总是得到： SSL_connect returned=1 errno=0 state=error: 证书验证失败（无法获取本地颁发者证书）答案

【问题标题】：Always getting: SSL_connect returned=1 errno=0 state=error: certificate verify failed (unable to get local issuer certificate)总是得到： SSL_connect returned=1 errno=0 state=error: 证书验证失败（无法获取本地颁发者证书）
【发布时间】：2019-10-04 07:51:03
【问题描述】：

我使用 ruby-saml gem 并尝试加载 IDP 的元数据，但收到此错误：

> OneLogin::RubySaml::IdpMetadataParser.new.parse_remote('my IDP federation metadata XML URL')

Traceback (most recent call last):
       12: from /Users/my_name_here/.rvm/rubies/ruby-2.6.4/bin/irb:23:in `<main>'
       11: from /Users/my_name_here/.rvm/rubies/ruby-2.6.4/bin/irb:23:in `load'
       10: from /Users/my_name_here/.rvm/rubies/ruby-2.6.4/lib/ruby/gems/2.6.0/gems/irb-1.0.0/exe/irb:11:in `<top (required)>'
        9: from (irb):2
        8: from /Users/my_name_here/.rvm/gems/ruby-2.6.4/gems/ruby-saml-1.11.0/lib/onelogin/ruby-saml/idp_metadata_parser.rb:53:in `parse_remote'
        7: from /Users/my_name_here/.rvm/gems/ruby-2.6.4/gems/ruby-saml-1.11.0/lib/onelogin/ruby-saml/idp_metadata_parser.rb:178:in `get_idp_metadata'
        6: from /Users/my_name_here/.rvm/rubies/ruby-2.6.4/lib/ruby/2.6.0/net/http.rb:1470:in `request'
        5: from /Users/my_name_here/.rvm/rubies/ruby-2.6.4/lib/ruby/2.6.0/net/http.rb:919:in `start'
        4: from /Users/my_name_here/.rvm/rubies/ruby-2.6.4/lib/ruby/2.6.0/net/http.rb:930:in `do_start'
        3: from /Users/my_name_here/.rvm/rubies/ruby-2.6.4/lib/ruby/2.6.0/net/http.rb:996:in `connect'
        2: from /Users/my_name_here/.rvm/rubies/ruby-2.6.4/lib/ruby/2.6.0/net/protocol.rb:44:in `ssl_socket_connect'
        1: from /Users/my_name_here/.rvm/rubies/ruby-2.6.4/lib/ruby/2.6.0/net/protocol.rb:44:in `connect_nonblock'
OpenSSL::SSL::SSLError (SSL_connect returned=1 errno=0 state=error: certificate verify failed (unable to get local issuer certificate))

上面的错误是什么意思？

我试图查看我正在使用的证书，它似乎是这样的：

[13] pry(#<OpenSSL::SSL::SSLContext>)> OpenSSL::X509::DEFAULT_CERT_FILE
=> "/usr/local/etc/openssl@1.1/cert.pem"
[14] pry(#<OpenSSL::SSL::SSLContext>)> OpenSSL::X509::DEFAULT_CERT_DIR
=> "/usr/local/etc/openssl@1.1/certs"

我的证书有问题吗？

注意：我已阅读 SSL_connect returned=1 errno=0 state=error: certificate verify failed (unable to get local issuer certificate)，但仍然不知道如何解决我的问题。该人手动使用证书，但我认为我不需要使用证书，因为代码应该处理证书？

【问题讨论】：

标签： ruby openssl ssl-certificate saml-2.0 ruby-saml

【解决方案1】：

IDP 端证书过期，他们修复它并停止相关错误。

【讨论】：