HttpClientMemoryLeak.ps1

function Main
{
    $ErrorActionPreference = "Stop"
    Add-Type -AssemblyName System.Net.Http

    Write-Host ("Before: {0} MB" -f ([GC]::GetTotalMemory($true) / 1MB))
    foreach ($i in 1..1000)
    {
        Get-ContentFromUrl -url "http://localhost" > $null
    }
    
    [GC]::Collect()
    Write-Host ("After : {0} MB" -f ([GC]::GetTotalMemory($true) / 1MB))
}

function Get-ContentFromUrl([string] $url)
{
    $client = New-Object Net.Http.HttpClient
    $task = $client.GetAsync($url)
    $task.Wait()
    $result = $task.Result

    #$client.Dispose()  #Should be disposed?
    #$task.Dispose()

    return $task.Result
}

Main