node.c中的http.createserver vs net.createserver [英] http.createserver vs net.createserver in node.js

问题描述

我无法理解node.js中net.createserver和http.createserver之间的区别。

I am having trouble understanding the difference between net.createserver and http.createserver in node.js.

我已经阅读了位于这两个网址的两种方法的文档
https://nodejs.org/api/net.html#/net_net,https://nodejs.org/api/http .html＃/ http_class_http_server 。

I have read the documentation for both methods located at these two urls https://nodejs.org/api/net.html#/net_net,https://nodejs.org/api/http.html#/http_class_http_server.

我知道http.createserver创建了一个http服务器，但文档说net.createserver创建一个tcp服务器。我明白tcp是http在其上的传输协议，并且http服务器设置为读取http请求头。我也很了解node.js中偶数排放器的概念。然而，我不明白这个tcp服务器的概念，为什么会在node.js中创建。上下文是我在node.js in action一书中编写一个聊天应用程序示例。

I understand that http.createserver creates an http server, however the documentation says that net.createserver creates a tcp server. I understand that tcp is the transmission protocol that http is on top of and that http servers are set up to read http request headers. I also understand the concept of even emitters in node.js pretty well. However I dont understand this notion of a tcp server and why one would be made in node.js. The context is I am coding a chat application example in the "node.js in action" book.

感谢任何帮助

推荐答案

http.createServer（）设置一个处理HTTP协议的服务器，这通过tcp确实传输。 net.createServer（）创建一个服务器，只需了解TCP连接何时发生，数据已被传输，等等，但不知道是否已经收到有效的HTTP请求等。

http.createServer() sets up a server that handles the HTTP protocol, which is indeed transmitted over tcp. net.createServer() creates a server that simply understands when a TCP connection has happened, and data has been transmitted, and so on, but doesn't know anything about whether a valid HTTP request has been received, etc.

如果您正在编写一个Web服务器，则有利于 http.createServer（）超过 net.createServer（），因为它将为您节省大量工作。如果您正在编写其他类型的服务器，请不要使用 http.createServer（）。

If you are writing a web server, favor http.createServer() over net.createServer() as it will save you a lot of work. If you are writing some other kind of server, do not use http.createServer().

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