Get hostname of current request in node.js Express
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.
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 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();
});