protomsg

a little module to parse protocol messages over sockjs. just npm install protomsg.

examples

Server:

var protomsg = require('protomsg');

// given a sockjs Connection object
var conn;

var emitter = protomsg(conn);
emitter.on("message:test", function (data, seq) {
	// data = "hi", seq = 1
});

// given a sockjs client connects and sends
var fakeMessage = JSON.stringify({id: "test", data: "hi", seq: 1});

// see listener body comment

Client:

var protomsg = require('protomsg');

var conn = new SockJS("//some/sock/server");

var emitter = protomsg(conn);

emitter.on("message:test", function (data, seq) {
	// data = "hi", seq = 1
});

// given the server we connected to sends
var fakeMessage = JSON.stringify({id: "test", data: "hi", seq: 1});

api

(sockServerOrClient)

given a sockjs serverside Connection object, or a sockjs client side SockJS object, emit events if messages using the following structure are found:

{
	id: String,
	data: Object,
	seq: Number
}

where the event name will be message:<id> for any id. Also emit malformed if a message is received that doesn't follow that structure.

events

malformed

occurs when a message doesn't follow the structure. argment is the raw data of the message.

message:id

occurs when a message is parsed properly, according to the structure. argument is the parsed Object, then the seq.