在 JavaScript/Node.js 中每隔一段时间发送内容 [英] Send content at intervals in JavaScript/Node.js

问题描述

我想按时间间隔执行特定的代码行.该行将是 res.write("")，以保持连接处于活动状态.

I want to execute a particular line of code at timed intervals. The line will be res.write(""), to keep a connection alive.

这类似于嵌入式系统中的硬件中断.

This is similar to hardware interrupts in embedded systems.

是否可能有一个函数在内部运行我的代码，但在 20 秒内执行一行特定的代码?

Is it possible to have a function that inside will run my code, but at 20 seconds period to execute one particular line of code?

推荐答案

不需要的代码 res.write("") 会向线路发送一些东西，因为有效载荷是空的.您可能需要的是TCP keepalive 功能.>

The code res.write("") not necessary will send something to the wire, since the payload is empty. What you might need is TCP keepalive functionality.

 res.connection.setKeepAlive(true, 20000)

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