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2025年12月18日 18:06 状态: processing

🚨 错误信息

<!DOCTYPE html>     <html class="no-js" lang="en-US">  <head> <title>www.dmxapi.cn | 520: Web server is returning an unknown error</title> <meta charset="UTF-8" /> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <meta http-equiv="X-UA-Compatible" content="IE=Edge" /> <meta name="robots" content="noindex, nofollow" /> <meta name="viewport" content="width=device-width,initial-scale=1" /> <link rel="stylesheet" id="cf_styles-css" href="/cdn-cgi/styles/main.css" /> </head> <body> <div id="cf-wrapper"> <div id="cf-error-details" class="p-0"> <header class="mx-auto pt-10 lg:pt-6 lg:px-8 w-240 lg:w-full mb-8"> <h1 class="inline-block sm:block sm:mb-2 font-light text-60 lg:text-4xl text-black-dark leading-tight mr-2"> <span class="inline-block">Web server is returning an unknown error</span> <span class="code-label">Error code 520</span> </h1> <div> Visit <a href="https://www.cloudflare.com/5xx-error-landing?utm_source=errorcode_520&utm_campaign=www.dmxapi.cn" target="_blank" rel="noopener noreferrer">cloudflare.com</a> for more information. </div> <div class="mt-3">2025-12-18 10:05:32 UTC</div> </header> <div class="my-8 bg-gradient-gray"> <div class="w-240 lg:w-full mx-auto"> <div class="clearfix md:px-8"> <div id="cf-browser-status" class=" relative w-1/3 md:w-full py-15 md:p-0 md:py-8 md:text-left md:border-solid md:border-0 md:border-b md:border-gray-400 overflow-hidden float-left md:float-none text-center"> <div class="relative mb-10 md:m-0"> <span class="cf-icon-browser block md:hidden h-20 bg-center bg-no-repeat"></span> <span class="cf-icon-ok w-12 h-12 absolute left-1/2 md:left-auto md:right-0 md:top-0 -ml-6 -bottom-4"></span> </div> <span class="md:block w-full truncate">You</span> <h3 class="md:inline-block mt-3 md:mt-0 text-2xl text-gray-600 font-light leading-1.3"> Browser </h3> <span class="leading-1.3 text-2xl text-green-success">Working</span> </div> <div id="cf-cloudflare-status" class=" relative w-1/3 md:w-full py-15 md:p-0 md:py-8 md:text-left md:border-solid md:border-0 md:border-b md:border-gray-400 overflow-hidden float-left md:float-none text-center"> <div class="relative mb-10 md:m-0"> <a href="https://www.cloudflare.com/5xx-error-landing?utm_source=errorcode_520&utm_campaign=www.dmxapi.cn" target="_blank" rel="noopener noreferrer"> <span class="cf-icon-cloud block md:hidden h-20 bg-center bg-no-repeat"></span> <span class="cf-icon-ok w-12 h-12 absolute left-1/2 md:left-auto md:right-0 md:top-0 -ml-6 -bottom-4"></span> </a> </div> <span class="md:block w-full truncate">Hong Kong</span> <h3 class="md:inline-block mt-3 md:mt-0 text-2xl text-gray-600 font-light leading-1.3"> <a href="https://www.cloudflare.com/5xx-error-landing?utm_source=errorcode_520&utm_campaign=www.dmxapi.cn" target="_blank" rel="noopener noreferrer"> Cloudflare </a> </h3> <span class="leading-1.3 text-2xl text-green-success">Working</span> </div> <div id="cf-host-status" class="cf-error-source relative w-1/3 md:w-full py-15 md:p-0 md:py-8 md:text-left md:border-solid md:border-0 md:border-b md:border-gray-400 overflow-hidden float-left md:float-none text-center"> <div class="relative mb-10 md:m-0"> <span class="cf-icon-server block md:hidden h-20 bg-center bg-no-repeat"></span> <span class="cf-icon-error w-12 h-12 absolute left-1/2 md:left-auto md:right-0 md:top-0 -ml-6 -bottom-4"></span> </div> <span class="md:block w-full truncate">www.dmxapi.cn</span> <h3 class="md:inline-block mt-3 md:mt-0 text-2xl text-gray-600 font-light leading-1.3"> Host </h3> <span class="leading-1.3 text-2xl text-red-error">Error</span> </div> </div> </div> </div> <div class="w-240 lg:w-full mx-auto mb-8 lg:px-8"> <div class="clearfix"> <div class="w-1/2 md:w-full float-left pr-6 md:pb-10 md:pr-0 leading-relaxed"> <h2 class="text-3xl font-normal leading-1.3 mb-4">What happened?</h2> <p>There is an unknown connection issue between Cloudflare and the origin web server. As a result, the web page can not be displayed.</p> </div> <div class="w-1/2 md:w-full float-left leading-relaxed"> <h2 class="text-3xl font-normal leading-1.3 mb-4">What can I do?</h2> <h3 class="text-15 font-semibold mb-2">If you are a visitor of this website:</h3> <p class="mb-6">Please try again in a few minutes.</p> <h3 class="text-15 font-semibold mb-2">If you are the owner of this website:</h3> <p><span>There is an issue between Cloudflare's cache and your origin web server. Cloudflare monitors for these errors and automatically investigates the cause. To help support the investigation, you can pull the corresponding error log from your web server and submit it our support team. Please include the Ray ID (which is at the bottom of this error page).</span> <a rel="noopener noreferrer" href="https://developers.cloudflare.com/support/troubleshooting/http-status-codes/cloudflare-5xx-errors/error-520/">Additional troubleshooting resources</a>.</p> </div> </div> </div> <div class="cf-error-footer cf-wrapper w-240 lg:w-full py-10 sm:py-4 sm:px-8 mx-auto text-center sm:text-left border-solid border-0 border-t border-gray-300"> <p class="text-13"> <span class="cf-footer-item sm:block sm:mb-1">Cloudflare Ray ID: <strong class="font-semibold">9afdd6a82415f51a</strong></span> <span class="cf-footer-separator sm:hidden">•</span> <span id="cf-footer-item-ip" class="cf-footer-item hidden sm:block sm:mb-1"> Your IP: <button type="button" id="cf-footer-ip-reveal" class="cf-footer-ip-reveal-btn">Click to reveal</button> <span class="hidden" id="cf-footer-ip">2a06:98c0:3600::103</span> <span class="cf-footer-separator sm:hidden">•</span> </span> <span class="cf-footer-item sm:block sm:mb-1"><span>Performance & security by</span> <a rel="noopener noreferrer" href="https://www.cloudflare.com/5xx-error-landing?utm_source=errorcode_520&utm_campaign=www.dmxapi.cn" id="brand_link" target="_blank">Cloudflare</a></span> </p> <script>(function(){function d(){var b=a.getElementById("cf-footer-item-ip"),c=a.getElementById("cf-footer-ip-reveal");b&&"classList"in b&&(b.classList.remove("hidden"),c.addEventListener("click",function(){c.classList.add("hidden");a.getElementById("cf-footer-ip").classList.remove("hidden")}))}var a=document;document.addEventListener&&a.addEventListener("DOMContentLoaded",d)})();</script> </div> </div> </div> </body> </html>

