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Ipsee

Ipsee facilitates IPC (Inter Process Communication) in Node.js via UNIX sockets.

Getting Started

Install using NPM:

npm install ipsee --save

Give Ipsee a namespace for your application and subscribe:

var ipsee = require('ipsee');
var ipc   = ipsee('my_app_namespace').subscribe();

Now you can send and receive messages with your other processes and programs:

ipc.on('ping', function(data) {
  console.log('received ping from pid %d, sending pong...', data._fromUID);
  ipc.send('pong');
});

---

ipsee(namespace, [options])

Creates a new UNIX socket server and connects to other sockets in the given namespace.

Methods

i.subscribe([uid])

If a uid is supplied, then subscribe to the socket server referenced, otherwise subscribe to all in the namespace.

i.send(event, [data])

Broadcast an event to other connected sockets containing optional data.

i.close()

End connections with all sockets and unlink the underlying file descriptor.

Options

The ipsee() function's second argument is an optional options dictionary.

path

Directory path where UNIX socket file descriptor should be created. Default: /tmp.

debug

Print verbose debug messages to the console. Default: false.

uid

Unique identifier other ipsee instances use to refer to this one. Default: process.pid.

Events

Aside from your custom event listeners, there are a few built in events.

ready

Emitted when this socket server is listening on the newly minted file descriptor.

close

Emitted when this socket server has been closed and the underlying file descriptor unlinked.

error

Emitted when something unexpected happens. Failure to handle this event will result in a throw.