(PowerShell) Debug REST HTTP Request

Demonstrates how to generate the HTTP Request (with all headers intact) without actually sending the request.

Note: This example requires Chilkat v9.5.0.77 or later.

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# This example will connect to the web server, but does not actually send a request.
# When in DebugMode, the request is composed in memory and can be retrieved by calling
# GetLastDebugRequest.

$rest = New-Object Chilkat.Rest

# Connect Code...
# URL: https://test-api.service.hmrc.gov.uk/organisations/vat/MY_HMRC_VRN/returns
$bTls = $true
$port = 443
$bAutoReconnect = $true
$success = $rest.Connect("test-api.service.hmrc.gov.uk",$port,$bTls,$bAutoReconnect)
if ($success -ne $true) {
    $("ConnectFailReason: " + $rest.ConnectFailReason)
    $($rest.LastErrorText)
    exit
}

# Build the request body...
$json = New-Object Chilkat.JsonObject
$json.UpdateString("periodKey","A001")
$json.UpdateNumber("vatDueSales","105.50")
$json.UpdateNumber("vatDueAcquisitions","-100.45")
$json.UpdateNumber("totalVatDue","5.05")
$json.UpdateNumber("vatReclaimedCurrPeriod","105.15")
$json.UpdateNumber("netVatDue","100.10")
$json.UpdateInt("totalValueSalesExVAT",300)
$json.UpdateInt("totalValuePurchasesExVAT",300)
$json.UpdateInt("totalValueGoodsSuppliedExVAT",3000)
$json.UpdateInt("totalAcquisitionsExVAT",3000)
$json.UpdateBool("finalised",$true)

# Add Headers...
$rest.AddHeader("Accept","application/vnd.hmrc.1.0+json")
$rest.AddHeader("Authorization","Bearer HMRC_ACCESS_TOKEN")
$rest.AddHeader("Content-Type","application/json")

$sbRequestBody = New-Object Chilkat.StringBuilder
$json.EmitSb($sbRequestBody)

# Set DebugMode so that no request is actually sent.
$rest.DebugMode = $true

$sbResponseBody = New-Object Chilkat.StringBuilder
$success = $rest.FullRequestSb("POST","/organisations/vat/MY_HMRC_VRN/returns",$sbRequestBody,$sbResponseBody)
if ($success -ne $true) {
    $($rest.LastErrorText)
    exit
}

# Get the exact contents of what would've been sent.
# This includes the HTTP start line, the HTTP request headers, and the request body.
# Given that it's possible for the request body to contain binary data,
# the GetLastDebugRequest fetches into a BinData object.
# In this case, however, our request body contained JSON, so we can
# examine it as a string..
$bdRequest = New-Object Chilkat.BinData
$success = $rest.GetLastDebugRequest($bdRequest)

$("----")
$($bdRequest.GetString("utf-8"))
$("----")

# The output for the above case:

# POST /organisations/vat/MY_HMRC_VRN/returns HTTP/1.1
# Accept: application/vnd.hmrc.1.0+json
# Host: test-api.service.hmrc.gov.uk
# Authorization: Bearer HMRC_ACCESS_TOKEN
# Content-Type: application/json
# Content-Length: 281
# 
# {"periodKey":"A001","vatDueSales":105.50, ... ,"finalised":true}
# 
#