telepathymq

telepathymq

a nodejs module for inter-process communication that let you share javascript object and events over network that support tcp and secure tls sockets.

Installation

telepathymq is available over npm

npm install telepathymq

Sample

this code initialise connection between client and server side and send an "hello world" message

var Telepathy = require('telepathymq');

// initialise the server side
// the constructor take a string argument for the instance identity
// used to send data from other node.
// it must be uniq on connected nodes.
var server = new Telepathy('server');
server.listen(8060, function() {
  console.log('server is listening on port 8060');
});
server.on('register', function(identity) {
  console.log(identity + ' has registered on server');
});
server.on('message', function(msg) {
  console.log('message: ' + msg);
});

// initialise the client side
var client = new Telepathy('client');
client.register('server', 'tcp://localhost:8060');
client.on('register', function(identity) {
  console.log(identity + ' has registered on client');
  // emit an event called 'message' on 'server' with a string 'hello world' as data
  client.emit('server', 'message', 'hello world');
});

Methods

server.listen()

Start a server listening for connections. Possible signatures:

• listen(port, [ip,] callback)
• listen(url, options, callback)

server.listen(port, [ip,] callback)

port: integer tcp port number ip: string ip address (optional, default: '0.0.0.0') callback: function

server.listen(connectString, [options,] callback)

connectString: string {tcp | tls}://{ip | hostname}:{port} options: object see node tls.createServer options only use in tls protocol callback: function

client.register(identity, connectString, [options,] callback)

immediately initiates connection. When the connection is established, a 'register' event will be emitted on the client.

identity: string identity of server node connectString: string {tcp | tls}://{ip | hostname}:{port} options: object see node tls.connect options only use in tls protocol callback: function

node.emit(identity, eventName, data)

emit an event on identity node.

identity: string identity of the other side node. eventName: string the name of the event being emited data: string,object data being sent over event

node.on(eventName, listener)

Adds the listener function to the end of the listeners array for the event named eventName.

eventName: string the name of the event. listener: function

node.defer(identity, eventName[, data])

return an asynk promise and send an asynk deferred.

identity: string identity of the other side node. eventName: string the name of the event being emited data: string,object data being sent over event

server.on('myDefer', function(defer, data) {
  if (data.val === 1) {
    defer.notify('some data');
  }
});

var promise = client.defer('server', 'myDefer', {val: 1});
promise.progress(function(data) {
  console.log(data);
});