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(C) S3 Upload with Transfer AccelerationDemonstrates how to upload from a pre-signed URL with transfer acceleration. Note: This example requires Chilkat v9.5.0.83 or greater.
#include <C_CkHttp.h> #include <C_CkHttpResponse.h> void ChilkatSample(void) { HCkHttp http; const char *bucketName; const char *objectName; const char *awsService; const char *httpVerb; int numSecondsValid; BOOL bUseHttps; const char *preSignedUrl; HCkHttpResponse resp; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // Note: This example requires Chilkat v9.5.0.83 or greater. http = CkHttp_Create(); CkHttp_putAwsAccessKey(http,"AWS_ACCESS_KEY"); CkHttp_putAwsSecretKey(http,"AWS_SECRET_KEY"); // Make sure to set your AWS region correctly CkHttp_putAwsRegion(http,"us-east-1"); bucketName = "chilkat200"; objectName = "starfish/starfish.jpg"; awsService = "s3"; httpVerb = "PUT"; // To use S3 acceleration, we simply set the AwsEndpoint to "s3-accelerate.amazonaws.com". // Note: You must enable transfer acceleration on your bucket. Acceleration incurs a higher cost. CkHttp_putAwsEndpoint(http,"s3-accelerate.amazonaws.com"); // The signed URL will be valid for this number of seconds: numSecondsValid = 86400; // Choose between a URL beginning with "http://" or "https://"... bUseHttps = FALSE; // Generate the pre-signed URL that will use s3-accelerate.amazonaws.com preSignedUrl = CkHttp_s3_GenPresignedUrl(http,httpVerb,bUseHttps,bucketName,objectName,numSecondsValid,awsService); if (CkHttp_getLastMethodSuccess(http) == FALSE) { printf("%s\n",CkHttp_lastErrorText(http)); CkHttp_Dispose(http); return; } // The following URL can be copy-and-pasted into a browser.. printf("Presigned URL for Upload: %s\n",preSignedUrl); // Here's an example of a pre-signed URL // // http://chilkat200.s3-accelerate.amazonaws.com/starfish/starfish.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIBJLOVZVXAU2AFUA%2F20200623%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20200623T234049Z&X-Amz-Expires=86400&X-Amz-SignedHeaders=host&X-Amz-Signature=xxxxxeaea071178d772856c0a4e4c0114a8d9992f0d0812955e490d0exxxxxxx // // Upload a local file using the pre-signed URL. // (Chilkat provides other methods to upload file data directly from binary or text data in memory.) resp = CkHttp_PFile(http,"PUT",preSignedUrl,"qa_data/jpg/starfish.jpg","image/jpg",FALSE,FALSE); if (CkHttp_getLastMethodSuccess(http) == FALSE) { printf("%s\n",CkHttp_lastErrorText(http)); CkHttp_Dispose(http); return; } printf("response status code = %d\n",CkHttpResponse_getStatusCode(resp)); printf("response body size: %d\n",CkHttpResponse_getContentLength(resp)); if (CkHttpResponse_getContentLength(resp) > 0) { printf("response body:\n"); printf("%s\n",CkHttpResponse_bodyStr(resp)); } CkHttpResponse_Dispose(resp); CkHttp_Dispose(http); } |
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