Xbase++
Xbase++
Generate an E-way Bill
See more HTTP Misc Examples
Demonstrates how to send an HTTP POST request to generate an e-way bill.Chilkat Xbase++ Downloads
LOCAL nSuccess
LOCAL oJsonAuth
LOCAL oJsonData
LOCAL oJsonRequestBody
LOCAL oCrypt
LOCAL oHttp
LOCAL oResp
LOCAL nRespStatusCode
LOCAL oJson
LOCAL nStatus
LOCAL oSbError
LOCAL oBdData
LOCAL oJsonBill
LOCAL nEwayBillNo
LOCAL cEwayBillDate
LOCAL cValidUpto
nSuccess := 0
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// This example uses the previously obtained access token that was retrieved
// in this example: Get EWAY Auth Token using Gstin, username, password, and app_key
oJsonAuth := CreateObject("Chilkat.JsonObject")
nSuccess := oJsonAuth:LoadFile("qa_data/tokens/ewayAuth.json")
IF (nSuccess == 0)
? oJsonAuth:LastErrorText
oJsonAuth:destroy()
RETURN
ENDIF
// The jsonAuth contains something like this:
// {
// "authToken": "IBTeFtxNfVurg71LTzZ2r0xK7",
// "decryptedSek": "5g1TyTie7yoslU3DrbYATa7mWyPazlODE7cEh5Vy4Ho="
// }
// Generate the JSON data for the e-way bill.
// The following code can be generated by pasting representative JSON into this online tool:
// Generate JSON Code
oJsonData := CreateObject("Chilkat.JsonObject")
oJsonData:UpdateString("supplyType", "O")
oJsonData:UpdateString("subSupplyType", "1")
oJsonData:UpdateString("docType", "INV")
oJsonData:UpdateString("docNo", "AW1234-2")
oJsonData:UpdateString("docDate", "05/04/2018")
oJsonData:UpdateString("fromGstin", "09ABDC24212B1FK")
oJsonData:UpdateString("fromTrdName", "willy")
oJsonData:UpdateString("fromAddr1", "3RD CROSS NO 200 19 A")
oJsonData:UpdateString("fromAddr2", "GROUND FLOOR OZZY ROAD")
oJsonData:UpdateString("fromPlace", "BUSY TOWN")
oJsonData:UpdateNumber("fromPincode", "640033")
oJsonData:UpdateNumber("actFromStateCode", "05")
oJsonData:UpdateNumber("fromStateCode", "05")
oJsonData:UpdateString("toGstin", "01AAAASCC10BBBB")
oJsonData:UpdateString("toTrdName", "mthustra")
oJsonData:UpdateString("toAddr1", "Shrek Ogre")
oJsonData:UpdateString("toAddr2", "Basadronsil")
oJsonData:UpdateString("toPlace", "Grifl Blagar")
oJsonData:UpdateNumber("toPincode", "699988")
oJsonData:UpdateNumber("actToStateCode", "29")
oJsonData:UpdateNumber("toStateCode", "02")
oJsonData:UpdateNumber("totalValue", "5609889")
oJsonData:UpdateNumber("cgstValue", "0")
oJsonData:UpdateNumber("sgstValue", "0")
oJsonData:UpdateNumber("igstValue", "168296.67")
oJsonData:UpdateNumber("cessValue", "224395.56")
oJsonData:UpdateString("transporterId", "09ABDC24212B1FK")
oJsonData:UpdateString("transporterName", "")
oJsonData:UpdateString("transDocNo", "12332")
oJsonData:UpdateNumber("transMode", "1")
oJsonData:UpdateString("transDistance", "656")
oJsonData:UpdateString("transDocDate", "10/04/2018")
oJsonData:UpdateString("vehicleNo", "PBN4567")
oJsonData:UpdateString("vehicleType", "R")
oJsonData:I := 0
oJsonData:UpdateString("itemList[i].productName", "Wheat")
oJsonData:UpdateString("itemList[i].productDesc", "Wheat")
oJsonData:UpdateNumber("itemList[i].hsnCode", "1001")
oJsonData:UpdateNumber("itemList[i].quantity", "4")
oJsonData:UpdateString("itemList[i].qtyUnit", "BOX")
oJsonData:UpdateNumber("itemList[i].cgstRate", "0")
oJsonData:UpdateNumber("itemList[i].sgstRate", "0")
oJsonData:UpdateNumber("itemList[i].igstRate", "3")
oJsonData:UpdateNumber("itemList[i].cessRate", "4")
oJsonData:UpdateNumber("itemList[i].cessAdvol", "0")
oJsonData:UpdateNumber("itemList[i].taxableAmount", "5609889")
// The body of the HTTP POST will contain JSON that looks like this:
// {
// "action":"GENEWAYBILL",
// "data": " iJiJGXq ... oUZp/25Y "
// }
// The "data" is the encrypted jsonData using our previously agreed-upon symmetric encryption key.
