Capybara, Selen, Headless Chrome, Ubuntu Net :: ReadTimeout

Question

Ich sah eine sehr ähnliche Frage an meine. Alles funktioniert gut unter OS X, wirft aber Fehler auf Ubuntu 14.04. Wenn ich diesen Beitrag zurückverfolge, erhalte ich denselben Fehler. Das Originalposter gab auf und benutzte stattdessen Poltergeist/PhantomJS. Ich möchte, dass dies jetzt mit Chrome funktioniert, da PhantomJS nicht mehr gewartet wird.

Net::ReadTimeout: Net::ReadTimeout and Selenium::WebDriver::Error::UnknownError: unknown error: Chrome failed to start on Rails 5.1.beta System Test

Hier sind meine Schritte auf Ubuntu installieren:

apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 40976EAF437D05B5 
wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add - 
cat <<EOF > /etc/apt/sources.list.d/google-chrome.list 
deb http://dl.google.com/linux/chrome/deb/ stable main 
EOF 
apt-get update 
apt-get install --force-yes -y google-chrome-stable 
cd /root/ && curl -O "http://chromedriver.storage.googleapis.com/2.32/chromedriver_linux64.zip" 
cd /root/ && unzip chromedriver_linux64.zip && cp chromedriver /usr/bin 

Einen Schritt zu einer Zeit, bestätigte ich google-chrome, chromedriver korrekt installiert und funktionieren. Selenium-Treiber funktioniert auch gut.

link = ENV['LINK'] || "https://www.amazon.com" 
#https://stackoverflow.com/questions/44424200/how-do-i-use-selenium-webdriver-on-headless-chrome 
Selenium::WebDriver::Chrome.driver_path="/usr/bin/chromedriver" if RUBY_PLATFORM.include? "linux" 
options = %w[--headless --disable-gpu] 
options += %w[--binary='/usr/bin/google-chrome'] if RUBY_PLATFORM.include? "linux" 
driver = Selenium::WebDriver.for :chrome, switches: options 
driver.navigate.to "#{link}" 
driver.save_screenshot("./screen.png") 
driver.quit 

Die Capybara Testzeiten, während die URL besuchen.

require 'capybara' 
include Capybara::DSL 

link = ENV['LINK'] || "https://www.amazon.com" 
options = %w[--headless --disable-gpu] 
options += %w[--binary='/usr/bin/google-chrome'] if RUBY_PLATFORM.include? "linux" 
Selenium::WebDriver::Chrome.driver_path="/usr/bin/chromedriver" if RUBY_PLATFORM.include? "linux" 
Capybara.register_driver(:headless_chrome) do |app| 
    capabilities = Selenium::WebDriver::Remote::Capabilities.chrome(chromeOptions: { args: options }) 
    Capybara::Selenium::Driver.new(app, browser: :chrome, desired_capabilities: capabilities) 
end 
Capybara.javascript_driver = :headless_chrome 
session = Capybara::Session.new(:headless_chrome) 
session.visit "#{link}" 

Der Fehler ist der folgende msg:

session.visit "#{link}"

Net::ReadTimeout: Net::ReadTimeout 
    from /usr/lib/ruby/2.3.0/net/protocol.rb:158:in `rbuf_fill' 
    from /usr/lib/ruby/2.3.0/net/protocol.rb:136:in `readuntil' 
    from /usr/lib/ruby/2.3.0/net/protocol.rb:146:in `readline' 
    from /usr/lib/ruby/2.3.0/net/http/response.rb:40:in `read_status_line' 
    from /usr/lib/ruby/2.3.0/net/http/response.rb:29:in `read_new' 
    from /usr/lib/ruby/2.3.0/net/http.rb:1437:in `block in transport_request' 
    from /usr/lib/ruby/2.3.0/net/http.rb:1434:in `catch' 
    from /usr/lib/ruby/2.3.0/net/http.rb:1434:in `transport_request' 
    from /usr/lib/ruby/2.3.0/net/http.rb:1407:in `request' 
    from /usr/lib/ruby/2.3.0/net/http.rb:1400:in `block in request' 
    from /usr/lib/ruby/2.3.0/net/http.rb:853:in `start' 
    from /usr/lib/ruby/2.3.0/net/http.rb:1398:in `request' 
    from /var/www/railsapp/vendor/bundle/ruby/2.3.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/http/default.rb:107:in `response_for' 
    from /var/www/railsapp/vendor/bundle/ruby/2.3.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/http/default.rb:58:in `request' 
    from /var/www/railsapp/vendor/bundle/ruby/2.3.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/http/common.rb:59:in `call' 
    from /var/www/railsapp/vendor/bundle/ruby/2.3.0/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/bridge.rb:649:in `raw_execute' 
... 10 levels... 
    from /usr/bin/irb:11:in `<top (required)>' 
    from /usr/lib/ruby/gems/2.3.0/gems/bundler-1.13.6/lib/bundler/cli/exec.rb:74:in `load' 
    from /usr/lib/ruby/gems/2.3.0/gems/bundler-1.13.6/lib/bundler/cli/exec.rb:74:in `kernel_load' 
    from /usr/lib/ruby/gems/2.3.0/gems/bundler-1.13.6/lib/bundler/cli/exec.rb:27:in `run' 
    from /usr/lib/ruby/gems/2.3.0/gems/bundler-1.13.6/lib/bundler/cli.rb:332:in `exec' 
    from /usr/lib/ruby/gems/2.3.0/gems/bundler-1.13.6/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run' 
    from /usr/lib/ruby/gems/2.3.0/gems/bundler-1.13.6/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command' 
    from /usr/lib/ruby/gems/2.3.0/gems/bundler-1.13.6/lib/bundler/vendor/thor/lib/thor.rb:359:in `dispatch' 
    from /usr/lib/ruby/gems/2.3.0/gems/bundler-1.13.6/lib/bundler/cli.rb:20:in `dispatch' 
    from /usr/lib/ruby/gems/2.3.0/gems/bundler-1.13.6/lib/bundler/vendor/thor/lib/thor/base.rb:440:in `start' 
    from /usr/lib/ruby/gems/2.3.0/gems/bundler-1.13.6/lib/bundler/cli.rb:11:in `start' 
    from /usr/lib/ruby/gems/2.3.0/gems/bundler-1.13.6/exe/bundle:34:in `block in <top (required)>' 
    from /usr/lib/ruby/gems/2.3.0/gems/bundler-1.13.6/lib/bundler/friendly_errors.rb:100:in `with_friendly_errors' 
    from /usr/lib/ruby/gems/2.3.0/gems/bundler-1.13.6/exe/bundle:26:in `<top (required)>' 
    from /usr/bin/bundle:23:in `load' 
    from /usr/bin/bundle:23:in `<main>' 

Answer 1

Headless Chrome und die chromedriver, dass es relativ neu unterstützen. Aktualisieren Sie Ihren Selen-Webdriver auf die neuesten Versionen (3.5.2 ab dieser Antwort), um Unterstützung dafür zu haben. Sobald Sie das getan haben, wenn Sie die neueste Capybara verwenden, können Sie auch versuchen, nur das Capybara unter Verwendung der bereitgestellten registrierten Fahrer, mit

if RUBY_PLATFORM.include? "linux" 
    Selenium::WebDriver::Chrome.driver_path = "/usr/bin/chromedriver" 
    Selenium::WebDriver::Chrome.path = "/usr/bin/google-chrome" 
end 
Capybara.javascript_driver = :selenium_chrome_headless 

statt, um Ihre eigenen Treiber zu registrieren.