使用rpush通过APNS发送推送（apple-app）
我收到如下错误。似乎错误是由于ruby更新的问题，（2.4.0）但是，我不确定为什么这个密码长度问题有
发生了以及如何处理这个问题。
OpenSSL::OpenSSLError, password must be at least 4 bytes
/home/deploy/project/shared/bundle/ruby/2.4.0/gems/rpush-3.0.2/lib/rpush/daemon/tcp_connection.rb:128:in `initialize'
/home/deploy/project/shared/bundle/ruby/2.4.0/gems/rpush-3.0.2/lib/rpush/daemon/tcp_connection.rb:128:in `new'
/home/deploy/project/shared/bundle/ruby/2.4.0/gems/rpush-3.0.2/lib/rpush/daemon/tcp_connection.rb:128:in `setup_ssl_context'
/home/deploy/project/shared/bundle/ruby/2.4.0/gems/rpush-3.0.2/lib/rpush/daemon/tcp_connection.rb:39:in `connect'
/home/deploy/project/shared/bundle/ruby/2.4.0/gems/rpush-3.0.2/lib/rpush/daemon/apns/feedback_receiver.rb:57:in `check_for_feedback'
当前版本的openssl如下所示
2.4.0 :001 > require 'openssl'
=> true
2.4.0 :002 > RUBY_VERSION
=> "2.4.0"
2.4.0 :003 > OpenSSL::OPENSSL_VERSION
=> "OpenSSL 1.0.2g 1 Mar 2016"
2.4.0 :004 > OpenSSL::VERSION
=> "2.0.2"
2.4.0 :005 >