Monitoring performance and availability are critical to operating successful content distribution networks. Internet measurements provide the data needed for traffic engineering, alerting, and network diagnostics. While there are significant benefits to performing end-user active measurements, these capabilities are limited to a small number of content providers with application control. In this work, we present a solution to the long-standing problem of issuing active measurements from clients without requiring application control, e.g., injecting JavaScript to the content served. Our approach uses server-side programmable features of the Network Error Logging specification that allow a CDN to induce a browser connection to an HTTPS server of the CDN's choosing without application control.

监控性能和可用性对于运营成功的内容分发网络至关重要。互联网测量提供流量工程、警报和网络诊断所需的数据。虽然执行最终用户主动测量具有显着优势，但这些功能仅限于少数具有应用程序控制的内容提供商。在这项工作中，我们提出了一个长期存在的问题的解决方案，即从客户端发布主动测量而不需要应用程序控制，例如，将 JavaScript 注入所服务的内容。我们的方法使用网络错误记录规范的服务器端可编程功能，允许 CDN 诱导浏览器连接到 CDN 选择的 HTTPS 服务器，而无需应用程序控制。