Curl and powershell json woes - json

Question

I'm still having issues with getting json working with the curl command in powershell.
even a simple request to POST something into elastic fails miserably with the error
Unexpected character ('D' (code 68)): was expecting double-quote to start field name
I've stripped the script down to the basics just to try and test curl and json and still get failures
$curlExe = "h:\powershell\esb\elastic\curl\curl.exe"
$elasticdata = #{
timereceived = "test"
timesent = "testing"
name = "anon"
status = 0
}
$curldata = $elasticdata | convertto-json -Compress
$elasticoutput = "h:\powershell\esb\elastic\elastic.txt"
$elastichost = "http://localhost:9200/newtest20/filecopy/?pretty"
$elasticheader = "content-type: application/json"
$elamethod = "POST"
$curlargs = $elastichost,
'-X',$elamethod,
'-d',$curldata,
'-H',$elasticheader
& $curlexe #curlargs

Answer 1

If your server is running Powershell 2.0 you will not have Invoke-webRequestbut ConvertTo-Json will also be missing.
I also encountered this issue in the past and I made these functions to workaround that issue
function Invoke-WebRequest([string] $Url, [string] $Method, $BodyObject)
{
$request = [System.Net.WebRequest]::Create($Url)
$request.Method = $Method
$request.ContentType = "application/json"
if ($Method -eq "POST")
{
try
{
$body = ConvertTo-Json20 -InputObject $BodyObject
$requestStream = $request.GetRequestStream()
$streamWriter = New-Object System.IO.StreamWriter($requestStream)
$streamWriter.Write($body)
}
finally
{
if ($null -ne $streamWriter) { $streamWriter.Dispose() }
if ($null -ne $requestStream) { $requestStream.Dispose() }
}
}
$response = $request.GetResponse()
if ($response.StatusCode -ne [System.Net.HttpStatusCode]::OK)
{
throw "ERROR Could not $Method url [$Url]"
}
return $response
}
function ConvertTo-Json20($InputObject){
Add-Type -Assembly System.Web.Extensions
$jsonSerializer = New-Object System.Web.Script.Serialization.JavascriptSerializer
return $jsonSerializer.Serialize($InputObject)
}