Question

我想在下面的代码中看到使用Benchmark访问网址所需的时间。我也试图在没有基准的情况下做同样的事情。也就是说，在测试开始和测试结束时获取时间，减去两个以获得时间。两种方法都以相同的超时错误结束。

require 'open-uri'
require 'benchmark'

response = nil
puts "opening website with benchmark..."
puts Benchmark.measure{
  response = open('http://mywebsite.com')
}

puts "Done !"
status = response.status
puts status

错误：

opening website with benchmark...
C:/ruby/lib/ruby/1.8/timeout.rb:64:in `rbuf_fill': execution expired (Timeout::Error)
    from C:/ruby/lib/ruby/1.8/net/protocol.rb:134:in `rbuf_fill'
    from C:/ruby/lib/ruby/1.8/net/protocol.rb:116:in `readuntil'
    from C:/ruby/lib/ruby/1.8/net/protocol.rb:126:in `readline'
    from C:/ruby/lib/ruby/1.8/net/http.rb:2028:in `read_status_line'
    from C:/ruby/lib/ruby/1.8/net/http.rb:2017:in `read_new'
    from C:/ruby/lib/ruby/1.8/net/http.rb:1051:in `request'
    from C:/ruby/lib/ruby/1.8/open-uri.rb:248:in `open_http'
    from C:/ruby/lib/ruby/1.8/net/http.rb:543:in `start'
    from C:/ruby/lib/ruby/1.8/open-uri.rb:242:in `open_http'
    from C:/ruby/lib/ruby/1.8/open-uri.rb:616:in `buffer_open'
    from C:/ruby/lib/ruby/1.8/open-uri.rb:164:in `open_loop'
    from C:/ruby/lib/ruby/1.8/open-uri.rb:162:in `catch'
    from C:/ruby/lib/ruby/1.8/open-uri.rb:162:in `open_loop'
    from C:/ruby/lib/ruby/1.8/open-uri.rb:132:in `open_uri'
    from C:/ruby/lib/ruby/1.8/open-uri.rb:518:in `open'
    from C:/ruby/lib/ruby/1.8/open-uri.rb:30:in `open'
    from C:/code/test.rb:7
    from C:/ruby/lib/ruby/1.8/benchmark.rb:293:in `measure'
    from C:/code/test.rb:6

当我尝试在浏览器中连接到此URL时，始终需要大约2-3分钟才能访问。

我搜索了谷歌，但发现我的问题没有有用的答案。我知道我必须这样做更改某些内容的超时设置，但无法确定哪一个。有人可以帮忙吗？

Answer 1

使用以秒为单位指定的:read_timeout选项，例如，

open('foo.com', :read_timeout => 10)

http://ruby-doc.org/stdlib-1.8.7/libdoc/open-uri/rdoc/OpenURI/OpenRead.html

Answer 2

BufferedIO Net::HTTP用于open-uri用于请求的连接的Net::HTTP类具有read_timeout attribute set to 60 seconds。

open-uri课程提供setter read_timeout for that。

不幸的是，60 sets up请求的方式无法为您提供在请求之前获取该设置的方法，或者轻松覆盖默认的Net::HTTP。

您可能需要自己使用link = URI.parse(url) request = Net::HTTP::Get.new(link.path) response = Net::HTTP.start(link.host, link.port) {|http| http.read_timeout = 100 #Default is 60 seconds http.request(request) }。

:read_timeout = x

代码从this answer

被盗

编辑：或升级到1.9，支持{{1}}选项Dave Newton指出。

连接到URL时防止超时

2 个答案: