在Heroku上使用Postmark API的Rails电子邮件-由对等方重置连接

vbsql7 发表于 Dev

vbsql7

今天，我有很多挫伤，试图一次学习两件事...用于Postmark和Rails HTTP请求的API。

目标：使用Heroku的Postmark附件发送生产电子邮件。

我正在尝试将有关HTTP请求的这篇文章... http://docs.ruby-lang.org/en/2.0.0/Net/HTTP.html ...与该API标记邮戳... http： //developer.postmarkapp.com/developer-send-api.html

不幸的是，Postmark中的示例是在curl中完成的，而我没有成功将它们转换为HTTP请求。我怀疑问题出在排头附近-变速箱的除车身以外的部分。

在下面的代码中看到的抢救子句将捕获错误“对等方重置连接”。此时，我不知道我是否接近提供Postmark身份验证的标头的正确格式。

我有正确的服务器令牌（在config条目中），“发件人”电子邮件已获得必需的邮戳签名。

   def send_production_email(email_address, subject, email_body)

      # Use API to interact with Heroku add-on Postmark
      # http://developer.postmarkapp.com/developer-send-api.html

      uri = URI('https://api.postmarkapp.com/email')

      # Form the request
      req = Net::HTTP::Post.new(uri)

      # Set request headers -- SUSPECT THIS IS WRONG
      req['Accept'] = 'application/json'
      req['Content-Type'] = 'application/json'
      req['X-Postmark-Server-Token'] = Rails.application.config.postmark_token

      rbody ={
          'From' => 'Support <[email protected]>',
          'To' => email_address,
          'Subject' => subject,
          'HtmlBody' => wrap_html(email_body),
          'TextBody' => email_body
      }.to_json

      req.body = rbody

      # Send the request, waiting for the response

      begin
         response = Net::HTTP.new(uri.host, uri.port).start {|http| http.request(req) }
      rescue Exception => e
         logthis("http request error: #{e.message}")
         return
      end

      # ...parsing section omitted since I do not get that far...

   end

再次尝试以这种方式格式化，但会导致相同的对等方重置错误：

      rbody ={
          'From' => 'Support <[email protected]>', # TODO: replace email when domain is live
          'To' => email_address,
          'Subject' => subject,
          'HtmlBody' => wrap_html(email_body),
          'TextBody' => email_body
      }.to_json

      uri = URI('https://api.postmarkapp.com/email')

      http = Net::HTTP.new(uri.host, uri.port)
      # http.use_ssl = true

      request = Net::HTTP::Post.new(uri.path, {'Content-Type' => 'application/json', 'Accept' => 'application/json', 'X-Postmark-Server-Token' => Rails.application.config.postmark_token})
      request.body = rbody

      # Send the request, waiting for the response

      begin
         response = http.request(request)
      rescue Exception => e
         logthis("http request error: #{e.message}")
         return
      end

感谢您的指导！

temochka

我是Wildbit的雇员，也是Postmark Ruby官方gem的维护者。

“对等连接重置”错误是您尝试将未加密的HTTP请求发送到希望通过HTTPS进行安全通信的端点的结果。因此，如果更改此行：

Net::HTTP.new(uri.host, uri.port).start {|http| http.request(req) }

到：

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true
response = http.start { |http| http.request(req) }

那么您应该能够从API收到响应。我看到您在第二个示例中有此行，但已对此进行了注释。由于您是在练习，所以我想补充一点，在使用时，net/http您通常不必使用诸如之类的基础类Net::HTTP::Post。通常使用Net::HTTP类实例提供的更高级别的API更简单。这是使用方法可以简化您的方法的示例：

def send_production_email(email_address, subject, email_body)
  uri = URI('https://api.postmarkapp.com/email')
  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = true

  headers = {'Accept' => 'application/json',
             'Content-Type' => 'application/json',
             'X-Postmark-Server-Token' => Rails.application.config.postmark_token}
  payload = {'From' => '[email protected]',
             'To' => email_address,
             'Subject' => subject,
             'HtmlBody' => email_body,
             'TextBody' => email_body}

  http.post(uri.request_uri, payload.to_json, headers)
rescue => e
  puts "http request error: #{e.message}"
end