(Objective-C) Generate S3 Signed URL

Demonstrates how to generate a pre-signed S3 URL.

Note: This example requires Chilkat v11.0.0 or greater.

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#import <CkoHttp.h>
#import <NSString.h>

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

CkoHttp *http = [[CkoHttp alloc] init];

// Insert your access key here:
http.AwsAccessKey = @"AWS_ACCESS_KEY";

// Insert your secret key here:
http.AwsSecretKey = @"AWS_SECRET_KEY";

http.AwsRegion = @"us-west-2";
http.AwsEndpoint = @"s3-us-west-2.amazonaws.com";

NSString *bucketName = @"chilkattest";
NSString *path = @"starfish.jpg";

NSString *signedUrl = [http S3_GenPresignedUrl: @"GET" useHttps: YES bucketName: bucketName path: path numSecondsValid: [NSNumber numberWithInt: 3600] awsService: @"s3"];
if (http.LastMethodSuccess == NO) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

NSLog(@"%@",signedUrl);