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(Unicode C) Google Drive - Resumable UploadDemonstrates how to do a resumable upload to Google Drive. For more information, see https://developers.google.com/drive/api/v3/manage-uploads#resumable
#include <C_CkHttpW.h> #include <C_CkJsonObjectW.h> #include <C_CkHttpResponseW.h> #include <C_CkStringBuilderW.h> #include <C_CkHttpRequestW.h> #include <C_CkUrlW.h> void ChilkatSample(void) { BOOL success; HCkHttpW http; HCkJsonObjectW json; HCkHttpResponseW resp; int statusCode; HCkStringBuilderW sbSessionUri; const wchar_t *sessionUri; HCkHttpRequestW req; HCkUrlW url; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. success = TRUE; // This example uses a previously obtained access token having permission for the // Google Drive scope. // See Get Google Drive OAuth2 Access Token http = CkHttpW_Create(); CkHttpW_putAuthToken(http,L"GOOGLE_DRIVE_ACCESS_TOKEN"); // First we want to initiate the resumable upload. // We send a POST to get a session URI, which will be used to upload the file, and resume if needed. // Our POST will look like this: // POST https://www.googleapis.com/upload/drive/v3/files?uploadType=resumable HTTP/1.1 // Authorization: Bearer [YOUR_AUTH_TOKEN] <-- Chilkat automatically adds this header because the AuthToken property was set. // Content-Length: 38 <-- Chilkat will automatically add this header. // Content-Type: application/json; charset=UTF-8 <-- This is the type of this POST, and is specified in the call to PostJson3. // X-Upload-Content-Type: application/zip <-- The type of file we'll be uploading // X-Upload-Content-Length: 1366807 <-- The size of the file we'll be uploading // // { // "name": "myObject" // } CkHttpW_SetRequestHeader(http,L"X-Upload-Content-Type",L"application/zip"); CkHttpW_SetRequestHeader(http,L"X-Upload-Content-Length",L"1366807"); json = CkJsonObjectW_Create(); CkJsonObjectW_UpdateString(json,L"name",L"myZip"); resp = CkHttpW_PostJson3(http,L"https://www.googleapis.com/upload/drive/v3/files?uploadType=resumable",L"application/json",json); if (CkHttpW_getLastMethodSuccess(http) == FALSE) { wprintf(L"%s\n",CkHttpW_lastErrorText(http)); CkHttpW_Dispose(http); CkJsonObjectW_Dispose(json); return; } statusCode = CkHttpResponseW_getStatusCode(resp); if (statusCode != 200) { wprintf(L"%s\n",CkHttpResponseW_bodyStr(resp)); wprintf(L"response status = %d\n",statusCode); CkHttpW_Dispose(http); CkJsonObjectW_Dispose(json); return; } // The session URI is in the "Location" response header: sbSessionUri = CkStringBuilderW_Create(); CkStringBuilderW_Append(sbSessionUri,CkHttpResponseW_getHeaderField(resp,L"Location")); sessionUri = CkStringBuilderW_getAsString(sbSessionUri); wprintf(L"Session URI: %s\n",sessionUri); CkHttpResponseW_Dispose(resp); // Here's a sample session URI: https://www.googleapis.com/upload/drive/v3/files?uploadType=resumable&upload_id=AEnB2UrszR8lDqlo3mtXJw_0rYI_Hi1oVh1NPFcLfoyBq9NcSjk85kFopoZaVEgT38OSmLl0XsObPf4iCSJwHlrOvvIJQ_ckIQ // ----------------------------------------------------------------------------- // The next step is to upload the file using the session URI: // We'll send a PUT that looks like this: // PUT https://www.googleapis.com/upload/drive/v3/files?uploadType=resumable&upload_id=xa298sd_sdlkj2 HTTP/1.1 // Content-Length: 1366807 // Content-Type: application/zip // // [BYTES 0-1366806] // First remove the X-Upload-Content-Type and X-Upload-Content-Length request headers we specified earlier, so they don't get sent with subsequent requests. CkHttpW_ClearHeaders(http); // Because the file is likely large, we'll use SynchronousRequest which allows to to pass an HTTP request object where the body can be streamed directly from a file. req = CkHttpRequestW_Create(); CkHttpRequestW_putContentType(req,L"application/zip"); CkHttpRequestW_putHttpVerb(req,L"PUT"); url = CkUrlW_Create(); CkUrlW_ParseUrl(url,sessionUri); CkHttpRequestW_putPath(req,CkUrlW_pathWithQueryParams(url)); wprintf(L"Path with Query Param: %s\n",CkUrlW_pathWithQueryParams(url)); // Specify that the request body is to be streamed directly from a file. success = CkHttpRequestW_StreamBodyFromFile(req,L"qa_data/zips/big.zip"); if (success == FALSE) { wprintf(L"%s\n",CkHttpRequestW_lastErrorText(req)); CkHttpW_Dispose(http); CkJsonObjectW_Dispose(json); CkStringBuilderW_Dispose(sbSessionUri); CkHttpRequestW_Dispose(req); CkUrlW_Dispose(url); return; } resp = CkHttpW_SynchronousRequest(http,CkUrlW_host(url),CkUrlW_getPort(url),CkUrlW_getSsl(url),req); if (CkHttpW_getLastMethodSuccess(http) == FALSE) { wprintf(L"%s\n",CkHttpW_lastErrorText(http)); CkHttpW_Dispose(http); CkJsonObjectW_Dispose(json); CkStringBuilderW_Dispose(sbSessionUri); CkHttpRequestW_Dispose(req); CkUrlW_Dispose(url); return; } wprintf(L"%s\n",CkHttpResponseW_bodyStr(resp)); wprintf(L"response status = %d\n",statusCode); // Sample output: // { // "kind": "drive#file", // "id": "1rx20i53eurtkVQ-RT7Ry8Ct85PgPYMET", // "name": "myZip", // "mimeType": "application/zip" // } // // response status = 200 CkHttpResponseW_Dispose(resp); CkHttpW_Dispose(http); CkJsonObjectW_Dispose(json); CkStringBuilderW_Dispose(sbSessionUri); CkHttpRequestW_Dispose(req); CkUrlW_Dispose(url); } |
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