通过代理运行 Web 请求时如何设置 use_ssl 参数？

Question

我使用的是 Rails 4.2.7。通过代理发送网络请求时如何设置“use_ssl”参数？我有这个

    res1 = Net::HTTP.SOCKSProxy(TCPSocket::socks_server, TCPSocket::socks_port).start(uri.host, uri.port) do |http|
      http.use_ssl = (uri.scheme == "https")
      resp = http.get(uri, initheader = headers)
      status = resp.code.to_i
      if status == 302 || status == 301
        redirect = resp['location']
      end
      content = resp.body
      content_type = resp['content-type']
      content_encoding = resp['content-encoding']
    end

但是当我到达这一行时 - “http.use_ssl = (uri.scheme == "https”)” 我得到了异常

IOError: use_ssl value changed, but session already started
    from /Users/davea/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/net/http.rb:758:in `use_ssl='
    from /Users/davea/Documents/workspace/myproject/app/helpers/webpage_helper.rb:96:in `block in get_content'
    from /Users/davea/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/net/http.rb:853:in `start'
    from /Users/davea/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/net/http.rb:584:in `start'
    from /Users/davea/Documents/workspace/myproject/app/helpers/webpage_helper.rb:94:in `get_content'
    from /Users/davea/Documents/workspace/myproject/app/helpers/webpage_helper.rb:33:in `get_url'
    from (irb):1
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/railties-4.2.7.1/lib/rails/commands/console.rb:110:in `start'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/railties-4.2.7.1/lib/rails/commands/console.rb:9:in `start'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/railties-4.2.7.1/lib/rails/commands/commands_tasks.rb:68:in `console'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/railties-4.2.7.1/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
    from /Users/davea/.rvm/gems/ruby-2.3.0/gems/railties-4.2.7.1/lib/rails/commands.rb:17:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'

Answer 1

您是否尝试过在开始之前使用 use_ssl，如下所示

res1 = Net::HTTP.SOCKSProxy(TCPSocket::socks_server, TCPSocket::socks_port)
res1.use_ssl = (uri.scheme == "https")
res1.start(uri.host, uri.port) do |http|
  resp = http.get(uri, initheader = headers)
  status = resp.code.to_i
  if status == 302 || status == 301
    redirect = resp['location']
  end
  content = resp.body
  content_type = resp['content-type']
  content_encoding = resp['content-encoding']
end

Answer 2

根据这个测试样本，第 109 行： https://github.com/astro/socksify-ruby/blob/master/test/tc_socksify.rb#L109

我会尝试这样的：

res1 = Net::HTTP.SOCKSProxy(TCPSocket::socks_server, TCPSocket::socks_port).start(
  uri.host, uri.port, :use_ssl => (uri.scheme == "https")) do |http|

  resp = http.get(uri, initheader = headers)
  status = resp.code.to_i
  if status == 302 || status == 301
    redirect = resp['location']
  end
  content = resp.body
  content_type = resp['content-type']
  content_encoding = resp['content-encoding']
end

如果您没有有效的 SSL 证书，您可以像这样禁用 SSL 验证（不推荐用于生产！）

https://github.com/astro/socksify-ruby/blob/master/test/tc_socksify.rb#L110