In this shot, we will learn how to use the http.maHeaderSize
property. Headers are important in request and response and contain additional details about the request and response data. A header is an object with a name
and value
assigned to it.
The http.maxHeaderSize
property returns the maximum size of a header that HTTP supports. The different versions of Node have different sizes; for example, Node version >14 has a max size of 16kb, whereas Node version <14 has a max size of 8kb.
Let’s try to find out the maximum size of header HTTP supports.
const http = require("http");let size = http.maxHeaderSize;console.log('Max HTTP Header size is', size);
In line 1, we import the built-in http
module of Node and create a variable.
In line 3, we create a variable and store the value returned from the http.maxHeaderSize
property.
In line 4, we use console.log()
to print the value on the screen.
The console prints the value 8192
, which is around 8kb. Since the version of Node in the window is less than 14, we have a max size of 8kb. If you execute this code in the latest version of Node or any version greater than 14, you will get a value of 16kb.
Node provides us with different ways to change the header size. When you run node server.js
, just add the line --max-http-header-size=1024
before server.js
and you can change the value 1024
.
Below is the syntax to run the command.
node --max-http-header-size=1024 server.js
Try this in your personal machine and see if it works.