Faraday exception handling

gistfile1.rb

# lib/faraday/steam_api_exceptions.rb
class SteamApiExceptions < Faraday::Middleware
  def call(env)
    begin
      @app.call(env)
      raise "this will be actually entered if everything is correct"
    rescue => e
      raise "this should be called, shouldn't it?"
    end
  end
end


# lib/steam/steam_api.rb
class SteamApi
  @steam_api_connection = Faraday.new(:url => 'https://api.steampowered.com', request: {
      open_timeout: 5,   # opening a connection
      timeout: 2         # waiting for response
    }) do |connection|
    connection.request  :url_encoded             # form-encode POST params
    connection.response :logger                  # log requests to STDOUT
    connection.adapter  Faraday.default_adapter  # make requests with Net::HTTP
    connection.use SteamApiExceptions
  end

  # i am calling this method
  def self.get_steam_avatar(steam_id, size)
    response = @steam_api_connection.get "/ISteamUser/GetPlayerSummaries/v0002/?steamids=#{steam_id}&key=#{ENV['STEAM_WEB_API_KEY']}"

    if size == 64
      key = "avatarmedium"
    elsif size == 184
      key = "avatarfull"
    else
      key = "avatar"
    end

    JSON.parse(response.body)["response"]["players"][0][key]
  end
end

# the error if i turn off internet
Faraday::ConnectionFailed at /
getaddrinfo: nodename nor servname provided, or not known