gistfile1.txt

require 'aws-sdk-s3'
require 'net/http'

creds = Aws::Credentials.new('', '')
s3 = Aws::S3::Resource.new(
    credentials: creds,
    endpoint: 'https://storage.yandexcloud.net',
    region: 'us-east-1'
)

obj = s3.bucket('cb15').object('test.txt')
url = URI.parse(obj.presigned_url(:put))
body = "Hello World!"

puts url
Net::HTTP.start(url.host) do |http|
  http.send_request("PUT", url.request_uri, body, {"content-type" => "",})
end

puts obj.get.body.read