🤖 AI解决方案

错误翻译

原文：Web server is returning an unknown error
译文：Web服务器返回了一个未知错误

原因分析
这是一个HTTP 520错误，属于Cloudflare特有的状态码。根本原因是源站服务器（www.dmxapi.cn）返回了一个无效、空或无法被Cloudflare代理识别的响应。

具体来说，当Cloudflare作为反向代理向您的源站服务器发起请求时，您的服务器返回了一个格式错误、完全为空、或包含Cloudflare无法解析的头信息或内容的响应。这与您的源站服务器的配置、运行状态或代码逻辑直接相关。

解决方案

这不是客户端代码错误，而是服务器端问题。需要检查并修复您的源站服务器（www.dmxapi.cn）。

检查服务器状态与日志：

Web服务器进程

systemctl status nginx

应用进程

错误日志

/var/log/nginx/error.log

    # 示例：查看Nginx最近错误
    tail -f /var/log/nginx/error.log
    # 重启Nginx（如果已停止）
    sudo systemctl restart nginx

检查防火墙与安全组：

Cloudflare IP段

检查应用代码：

临时验证：

️ 预防措施

完善错误处理：在您的应用代码中，确保所有可能的异常都被捕获，并始终返回格式正确的HTTP响应（即使是一个500错误页面），而不是让进程崩溃或返回空内容。

实施健康检查与监控：为您的Web服务器和应用进程设置健康检查。使用 systemd、supervisor 或 pm2 等工具来监控进程，一旦崩溃立即自动重启。同时，设置服务器资源（CPU、内存、磁盘）的监控告警。

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