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To get the name or hostname of the OS, you can use the hostname() method from the os module in Node. js. /* Get hostname of os in Node. js */ // import os module const os = require("os"); // get host name const hostName = os.
We can use the req. hostname property to get the hostname from a current incoming request in express. Example: const express = require("express"); const app = express(); app.
Express has a built-in express. json() function that returns an Express middleware function that parses JSON HTTP request bodies into JavaScript objects. The json() middleware adds a body property to the Express request req . To access the parsed request body, use req.
You can use the os Module:
var os = require("os");
os.hostname();
See http://nodejs.org/docs/latest/api/os.html#os_os_hostname
Caveats:
if you can work with the IP address -- Machines may have several Network Cards and unless you specify it node will listen on all of them, so you don't know on which NIC the request came in, before it comes in.
Hostname is a DNS matter -- Don't forget that several DNS aliases can point to the same machine.
If you're talking about an HTTP request, you can find the request host in:
request.headers.host
But that relies on an incoming request.
More at http://nodejs.org/docs/v0.4.12/api/http.html#http.ServerRequest
If you're looking for machine/native information, try the process object.
Here's an alternate
req.hostname
Read about it in the Express Docs.
If you need a fully qualified domain name and have no HTTP request, on Linux, you could use:
var child_process = require("child_process");
child_process.exec("hostname -f", function(err, stdout, stderr) {
var hostname = stdout.trim();
});
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