// Let's begin build the JSON request body..
oJsonRequestBody := CreateObject("Chilkat.JsonObject")
oJsonRequestBody:UpdateString("action", "GENEWAYBILL")
// Setup the encryptor using the decryptedSek from the jsonAuth
oCrypt := CreateObject("Chilkat.Crypt2")
oCrypt:CryptAlgorithm := "aes"
oCrypt:CipherMode := "ecb"
oCrypt:KeyLength := 256
oCrypt:SetEncodedKey(oJsonAuth:StringOf("decryptedSek"), "base64")
oCrypt:EncodingMode := "base64"
// Encrypt the jsonData and add it to our JSON request body
oJsonRequestBody:UpdateString("data", oCrypt:EncryptStringENC(oJsonData:Emit()))
oHttp := CreateObject("Chilkat.Http")
// Add the authtoken to the request header.
// Be careful to be precise with uppercase/lowercase ("authtoken" vs "authToken")
oHttp:SetRequestHeader("authtoken", oJsonAuth:StringOf("authToken"))
oHttp:SetRequestHeader("Gstin", "09ABDC24212B1FK")
oHttp:Accept := "application/json"
// POST the request to generate an e-way bill:
oResp := CreateObject("Chilkat.HttpResponse")
nSuccess := oHttp:HttpJson("POST", "http://ewb.wepgst.com/api/EWayBill", oJsonRequestBody, "application/json", oResp)
IF (nSuccess == 0)
? oHttp:LastErrorText
oJsonAuth:destroy()
oJsonData:destroy()
oJsonRequestBody:destroy()
oCrypt:destroy()
oHttp:destroy()
oResp:destroy()
RETURN
ENDIF
nRespStatusCode := oResp:StatusCode
? "response status code =" + Str(nRespStatusCode)
? "response body:"
? oResp:BodyStr
IF (nRespStatusCode != 200)
? "Failed in some unknown way."
oJsonAuth:destroy()
oJsonData:destroy()
oJsonRequestBody:destroy()
oCrypt:destroy()
oHttp:destroy()
oResp:destroy()
RETURN
ENDIF
// When the response status code = 200, we'll have either
// success response like this:
// {"status":"1","data":"..."}
//
// or a failed response like this:
//
// {"status":"0","error":"eyJlcnJvckNvZGVzIjoiMTA4In0="}
// Load the response body into a JSON object.
oJson := CreateObject("Chilkat.JsonObject")
oJson:Load(oResp:BodyStr)
nStatus := oJson:IntOf("status")
? "status = " + Str(nStatus)
IF (nStatus != 1)
// Failed. Base64 decode the error
// {"status":"0","error":"eyJlcnJvckNvZGVzIjoiMTA4In0="}
// For an invalid password, the error is: {"errorCodes":"108"}
oSbError := CreateObject("Chilkat.StringBuilder")
oJson:StringOfSb("error", oSbError)
oSbError:Decode("base64", "utf-8")
? "error: " + oSbError:GetAsString()
oJsonAuth:destroy()
oJsonData:destroy()
oJsonRequestBody:destroy()
oCrypt:destroy()
oHttp:destroy()
oResp:destroy()
oJson:destroy()
oSbError:destroy()
RETURN
ENDIF
oJson:EmitCompact := 0
? "JSON response:"
? oJson:Emit()
oBdData := CreateObject("Chilkat.BinData")
oBdData:AppendEncoded(oJson:StringOf("data"), "base64")
oCrypt:DecryptBd(oBdData)
// Decrypts to
// {"ewayBillNo":331001121234,"ewayBillDate":"24/05/2018 04:38:00 PM","validUpto":"31/05/2018 11:59:00 PM"}
oJsonBill := CreateObject("Chilkat.JsonObject")
oJsonBill:Load(oBdData:GetString("utf-8"))
nEwayBillNo := oJsonBill:IntOf("ewayBillNo")
? "ewayBillNo = " + Str(nEwayBillNo)
cEwayBillDate := oJsonBill:StringOf("ewayBillDate")
? "ewayBillDate = " + cEwayBillDate
cValidUpto := oJsonBill:StringOf("validUpto")
? "validUpto = " + cValidUpto
// Sample output:
// ewayBillNo = 331001121234
// ewayBillDate = 24/05/2018 04:55:00 PM
// validUpto = 31/05/2018 11:59:00 PM
oJsonAuth:destroy()
oJsonData:destroy()
oJsonRequestBody:destroy()
oCrypt:destroy()
oHttp:destroy()
oResp:destroy()
oJson:destroy()
oSbError:destroy()
oBdData:destroy()
oJsonBill:destroy()