How can I differentiate between UNIX socket connections in Node.js?

Question

When creating a simple server to listen on a UNIX domain socket…

var server = require("net").createServer();
server.listen("/tmp/whatever.sock"); // Listen at UNIX domain socket
server.on("connection", function(stream) {

    // What now?

});

…what uniquely identifies that stream when it hits the "connection"-callback?

When working with WebSockets, I'm used to creating a var clients = {} and storing streams in it by the IP-and-port the connection originated from.

What's the equivalent "IP-and-port" unique identifier for a UNIX-domain socket and how can I see it from Node?

score 0 · Accepted Answer · edited May 23 '17 at 10:10

0

File descriptors are the "IP+port-equivalent" UNIX socket connection identifiers.

A Node stream corresponding to a UNIX socket connection has stream._handle.fd containing that file descriptor.

edited May 23 '17 at 10:10

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answered Jan 26 '15 at 16:01

Anko - inactive in protest

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I'm aware that `_`-prefixed keys are often used in JavaScript to mean "private" fields. Does anyone know of a cleaner actually API-specified way to access the FD? – Anko - inactive in protest Feb 18 '15 at 13:52

How can I differentiate between UNIX socket connections in Node.js?

1 Answers1