我遇到了某种涉及Devise的回归错误，以及它在注册过程中向用户发送电子邮件的能力。我是Rails的新手，一旦我开始运行Devise，我就停止了对注册部分的试验。我最近升级了我的ruby版本，擦除了我的开发数据库，当我尝试重新创建一些用户时，我收到了这个错误：
Started POST "/users" for ::1 at 2016-10-02 09:32:34 -0400
Processing by DeviseInvitable::RegistrationsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"SFT9EQX83Aqg5jcdox1mLzlEGGRxUnvSngLgc08Hgysctg0BOI7Yrxv9UbWIjuS80Bf+hYHj0VA6B0LOMxTnLw==", "user"=>{"email"=>"user.name+test1@gmail.com", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"}, "commit"=>"Sign up"}
User Load (154.7ms) SELECT `users`.* FROM `users` WHERE `users`.`email` = 'user.name+test1@gmail.com' ORDER BY `users`.`id` ASC LIMIT 1
(0.2ms) BEGIN
User Exists (3.3ms) SELECT 1 AS one FROM `users` WHERE `users`.`email` = BINARY 'user.name+test1@gmail.com' LIMIT 1
SQL (25.0ms) INSERT INTO `users` (`email`, `encrypted_password`, `created_at`, `updated_at`, `confirmation_token`, `confirmation_sent_at`) VALUES ('user.name+test1@gmail.com', '$2a$10$20khSPmwRsCjxkiyjhiRE.BrYzV7Zu.6OY8rJnyLFB3Ju73PdLSLq', '2016-10-02 13:32:34', '2016-10-02 13:32:34', 'X2SBSZKmqTiV_As--ibW', '2016-10-02 13:32:34')
(1.3ms) COMMIT
Rendered devise/mailer/confirmation_instructions.html.erb (1.0ms)
Devise::Mailer#confirmation_instructions: processed outbound mail in 173.1ms
Sent mail to user.name+test1@gmail.com (596.2ms)
Date: Sun, 02 Oct 2016 09:32:34 -0400
From: user.name@gmail.com
Reply-To: user.name@gmail.com
To: user.name+test1@gmail.com
Message-ID: <57f10c72dbcb5_c783ffd99fa77c0174cb@uname.ad.mdp.com.mail>
Subject: Confirmation instructions
Mime-Version: 1.0
Content-Type: text/html;
charset=UTF-8
Content-Transfer-Encoding: 7bit
<p>Welcome user.name+test1@gmail.com!</p>
<p>You can confirm your account email through the link below:</p>
<p><a href="http://localhost:3000/users/confirmation?confirmation_token=X2SBSZKmqTiV_As--ibW">Confirm my account</a></p>
Completed 500 Internal Server Error in 1063ms (ActiveRecord: 184.5ms)
EOFError - end of file reached:
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/Users/uname/.rvm/rubies/ruby-2.2.5/lib/ruby/2.2.0/net/protocol.rb:134:in `readuntil'
/Users/uname/.rvm/rubies/ruby-2.2.5/lib/ruby/2.2.0/net/protocol.rb:144:in `readline'
/Users/uname/.rvm/rubies/ruby-2.2.5/lib/ruby/2.2.0/net/smtp.rb:945:in `recv_response'
/Users/uname/.rvm/rubies/ruby-2.2.5/lib/ruby/2.2.0/net/smtp.rb:931:in `block in getok'
/Users/uname/.rvm/rubies/ruby-2.2.5/lib/ruby/2.2.0/net/smtp.rb:955:in `critical'
/Users/uname/.rvm/rubies/ruby-2.2.5/lib/ruby/2.2.0/net/smtp.rb:929:in `getok'
/Users/uname/.rvm/rubies/ruby-2.2.5/lib/ruby/2.2.0/net/smtp.rb:830:in `helo'
/Users/uname/.rvm/rubies/ruby-2.2.5/lib/ruby/2.2.0/net/smtp.rb:604:in `do_helo'
/Users/uname/.rvm/rubies/ruby-2.2.5/lib/ruby/2.2.0/net/smtp.rb:556:in `do_start'
/Users/uname/.rvm/rubies/ruby-2.2.5/lib/ruby/2.2.0/net/smtp.rb:520:in `start'
mail (2.6.4) lib/mail/network/delivery_methods/smtp.rb:113:in `deliver!'
