Lua Requires Chilkat v11.0.0+

S3 Upload with Transfer Acceleration

See more Amazon S3 Examples

Demonstrates how to upload from a pre-signed URL with transfer acceleration. Lua

local chilkat = require("chilkat")

-- This example requires the Chilkat API to have been previously unlocked.
-- See Global Unlock Sample for sample code.

local http = chilkat.Http.new()

http.aws_access_key = "AWS_ACCESS_KEY"
http.aws_secret_key = "AWS_SECRET_KEY"

-- Make sure to set your AWS region correctly
http.aws_region = "us-east-1"
local bucketName = "chilkat200"
local objectName = "starfish/starfish.jpg"
local awsService = "s3"
local 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.
http.aws_endpoint = "s3-accelerate.amazonaws.com"

-- The signed URL will be valid for this number of seconds:
local numSecondsValid = 86400

-- Choose between a URL beginning with "http://" or "https://"...
local bUseHttps = true

-- Generate the pre-signed URL that will use s3-accelerate.amazonaws.com
local preSignedUrl = http:s3_gen_presigned_url(httpVerb, bUseHttps, bucketName, objectName, numSecondsValid, awsService)
if not http.last_method_success then
    print(http.last_error_text)
    return
end

-- The following URL can be copy-and-pasted into a browser..
print("Presigned URL for Upload: " .. 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.)
local resp = chilkat.HttpResponse.new()
local success = http:http_file("PUT", preSignedUrl, "qa_data/jpg/starfish.jpg", "image/jpg", resp)
if not success then
    print(http.last_error_text)
    return
end

print("response status code = " .. resp.status_code)
print("response body size: " .. resp.content_length)
if resp.content_length > 0 then
    print("response body:")
    print(resp.body_str)
end