Rust Requires Chilkat v11.0.0+

Generate an AWS (S3) Pre-Signed URL to Download File

See more Amazon S3 (new) Examples

Demonstrates how to generate a pre-signed URL to download a file from the Amazon S3 service. Rust

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

let http = chilkat::Http::new();

http.set_aws_access_key("AWS_ACCESS_KEY");
http.set_aws_secret_key("AWS_SECRET_KEY");

// Make sure to set your AWS region correctly
http.set_aws_region("us-east-1");

let bucket_name = "chilkat100".to_string();
let object_name = "starfish/starfish.jpg".to_string();
let local_file_path = "qa_output/starfish.jpg".to_string();
let aws_service = "s3".to_string();

// The signed URL will be valid for this number of seconds:
let num_seconds_valid = 86400;

// Choose between a URL beginning with "http://" or "https://"...
let b_use_https = false;

// Generate the pre-signed URL
let Ok(pre_signed_url) = http.s3_gen_presigned_url("GET", b_use_https, &bucket_name, &object_name, num_seconds_valid, &aws_service) else {
    println!("{}", http.last_error_text());
    return;
};

// The following URL can be copy-and-pasted into a browser..
println!("Pre-Signed AWS S3 URL: {}", pre_signed_url);

// Here's an example of a pre-signed URL. 
// This URL will only work within 1 day (86400 seconds) after the time this example was published.
// 
//     http://chilkat100.s3.amazonaws.com/starfish/starfish.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=16QXXDGY83AJJR6RVQ02%2F20170111%2Fus-west-2%2Fs3%2Faws4_request&X-Amz-Date=20170111T161959Z&X-Amz-Expires=86400&X-Amz-SignedHeaders=host&X-Amz-Signature=72bf4fd9a15d7bbcdd313a3318d937a778905f62a3fbff9b789d8dc28acd9232

// Now try to do an HTTP Download using the signed URL.
if http.download(&pre_signed_url, "c:/temp/qa_output/starfish.jpg").is_err() {
    println!("{}", http.last_error_text());
    return;
}

println!("Success.");