How to enable remote debugging with headless chrome when using ruby and selenium?

Question

When I set the option "--remote-debugging-port", it will throw an error. And without this option, it can work properly. However, I want to debug when using the headless chrome. How can I do ?

.rvm/rubies/ruby-2.2.5/lib/ruby/2.2.0/net/protocol.rb:158:in `rescue in rbuf_fill': Net::ReadTimeout (Net::ReadTimeout)

Here is my code:

options = Selenium::WebDriver::Chrome::Options.new
options.add_argument('--headless')
options.add_argument('--disable-gpu')
options.add_argument('--remote-debugging-port') # debug
@driver = Selenium::WebDriver.for(:chrome, options: options)
puts @driver.manage.logs.get :browser

Answer 1

As per Getting Started with Headless Chrome to enable remote-debugging you can add the argument remote-debugging-port through Selenium::WebDriver::Chrome::Options.new which will help in:

Navigating to http://localhost:9222 in another browser to open the DevTools interface or use a tool such as Selenium to drive the headless browser.

options = Selenium::WebDriver::Chrome::Options.new
options.add_argument('--headless')
options.add_argument('--disable-gpu')
options.add_argument('--remote-debugging-port=9222')
@driver = Selenium::WebDriver.for(:chrome, options: options)
puts @driver.manage.logs.get :browser