Authorization to google drive api using Ruby - ruby

Question

I want to make a simple application (like a Service account -in google api console) which send a file to an google drive.
I have got code like this:
require 'rubygems'
require 'google/api_client'
require 'launchy'
#extra
gem 'oauth2'
gem 'omniauth'
client = Google::APIClient.new({:application_name => "testdevelop",:application_version => "1.0"})
drive = client.discovered_api('drive', 'v2')
####################################################################################
# Initialize OAuth 2.0 client
# client.authorization.client_id = '111062272758.apps.googleusercontent.com'
# client.authorization.client_secret = 's8j3VQwCvlyz2Hcpr06xrVfr'
# client.authorization.redirect_uri = 'urn:ietf:wg:oauth:2.0:oob'
# client.authorization.scope = 'https://www.googleapis.com/auth/drive'
# uri = client.authorization.authorization_uri
# Launchy.open(uri)
# $stdout.write "Enter authorization code: "
# client.authorization.code = gets.chomp
# client.authorization.fetch_access_token!
####################################################################################
key = Google::APIClient::KeyUtils.load_from_pkcs12('12355eaee706eb725ff5dd890b5c2bc39d536a53-privatekey.p12', 'notasecret')
client.authorization = Signet::OAuth2::Client.new(
:token_credential_uri => 'https://accounts.google.com/o/oauth2/token',
:audience => 'https://accounts.google.com/o/oauth2/token',
:scope => 'https://www.googleapis.com/auth/prediction',
:issuer => '312062272758-bg7s7ts9f3m11hjetboodre6hfg4qp8q#developer.gserviceaccount.com',
:signing_key => key)
client.authorization.fetch_access_token!
#####################################################################################
# Make an API call
# Insert a file
file = drive.files.insert.request_schema.new({
'title' => 'My document',
'description' => 'A test document',
'mimeType' => 'text/plain'
})
media = Google::APIClient::UploadIO.new('document.txt', 'text/plain')
result = client.execute(
:api_method => drive.files.insert,
:body_object => file,
:media => media,
:parameters => {
'uploadType' => 'multipart',
'alt' => 'json'})
# Pretty print the API result
jj result.data.to_hash
When I run it i got an error
`rescue in rbuf_fill': Timeout::Error (Faraday::Error::TimeoutError)
When I uncomment commented code and comment code between line of ############## It is possible to send a file into gDrive but I must enter the authorization code from web browser.
I want to do it automaticly thats i decided to use gDrive like a Service account
I have tried to increase connection time out by adding lines:
conn = Faraday.default_connection
conn.options[:timeout] = 500
and ofcourse with connection: conn after parametrs in request but i have got another error
`sysread_nonblock': end of file reached
(Faraday::Error::ConnectionFailed)

Answer 1

the (ssl)-certificate is missing.
how to fix: https://gist.github.com/fnichol/867550