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(Unicode C) Debug REST HTTP RequestDemonstrates 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.
#include <C_CkRestW.h> #include <C_CkJsonObjectW.h> #include <C_CkStringBuilderW.h> #include <C_CkBinDataW.h> void ChilkatSample(void) { HCkRestW rest; BOOL bTls; int port; BOOL bAutoReconnect; BOOL success; HCkJsonObjectW json; HCkStringBuilderW sbRequestBody; HCkStringBuilderW sbResponseBody; HCkBinDataW bdRequest; // 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 = CkRestW_Create(); // Connect Code... // URL: https://test-api.service.hmrc.gov.uk/organisations/vat/MY_HMRC_VRN/returns bTls = TRUE; port = 443; bAutoReconnect = TRUE; success = CkRestW_Connect(rest,L"test-api.service.hmrc.gov.uk",port,bTls,bAutoReconnect); if (success != TRUE) { wprintf(L"ConnectFailReason: %d\n",CkRestW_getConnectFailReason(rest)); wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkRestW_Dispose(rest); return; } // Build the request body... json = CkJsonObjectW_Create(); CkJsonObjectW_UpdateString(json,L"periodKey",L"A001"); CkJsonObjectW_UpdateNumber(json,L"vatDueSales",L"105.50"); CkJsonObjectW_UpdateNumber(json,L"vatDueAcquisitions",L"-100.45"); CkJsonObjectW_UpdateNumber(json,L"totalVatDue",L"5.05"); CkJsonObjectW_UpdateNumber(json,L"vatReclaimedCurrPeriod",L"105.15"); CkJsonObjectW_UpdateNumber(json,L"netVatDue",L"100.10"); CkJsonObjectW_UpdateInt(json,L"totalValueSalesExVAT",300); CkJsonObjectW_UpdateInt(json,L"totalValuePurchasesExVAT",300); CkJsonObjectW_UpdateInt(json,L"totalValueGoodsSuppliedExVAT",3000); CkJsonObjectW_UpdateInt(json,L"totalAcquisitionsExVAT",3000); CkJsonObjectW_UpdateBool(json,L"finalised",TRUE); // Add Headers... CkRestW_AddHeader(rest,L"Accept",L"application/vnd.hmrc.1.0+json"); CkRestW_AddHeader(rest,L"Authorization",L"Bearer HMRC_ACCESS_TOKEN"); CkRestW_AddHeader(rest,L"Content-Type",L"application/json"); sbRequestBody = CkStringBuilderW_Create(); CkJsonObjectW_EmitSb(json,sbRequestBody); // Set DebugMode so that no request is actually sent. CkRestW_putDebugMode(rest,TRUE); sbResponseBody = CkStringBuilderW_Create(); success = CkRestW_FullRequestSb(rest,L"POST",L"/organisations/vat/MY_HMRC_VRN/returns",sbRequestBody,sbResponseBody); if (success != TRUE) { wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkRestW_Dispose(rest); CkJsonObjectW_Dispose(json); CkStringBuilderW_Dispose(sbRequestBody); CkStringBuilderW_Dispose(sbResponseBody); return; } // 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 = CkBinDataW_Create(); success = CkRestW_GetLastDebugRequest(rest,bdRequest); wprintf(L"----\n"); wprintf(L"%s\n",CkBinDataW_getString(bdRequest,L"utf-8")); wprintf(L"----\n"); // 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} // // CkRestW_Dispose(rest); CkJsonObjectW_Dispose(json); CkStringBuilderW_Dispose(sbRequestBody); CkStringBuilderW_Dispose(sbResponseBody); CkBinDataW_Dispose(bdRequest); } |
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