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(Xojo Plugin) Create S3 Pre-Signed URL for UploadDemonstrates how to generate a pre-signed URL for S3 uploads.
// 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. Dim http As New Chilkat.Http http.AwsAccessKey = "AWS_ACCESS_KEY" http.AwsSecretKey = "AWS_SECRET_KEY" // Make sure to set your AWS region correctly http.AwsRegion = "us-east-1" Dim bucketName As String bucketName = "chilkat200" Dim objectName As String objectName = "starfish/starfish.jpg" Dim awsService As String awsService = "s3" Dim httpVerb As String httpVerb = "PUT" // The signed URL will be valid for this number of seconds: Dim numSecondsValid As Int32 numSecondsValid = 86400 // Choose between a URL beginning with "http://" or "https://"... Dim bUseHttps As Boolean bUseHttps = False // Generate the pre-signed URL Dim preSignedUrl As String preSignedUrl = http.S3_GenPresignedUrl(httpVerb,bUseHttps,bucketName,objectName,numSecondsValid,awsService) If (http.LastMethodSuccess = False) Then System.DebugLog(http.LastErrorText) Return End If System.DebugLog("Presigned URL for Upload: " + preSignedUrl) // Here's an example of a pre-signed URL // // http://chilkat200.s3.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 // // You can use the pre-signed URL to upload from Chilkat // For example, upload by streaming from a local file Dim resp As Chilkat.HttpResponse resp = http.PFile("PUT",preSignedUrl,"qa_data/jpg/starfish.jpg","image/jpg",False,False) If (http.LastMethodSuccess = False) Then System.DebugLog(http.LastErrorText) Return End If System.DebugLog("response status code = " + Str(resp.StatusCode)) System.DebugLog("response body size: " + Str(resp.ContentLength)) If (resp.ContentLength > 0) Then System.DebugLog("response body:") System.DebugLog(resp.BodyStr) End If |
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