连接拒绝使用幻影的Watir网络驱动程序

Question

我对运行在线程中的Watir有一个问题。基本上看起来是这样的:我正在创建线程(假设有三个线程)。然后我正在创建新的浏览器，访问网页并试图关闭此浏览器。所有事情都正常工作了2-3个小时，然后我得到了这个错误(browser.close导致了这个错误)：

Errno::ECONNREFUSED: Connection refused - Connection refused
       initialize at org/jruby/ext/socket/RubyTCPSocket.java:124
             open at org/jruby/RubyIO.java:1123
 block in connect at /home/ubuntu/.rvm/rubies/jruby-9.0.4.0/lib/ruby/stdlib/net/http.rb:883
          timeout at org/jruby/ext/timeout/Timeout.java:128
          connect at /home/ubuntu/.rvm/rubies/jruby-9.0.4.0/lib/ruby/stdlib/net/http.rb:882
         do_start at /home/ubuntu/.rvm/rubies/jruby-9.0.4.0/lib/ruby/stdlib/net/http.rb:867
            start at /home/ubuntu/.rvm/rubies/jruby-9.0.4.0/lib/ruby/stdlib/net/http.rb:856
            start at /home/ubuntu/.rvm/rubies/jruby-9.0.4.0/lib/ruby/stdlib/net/http.rb:583
             stop at /home/ubuntu/.rvm/gems/jruby-9.0.4.0/gems/selenium-webdriver-2.48.1/lib/selenium/webdriver/phantomjs/service.rb:75
             quit at /home/ubuntu/.rvm/gems/jruby-9.0.4.0/gems/selenium-webdriver-2.48.1/lib/selenium/webdriver/phantomjs/bridge.rb:73
             quit at /home/ubuntu/.rvm/gems/jruby-9.0.4.0/gems/selenium-webdriver-2.48.1/lib/selenium/webdriver/common/driver.rb:171
            close at /home/ubuntu/.rvm/gems/jruby-9.0.4.0/gems/watir-webdriver-0.9.1/lib/watir-webdriver/browser.rb:136

这是密码：

THREAD_COUNT.times.map {
  Thread.new(links) do |links|
    while link = mutex.synchronize { links.pop }
      counter = 0
      sleep(rand 1..50)
      browser = Watir::Browser.new :phantomjs, :args => %w(--ssl-protocol=tlsv1 --ignore-ssl-errors=yes)
      begin
       result = function(browser)
      rescue
       counter += 1
       retry if counter > 2
      end
      browser.close
    end
  end
}.each(&:join)

我在ubuntu和JRuby9.0.4.0上运行它，就像这里建议的那样，我添加了睡眠Opening several threads with watir-webdriver results in 'Connection refused' error，但是它不起作用。

Answer 1

正如您所看到的，我在while-循环中创建了新的浏览器实例。有时它无法及时关闭该浏览器或发生其他与pid相关的故障。最好是创建固定数量的浏览器(例如THREAD_COUNT时间)，并在可用时重用它。因此，在THREAD_COUNT.times.map之后创建浏览器将为每个线程提供一个浏览器实例。