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Visual FoxPro Examples

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(Visual FoxPro) 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.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

LOCAL loRest
LOCAL lnBTls
LOCAL lnPort
LOCAL lnBAutoReconnect
LOCAL lnSuccess
LOCAL loJson
LOCAL loSbRequestBody
LOCAL loSbResponseBody
LOCAL loBdRequest

* 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.

loRest = CreateObject('Chilkat_9_5_0.Rest')

* Connect Code...
* URL: https://test-api.service.hmrc.gov.uk/organisations/vat/MY_HMRC_VRN/returns
lnBTls = 1
lnPort = 443
lnBAutoReconnect = 1
lnSuccess = loRest.Connect("test-api.service.hmrc.gov.uk",lnPort,lnBTls,lnBAutoReconnect)
IF (lnSuccess <> 1) THEN
    ? "ConnectFailReason: " + STR(loRest.ConnectFailReason)
    ? loRest.LastErrorText
    RELEASE loRest
    CANCEL
ENDIF

* Build the request body...
loJson = CreateObject('Chilkat_9_5_0.JsonObject')
loJson.UpdateString("periodKey","A001")
loJson.UpdateNumber("vatDueSales","105.50")
loJson.UpdateNumber("vatDueAcquisitions","-100.45")
loJson.UpdateNumber("totalVatDue","5.05")
loJson.UpdateNumber("vatReclaimedCurrPeriod","105.15")
loJson.UpdateNumber("netVatDue","100.10")
loJson.UpdateInt("totalValueSalesExVAT",300)
loJson.UpdateInt("totalValuePurchasesExVAT",300)
loJson.UpdateInt("totalValueGoodsSuppliedExVAT",3000)
loJson.UpdateInt("totalAcquisitionsExVAT",3000)
loJson.UpdateBool("finalised",1)

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

loSbRequestBody = CreateObject('Chilkat_9_5_0.StringBuilder')
loJson.EmitSb(loSbRequestBody)

* Set DebugMode so that no request is actually sent.
loRest.DebugMode = 1

loSbResponseBody = CreateObject('Chilkat_9_5_0.StringBuilder')
lnSuccess = loRest.FullRequestSb("POST","/organisations/vat/MY_HMRC_VRN/returns",loSbRequestBody,loSbResponseBody)
IF (lnSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loRest
    RELEASE loJson
    RELEASE loSbRequestBody
    RELEASE loSbResponseBody
    CANCEL
ENDIF

* 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..
loBdRequest = CreateObject('Chilkat_9_5_0.BinData')
lnSuccess = loRest.GetLastDebugRequest(loBdRequest)

? "----"
? loBdRequest.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}
* 
* 

RELEASE loRest
RELEASE loJson
RELEASE loSbRequestBody
RELEASE loSbResponseBody
RELEASE loBdRequest


 

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