curl to PowerShell command

Question

Below is a curl script that gives the out in the json format (for details of snapshots):

curl -k -s -u superadmin:password-X GET https://127.0.0.1/snapshots -H "Accept: application/json" -H "Content-Type: application/json"

I'm new to Powershell. I'm not sure which one to use. Invoke-RestMethod or Invoke-WebRequest.

I executed the below command:

$cred = Get-Credential
Invoke-WebRequest -Uri 'https://127.0.0.1/snapshots' -Method GET -Credential $cred

And I get the below error:

Invoke-WebRequest : Unable to connect to the remote server At line:2 char:1 Invoke-WebRequest -Uri 'https://127.0.0.1/snapshots' -Method GET - ... CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest], WebException FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand

Can you please help to convert it to Powershell?

Yash Gupta · Accepted Answer · 2022-02-18 06:06:46Z

1

Invoke-RestMethod is supposed to be the appropriate PowerShell equivalent for curl command.

So, your existing curl command:

curl -k -s -u superadmin:password-X GET https://127.0.0.1/snapshots -H "Accept: application/json" -H "Content-Type: application/json"

can be converted to PowerShell like this:

$Header = @{"Authorization" = "Basic "+[System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes("superadmin:password"))}
Invoke-RestMethod -Method GET -Header $Header -ContentType "application/json" -uri "https://127.0.0.1/snapshots"

answered Feb 18, 2022 at 6:06

Yash Gupta

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9 Comments

profworkidea Over a year ago

Hi Yash, Thank you for your response. I get the following error: Invoke-RestMethod : The underlying connection was closed: An unexpected error occurred on a send. At line:1 char:1 + Invoke-RestMethod -Method GET -Header $Header -ContentType "applicati ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-RestMethod], WebExc eption + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeRestMethodCommand

Yash Gupta Over a year ago

It seems that you need to enforce TLS. Run this command & then try to run the above script: [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

Daniel Stenberg Over a year ago

use curl.exe and it works in powershell too...

profworkidea Over a year ago

Thank you Yash & Daniel. I tried with the option: [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 I still get the same error: Invoke-RestMethod : The underlying connection was closed: An unexpected error occurred on a send. At line:1 char:1 + Invoke-RestMethod -Method GET -Header $Header -ContentType "applicati ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-RestMethod], WebExc

profworkidea Over a year ago

OS is Windows Server 2019 Standard edition. Poweshell Version : 5.1.17763.1971 I tried the following and get same error for both Invoke-RestMethod & Invoke-WebRequest. $cred = Get-Credential $Header = @{"Authorization" = "Basic "+[System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes("superadmin:password"))} Invoke-RestMethod -Method GET -Header $Header -ContentType "application/json" -uri "127.0.0.1/snapshots" -Credential $cred Invoke-WebRequest -Method GET -Header $Header -ContentType "application/json" -uri "127.0.0.1/snapshots" -Credential $cred

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