在 ruby​​ 1.9 中使用 mechanize（甚至 Net::HTTP）会返回“OpenSSL::SSL::SSLError” - 如何强制使用 SSLv3？

Question

在过去的两天里，我想我已经浏览了所有关于与 Net::HTTP 有关的 SSL 错误的可用（可通过 Google 搜索）的帖子： OpenSSL::SSL::SSLError: SSL_connect SYSCALL returned=5 errno=0 state=SSLv2/v3 read server hello A

我首先尝试做的是连接到 EtherPad< /code> 服务器 (https://test.titanpad.com)，登录并使用 ruby​​gems & 下载 zip 存档机械化;然而，不幸的是，由于所述 SSL-Error，我什至没有达到这一点。在尝试从 mechanize 对象内调试问题（通过在脚本中手动设置 cert、ca_file、cert_store、verify_mode 等）后，我更接近实际问题，尝试只需使用 Net::HTTP 连接到 https://test.titanpad.com :(

在这个例子中，我首先连接到 https://encrypted.google.com 以确保 SSL < em>应该可以解决；连接到 EtherPad 服务器的尝试从第 6 行开始）

irb(main):001:0> require 'net/https'
=> true
irb(main):002:0> google = Net::HTTP.new('encrypted.google.com', 443)
=> #<Net::HTTP encrypted.google.com:443 open=false>
irb(main):003:0> google.use_ssl = true
=> true
irb(main):004:0> google.ca_file = '/opt/local/share/curl/curl-ca-bundle.crt' if File.exists?('/opt/local/share/curl/curl-ca-bundle.crt')
=> "/opt/local/share/curl/curl-ca-bundle.crt"
irb(main):005:0> google.request_get('/')
=> #<Net::HTTPOK 200 OK readbody=true>

irb(main):006:0> etherpad = Net::HTTP.new('test.titanpad.com', 443)
=> #<Net::HTTP test.titanpad.com:443 open=false>
irb(main):007:0> etherpad.use_ssl = true
=> true
irb(main):008:0> etherpad.ca_file = '/opt/local/share/curl/curl-ca-bundle.crt' if File.exists?('/opt/local/share/curl/curl-ca-bundle.crt')
=> "/opt/local/share/curl/curl-ca-bundle.crt"
irb(main):009:0> etherpad.request_get('/')
OpenSSL::SSL::SSLError: SSL_connect SYSCALL returned=5 errno=0 state=SSLv2/v3 read server hello A
    from /opt/local/lib/ruby1.9/1.9.1/net/http.rb:799:in `connect'
    from /opt/local/lib/ruby1.9/1.9.1/net/http.rb:799:in `block in connect'
    from /opt/local/lib/ruby1.9/1.9.1/timeout.rb:54:in `timeout'
    from /opt/local/lib/ruby1.9/1.9.1/timeout.rb:99:in `timeout'
    from /opt/local/lib/ruby1.9/1.9.1/net/http.rb:799:in `connect'
    from /opt/local/lib/ruby1.9/1.9.1/net/http.rb:755:in `do_start'
    from /opt/local/lib/ruby1.9/1.9.1/net/http.rb:744:in `start'
    from /opt/local/lib/ruby1.9/1.9.1/net/http.rb:1284:in `request'
    from /opt/local/lib/ruby1.9/1.9.1/net/http.rb:1195:in `request_get'
    from (irb):9
    from /opt/local/bin/irb:12:in `<main>'

即使使用 verify_mode OpenSSL::SSL::VERIFY_NONE，OpenSSL 也会退出：

irb(main):010:0> etherpad.verify_mode = OpenSSL::SSL::VERIFY_NONE
=> 0
irb(main):011:0> etherpad.request_get('/')
OpenSSL::SSL::SSLError: SSL_connect SYSCALL returned=5 errno=0 state=SSLv2/v3 read server hello A
    from /opt/local/lib/ruby1.9/1.9.1/net/http.rb:799:in `connect'
    from /opt/local/lib/ruby1.9/1.9.1/net/http.rb:799:in `block in connect'
    from /opt/local/lib/ruby1.9/1.9.1/timeout.rb:54:in `timeout'
    from /opt/local/lib/ruby1.9/1.9.1/timeout.rb:99:in `timeout'
    from /opt/local/lib/ruby1.9/1.9.1/net/http.rb:799:in `connect'
    from /opt/local/lib/ruby1.9/1.9.1/net/http.rb:755:in `do_start'
    from /opt/local/lib/ruby1.9/1.9.1/net/http.rb:744:in `start'
    from /opt/local/lib/ruby1.9/1.9.1/net/http.rb:1284:in `request'
    from /opt/local/lib/ruby1.9/1.9.1/net/http.rb:1195:in `request_get'
    from (irb):11
    from /opt/local/bin/irb:12:in `<main>'

进一步尝试后有了 openssl 本身，它就变成了在这种情况下，真正的麻烦在于，必须强制使用 SSLv3 才能与 titanpad.com 后面的 Jetty 6.1.20 服务器 进行握手：

irb(main):001:0> require 'net/https'
=> true
irb(main):002:0> etherpad = Net::HTTP.new('test.titanpad.com', 443)
=> #<Net::HTTP test.titanpad.com:443 open=false>
irb(main):003:0> etherpad.use_ssl = true
=> true
irb(main):004:0> etherpad.ssl_version = "SSLv3"
=> "SSLv3"
irb(main):005:0> etherpad.ca_file = '/opt/local/share/curl/curl-ca-bundle.crt' if File.exists?('/opt/local/share/curl/curl-ca-bundle.crt')
=> "/opt/local/share/curl/curl-ca-bundle.crt"
irb(main):006:0> etherpad.request_get('/')
=> #<Net::HTTPFound 302 Found readbody=true>

现在，虽然这在使用 Net::HTTP，没有这样的选项可以设置要在Mechanize中使用的SSL版本...因此我真的很高兴如果有人可以向我指出我如何可以通过所说的 gem oO 强制实施 SSLv3

再次感谢！

系统：Mac OSX 10.6.8 ruby 1.9.3p0（2011-10-30 修订版 33570）[x86_64-darwin10] rubygems 与 mechanize 一起安装：domain_name (0.5.2)、mechanize (2.1.1)、net-http-digest_auth (1.2)、net-http-persistent (2.4.1)、nokogiri (1.5.0)、ntlm-http ( 0.1.1)、unf (0.0.4)、unf_ext (0.0.4)、网络机器人(0.0.13)

Answer 1

已通过将 ssl_version 功能从 Net::HTTP（通过 net-http-persistent）移植到 Mechanize v. 2.1.2 来修复（请参阅 https://github.com/tenderlove/mechanize/commit/4a228899855e0676ab69c2bf548170c8717465d8）。