An example on how to configure Faraday for SSL using client certificates, a private key, and a certificate authority file. This can help if you're getting errors like: TypeError (wrong argument type String (expected OpenSSL/X509))

faraday_ssl_example.rb

# Taken from https://gist.github.com/mdeiters/975231?permalink_comment_id=3015720#gistcomment-3015720
def self.ping
  connection = Faraday::Connection.new 'https://host:443/ping', ssl: {
    ca_file: 'config/credentials/ROOT_CA.cer',
    client_key: OpenSSL::PKey::RSA.new(File.read('config/credentials/client.key')),
    client_cert: OpenSSL::X509::Certificate.new(File.read('config/credentials/agent.cer'))
  }
  connection.get.body
end