Rails Worker中ZeroMQ订阅者无法接收消息排查求助

我尝试从Quake Live服务器订阅ZeroMQ消息，已在QLStats上完成服务器注册（状态为绿色）。但本地基于Rails 7.2.2.1搭建的新项目中，使用ffi-rzmq 2.0.7的Worker始终无法接收消息。

Rails Worker代码 #

require 'ffi-rzmq'
require 'json'

class ZmqSubscriberJob
  include Sidekiq::Job

  def perform
    context = ZMQ::Context.new
    subscriber = context.socket(ZMQ::SUB)

    username = ENV['ZMQ_USERNAME']&.b
    password = ENV['ZMQ_PASSWORD']&.b
    subscriber.setsockopt(ZMQ::PLAIN_USERNAME, username)
    subscriber.setsockopt(ZMQ::PLAIN_PASSWORD, password)

    zmq_url = "tcp://#{ENV['ZMQ_HOST']}:#{ENV['ZMQ_PORT']}"
    subscriber.connect(zmq_url)
    subscriber.setsockopt(ZMQ::SUBSCRIBE, '')

    Rails.logger.info "Connected to ZeroMQ PUB socket at: #{zmq_url}, listening for all events."

    loop do
      message = ''
      subscriber.recv_string(message)
      Rails.logger.info "Received message: #{message}"
    rescue => e
      Rails.logger.error "Error: #{e.message}"
    end
  ensure
    subscriber&.close
    context&.terminate
  end
end

已完成的排查信息 #

• Quake Live服务器日志确认PUB套接字正常运行：

  zmq PUB socket: tcp://0.0.0.0:27960
  

• QLStats服务器显示认证通过：

  I: 25-01-02 10:39:09 zauth: ZAP request mechanism=PLAIN ipaddress=23.88.103.193
  I: 25-01-02 10:39:09 zauth: - allowed (PLAIN) username=XXX password=XXX
  I: 25-01-02 10:39:09 zauth: - ZAP reply status_code=200 status_text=OK
  

• 环境变量ZMQ_USERNAME和ZMQ_PASSWORD与服务器配置及日志中的凭证完全一致
• Rails Worker未记录任何错误日志

请问是否是ffi-rzmq版本导致的问题？

内容的提问来源于stack exchange，提问作者sckdd