RubyのMechanizeがSSLエラーになる。

とりあえず、以下を最初にやってからMechanize.newすると大丈夫っぽい*1

 require 'openssl'
OpenSSL::SSL::VERIFY_PEER = OpenSSL::SSL::VERIFY_NONE

エラーになったやつ。

sora_h のniconico モジュールを使ったらエラーだった

?> require 'niconico' #=> true
>> a=Niconico.new 'takuya***@gmail.com' , ‘****' #=> #<Niconico: takuy****@gmail.com (not logined)
?>
>> a.login
OpenSSL::SSL::SSLError: SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed
        from /Users/takuya/.rvm/gems/ruby-1.9.3-rc1/gems/net-http-persistent-2.3.3/lib/net/http/persistent/ssl_reuse.rb:70:in `connect'
        from /Users/takuya/.rvm/gems/ruby-1.9.3-rc1/gems/net-http-persistent-2.3.3/lib/net/http/persistent/ssl_reuse.rb:70:in `block in connect'
        from /Users/takuya/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/timeout.rb:54:in `timeout'
        from /Users/takuya/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/timeout.rb:99:in `timeout'
        from /Users/takuya/.rvm/gems/ruby-1.9.3-rc1/gems/net-http-persistent-2.3.3/lib/net/http/persistent/ssl_reuse.rb:70:in `connect'
        from /Users/takuya/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/net/http.rb:755:in `do_start'
        from /Users/takuya/.rvm/rubies/ruby-1.9.3-rc1/lib/ruby/1.9.1/net/http.rb:750:in `start'
        from /Users/takuya/.rvm/gems/ruby-1.9.3-rc1/gems/net-http-persistent-2.3.3/lib/net/http/persistent.rb:405:in `connection_for'
        from /Users/takuya/.rvm/gems/ruby-1.9.3-rc1/gems/net-http-persistent-2.3.3/lib/net/http/persistent.rb:616:in `request'
        from /Users/takuya/.rvm/gems/ruby-1.9.3-rc1/gems/mechanize-2.1/lib/mechanize/http/agent.rb:264:in `fetch'
        from /Users/takuya/.rvm/gems/ruby-1.9.3-rc1/gems/mechanize-2.1/lib/mechanize.rb:1036:in `post_form'
        from /Users/takuya/.rvm/gems/ruby-1.9.3-rc1/gems/mechanize-2.1/lib/mechanize.rb:380:in `post'
        from /Users/takuya/.rvm/gems/ruby-1.9.3-rc1/gems/niconico-1.1.3/lib/niconico.rb:30:in `login'
        from (irb):6
        from /Users/takuya/.rvm/gems/ruby-1.9.3-rc1/gems/irb_rocket-0.2.0/lib/irb_rocket.rb:65:in `block in signal_status'
        from /Users/takuya/.rvm/gems/ruby-1.9.3-rc1/gems/irb_rocket-0.2.0/lib/irb_rocket.rb:26:in `call'
        from /Users/takuya/.rvm/gems/ruby-1.9.3-rc1/gems/irb_rocket-0.2.0/lib/irb_rocket.rb:26:in `capture'
        from /Users/takuya/.rvm/gems/ruby-1.9.3-rc1/gems/irb_rocket-0.2.0/lib/irb_rocket.rb:64:in `signal_status'
        from /Users/takuya/.rvm/rubies/ruby-1.9.3-rc1/bin/irb:16:in `<main>'>>
?>

MechanizeはSSL関係で、証明書関連でエラーになる。ってことらしい。

対処法

・証明書を入れる
・証明書エラーは無視する。

自分で使うなら後者

require 'openssl'
OpenSSL::SSL::VERIFY_PEER = OpenSSL::SSL::VERIFY_NONE
require 'mechanize'

これで、とりあえず、しばらく使えるようになるみたいですね。

参考

http://stackoverflow.com/questions/4528101/ssl-connect-returned-1-errno-0-state-sslv3-read-server-certificate-b-certificat

*1:あくまでとりあえずですからね。