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mail (2.6.4) lib/mail/message.rb:237:in `block in deliver'
actionmailer (4.2.3) lib/action_mailer/base.rb:543:in `block in deliver_mail'
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activesupport (4.2.3) lib/active_support/notifications.rb:164:in `instrument'
actionmailer (4.2.3) lib/action_mailer/base.rb:541:in `deliver_mail'
mail (2.6.4) lib/mail/message.rb:237:in `deliver'
actionmailer (4.2.3) lib/action_mailer/message_delivery.rb:85:in `deliver_now'
devise (4.2.0) lib/devise/models/authenticatable.rb:191:in `send_devise_notification'
devise (4.2.0) lib/devise/models/confirmable.rb:117:in `send_confirmation_instructions'
devise (4.2.0) lib/devise/models/confirmable.rb:179:in `send_on_create_confirmation_instructions'
activesupport (4.2.3) lib/active_support/callbacks.rb:430:in `block in make_lambda'
activesupport (4.2.3) lib/active_support/callbacks.rb:251:in `block in conditional'
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activerecord (4.2.3) lib/active_record/transactions.rb:314:in `committed!'
activerecord (4.2.3) lib/active_record/connection_adapters/abstract/transaction.rb:89:in `commit_records'
activerecord (4.2.3) lib/active_record/connection_adapters/abstract/transaction.rb:153:in `commit'
activerecord (4.2.3) lib/active_record/connection_adapters/abstract/transaction.rb:175:in `commit_transaction'
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actionpack (4.2.3) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
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actionpack (4.2.3) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
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我正在使用gmail作为dev＆amp; amp;的smtp服务器测试环境。这工作正常 - 我能够在＆＃39; user.name+test1@gmail.com'收到电子邮件; （早先在那个电子邮件地址的真实版本中）。
我无法从错误信息中准确理解问题所在。看起来Devise能够创建确认电子邮件：
Rendered devise/mailer/confirmation_instructions.html.erb (1.0ms)
然后似乎说电子邮件已发送
Devise::Mailer#confirmation_instructions: processed outbound mail in 173.1ms
Sent mail to user.name+test1@gmail.com (596.2ms)
但有些事情正在报告EOF错误。据推测，这是ruby的网络适配器抱怨它预计会发送更多文件（电子邮件数据？），但过早地用完了：
Completed 500 Internal Server Error in 1063ms (ActiveRecord: 184.5ms)
EOFError - end of file reached:
/Users/uname/.rvm/rubies/ruby-2.2.5/lib/ruby/2.2.0/net/protocol.rb:153:in `rbuf_fill'
/Users/uname/.rvm/rubies/ruby-2.2.5/lib/ruby/2.2.0/net/protocol.rb:134:in `readuntil'
但这是我不会想到的事情之一自从Devise工作以来我改变了任何Devise配置或观点，所以我感到惊讶如果答案涉及改变现有的配置。
以前有没有经历过这样的事情？这篇文章似乎非常相似（Ruby mailer is coming up with an EOFError），但没有得到任何答复。
ALSO ：我刚刚看到用户表中添加了一条记录，用于user.name+test1@gmail.com。那里有一个用于确认令牌的字段，当我从db中点击http://localhost:3000/users/confirmation?confirmation_token=[token时，用户已被确认，我可以使用它们登录。因此，此错误必须本地化为发送确认电子邮件（再次，从未到达我的收件箱）。
修改：这是我的邮件程序配置：
应用程序/配置/环境/ development.rb
Rails.application.configure do
# Settings specified here will take precedence over those in config/application.rb.
# In the development environment your application's code is reloaded on
# every request. This slows down response time but is perfect for development
# since you don't have to restart the web server when you make code changes.
config.cache_classes = false
# Do not eager load code on boot.
config.eager_load = false
# Show full error reports and disable caching.
config.consider_all_requests_local = true
config.action_controller.perform_caching = false
# Don't care if the mailer can't send.
config.action_mailer.raise_delivery_errors = false
# Print deprecation notices to the Rails logger.
config.active_support.deprecation = :log
# Raise an error on page load if there are pending migrations.
config.active_record.migration_error = :page_load
# Debug mode disables concatenation and preprocessing of assets.
# This option may cause significant delays in view rendering with a large
# number of complex assets.
config.assets.debug = true
config.action_mailer.smtp_settings = {
address: "smtp.gmail.com",
port: 587,
domain: Rails.application.secrets.email_provider_smtp_domain,
authentication: "plain",
enable_starttls_auto: true,
user_name: Rails.application.secrets.email_provider_username,
password: Rails.application.secrets.email_provider_password
}
# ActionMailer Config
config.action_mailer.default_url_options = { :host => 'localhost:3000' }
config.action_mailer.delivery_method = :smtp
config.action_mailer.raise_delivery_errors = true
# Send email in development mode?
config.action_mailer.perform_deliveries = true
config.action_mailer.default :charset => "utf-8"
# Asset digests allow you to set far-future HTTP expiration dates on all assets,
# yet still be able to expire them through the digest params.
config.assets.digest = true
# Adds additional error checking when serving assets at runtime.
# Checks for improperly declared sprockets dependencies.
# Raises helpful error messages.
config.assets.raise_runtime_errors = true
# Raises error for missing translations
# config.action_view.raise_on_missing_translations = true
end