Selenium webdriver 如何使用SeleniumWebDriver自动化CEF3应用程序

我正在使用SeleniumWebDriver自动化基于CefSharp（CEF3）的应用程序，但不断出现错误

我使用以下Ruby脚本启动CEF应用程序：

require "selenium-webdriver"
cefpath = 'C:\mypathto\cefapp.exe'
Selenium::WebDriver::Chrome.path = cefpath
browser = Selenium::WebDriver.for :chrome
......

运行它时，它确实会打开CEF应用程序（Chrome的容器），但随后会遇到以下错误：

C:/Ruby200/lib/ruby/2.0.0/net/protocol.rb:158:in `rescue in rbuf_fill': Net::ReadTimeout (Net::ReadTimeout)
        from C:/Ruby200/lib/ruby/2.0.0/net/protocol.rb:152:in `rbuf_fill'
        from C:/Ruby200/lib/ruby/2.0.0/net/protocol.rb:134:in `readuntil'
        from C:/Ruby200/lib/ruby/2.0.0/net/protocol.rb:144:in `readline'
        from C:/Ruby200/lib/ruby/2.0.0/net/http/response.rb:39:in `read_status_line'
        from C:/Ruby200/lib/ruby/2.0.0/net/http/response.rb:28:in `read_new'
        from C:/Ruby200/lib/ruby/2.0.0/net/http.rb:1406:in `block in transport_request'
        from C:/Ruby200/lib/ruby/2.0.0/net/http.rb:1403:in `catch'
        from C:/Ruby200/lib/ruby/2.0.0/net/http.rb:1403:in `transport_request'
        from C:/Ruby200/lib/ruby/2.0.0/net/http.rb:1376:in `request'
        from C:/Ruby200/lib/ruby/2.0.0/net/http.rb:1369:in `block in request'
        from C:/Ruby200/lib/ruby/2.0.0/net/http.rb:852:in `start'
        from C:/Ruby200/lib/ruby/2.0.0/net/http.rb:1367:in `request'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/remote/http/default.rb:83:in `response_for'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/remote/http/default.rb:39:in `request'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/remote/http/common.rb:40:in `call'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/remote/bridge.rb:634:in `raw_execute'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/remote/bridge.rb:99:in `create_session'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/remote/bridge.rb:68:in `initialize'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/chrome/bridge.rb:29:in `initialize'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/common/driver.rb:37:in `new'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/common/driver.rb:37:in `for'
        from C:/Ruby200/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver.rb:67:in `for'

知道为什么吗

---

非常感谢。

请确保使用最新的ChromiumDriver/Selenium版本。据此：

---

CEF在ChromeDriver版本2.14和Selenium 2.44.0上运行良好。

我将ChromeDriver更新为2.14，将Selenium webdriver更新为2.44，但仍然看到相同的错误。