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Capybaraで「Request failed to reach server, check DNS and/or server status」のエラー

Capybaraで「Request failed to reach server, check DNS and/or server status」のエラー

更新日:2021.02.11 作成日:2015.07.25

現象

Capybaraでhttpsのサイトにvisit(’’)したときに、以下のエラーが発生する。

Request failed to reach server, check DNS and/or server status

/usr/local/lib/ruby/gems/2.1.0/gems/poltergeist-1.6.0/lib/capybara/poltergeist/browser.rb:323:in `command': Request failed to reach server, check DNS and/or server status (Capybara::Poltergeist::StatusFailError)
	from /usr/local/lib/ruby/gems/2.1.0/gems/poltergeist-1.6.0/lib/capybara/poltergeist/browser.rb:31:in `visit'
	from /usr/local/lib/ruby/gems/2.1.0/gems/poltergeist-1.6.0/lib/capybara/poltergeist/driver.rb:95:in `visit'
	from /usr/local/lib/ruby/gems/2.1.0/gems/capybara-2.4.4/lib/capybara/session.rb:227:in `visit'
	from /usr/local/lib/ruby/gems/2.1.0/gems/capybara-2.4.4/lib/capybara/dsl.rb:51:in `block (2 levels) in <module:DSL>'
	from itunes.rb:24:in `login'
	from itunes.rb:61:in `<main>'

原因

SSLの通信にエラーが起きてるため。

The problem is most likely due to SSL certificate errors. If you start phantomjs with the –ignore-ssl-errors=yes option, it should proceed to load the page as it would if there were no SSL errors: screen scraping - PhantomJS failing to open HTTPS site - Stack Overflow

対処法

以下のオプションを設定することで解決した。

phantomjs_options: [’–ignore-ssl-errors=yes']

上記オブションのみで解決しない場合は、--load-images=no, --ssl-protocol=anyのオプションも試してみるとよいとのこと。

Capybara.register_driver :poltergeist do |app|
  Capybara::Poltergeist::Driver.new(app, {
                    js_errors: false,
                    timeout: 1000,
                    phantomjs_options: [
                              '--load-images=no',
                              '--ignore-ssl-errors=yes',
                              '--ssl-protocol=any']})
end