(VB.NET) Shippo POST to Transaction Endpoint

Demonstrates how to POST to the Transaction endpoint with your Rate object_id to purchase your international shipping label.

For more information, see https://goshippo.com/docs/international/

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

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

Dim http As New Chilkat.Http
Dim success As Boolean

' Implements the following CURL command:

' curl https://api.goshippo.com/transactions \
'     -H "Authorization: ShippoToken <API_TOKEN>" \
'     -d rate="ec6143e746094bcab1bdc4c17600dabf"
'     -d label_file_type="PDF"
'     -d async=false

Dim req As New Chilkat.HttpRequest
req.HttpVerb = "POST"
req.Path = "/transactions"
req.ContentType = "application/x-www-form-urlencoded"
req.AddParam("rate","ec6143e746094bcab1bdc4c17600dabf")
req.AddParam("label_file_type","PDF")
req.AddParam("async","false")

req.AddHeader("Authorization","ShippoToken <API_TOKEN>")

Dim resp As Chilkat.HttpResponse = http.PostUrlEncoded("https://api.goshippo.com/transactions",req)
If (http.LastMethodSuccess = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


Dim sbResponseBody As New Chilkat.StringBuilder
resp.GetBodySb(sbResponseBody)
Dim jResp As New Chilkat.JsonObject
jResp.LoadSb(sbResponseBody)
jResp.EmitCompact = False

Debug.WriteLine("Response Body:")
Debug.WriteLine(jResp.Emit())

Dim respStatusCode As Integer = resp.StatusCode
Debug.WriteLine("Response Status Code = " & respStatusCode)
If (respStatusCode >= 400) Then
    Debug.WriteLine("Response Header:")
    Debug.WriteLine(resp.Header)
    Debug.WriteLine("Failed.")

    Exit Sub
End If



' Sample JSON response:
' (Sample code for parsing the JSON response is shown below)

' {
'   "object_state": "VALID",
'   "status": "SUCCESS",
'   "object_created": "2013-12-27T19:14:48.273Z",
'   "object_updated": "2013-12-27T19:14:48.273Z",
'   "object_id": "64bba01845ef40d29374032599f22588",
'   "object_owner": "shippotle@goshippo.com",
'   "was_test": false,
'   "rate": {
'     "object_id": "cf6fea899f1848b494d9568e8266e076",
'     "amount": "5.50",
'     "currency": "USD",
'     "amount_local": "5.50",
'     "currency_local": "USD",
'     "provider": "USPS",
'     "servicelevel_name": "Priority Mail",
'     "servicelevel_token": "usps_priority",
'     "carrier_account": "078870331023437cb917f5187429b093"
'   },
'   "tracking_number": "ZW70QJC",
'   "tracking_status": {
'     "object_created": "2013-12-27T23:17:41.411Z",
'     "object_id": "a21b3d6831c14ceaba6730179ce6e784",
'     "status": "UNKNOWN",
'     "status_details": "",
'     "status_date": "2013-12-28T12:04:04.214Z"
'   },
'   "tracking_url_provider": "https://tools.usps.com/go/TrackConfirmAction.action?tLabels=ZW70QJC",
'   "eta": "2013-12-30T12:00:00.000Z",
'   "label_url": "https://shippo-delivery.s3.amazonaws.com/96.pdf?Signature=PEdWrp0mFWAGwJp7FW3b%2FeA2eyY%3D&Expires=1385930652&AWSAccessKeyId=AKIAJTHP3LLFMYAWALIA",
'   "commercial_invoice_url": "",
'   "metadata": "",
'   "messages": [
'   ]
' }

' Sample code for parsing the JSON response...
' Use the following online tool to generate parsing code from sample JSON:
' Generate Parsing Code from JSON




Dim object_state As String = jResp.StringOf("object_state")
Dim status As String = jResp.StringOf("status")
Dim object_created As String = jResp.StringOf("object_created")
Dim object_updated As String = jResp.StringOf("object_updated")
Dim object_id As String = jResp.StringOf("object_id")
Dim object_owner As String = jResp.StringOf("object_owner")
Dim was_test As Boolean = jResp.BoolOf("was_test")
Dim rateObject_id As String = jResp.StringOf("rate.object_id")
Dim rateAmount As String = jResp.StringOf("rate.amount")
Dim rateCurrency As String = jResp.StringOf("rate.currency")
Dim rateAmount_local As String = jResp.StringOf("rate.amount_local")
Dim rateCurrency_local As String = jResp.StringOf("rate.currency_local")
Dim rateProvider As String = jResp.StringOf("rate.provider")
Dim rateServicelevel_name As String = jResp.StringOf("rate.servicelevel_name")
Dim rateServicelevel_token As String = jResp.StringOf("rate.servicelevel_token")
Dim rateCarrier_account As String = jResp.StringOf("rate.carrier_account")
Dim tracking_number As String = jResp.StringOf("tracking_number")
Dim tracking_statusObject_created As String = jResp.StringOf("tracking_status.object_created")
Dim tracking_statusObject_id As String = jResp.StringOf("tracking_status.object_id")
Dim tracking_statusStatus As String = jResp.StringOf("tracking_status.status")
Dim tracking_statusStatus_details As String = jResp.StringOf("tracking_status.status_details")
Dim tracking_statusStatus_date As String = jResp.StringOf("tracking_status.status_date")
Dim tracking_url_provider As String = jResp.StringOf("tracking_url_provider")
Dim eta As String = jResp.StringOf("eta")
Dim label_url As String = jResp.StringOf("label_url")
Dim commercial_invoice_url As String = jResp.StringOf("commercial_invoice_url")
Dim metadata As String = jResp.StringOf("metadata")
Dim i As Integer = 0
Dim count_i As Integer = jResp.SizeOfArray("messages")
While i < count_i
    jResp.I = i
    i = i + 1
End While