/irm, but the API I'm attempting to consume from PowerShell Core does not accept the value when enclosed in quotes.
Environment data