Firebase Server Sent Events - How to build a Java / JavaScript client

Question

I am new to Firebase and building a prototype to test if suitable for our needs. I\'ve got a chat example up and running, so far so good.

Next is the need to listen for

Answer 1

In order to receive events, you need to listen into 'Firebase' provided events which are put, patch, keep-alive etc... I have tried and it works.

You can refer following code snippet,

   if (typeof (EventSource) !== "undefined") {
            var source = new EventSource("https://xxxxxxxxx.firebaseio.com/TestNode.json");
            source.onmessage = function (event) {
                document.getElementById("result").innerHTML += event.data + "<br>";
            };

            source.addEventListener("message", function (e) {
                console.log(e.data);
            }, false);

            source.addEventListener("open", function (e) {
                console.log("Connection was opened.");
            }, false);

            source.addEventListener("error", function (e) {
                console.log("Error - connection was lost.");
            }, false);

            //magic goes here!
            source.addEventListener("patch", function (e) {
                console.log("Patch UP - " + e.data);
            }, false);
            //And here!
            source.addEventListener("put", function (e) {
                console.log("Put UP - " + e.data);
            }, false);


        } else {
            document.getElementById("result").innerHTML = "Sorry, your browser does not support server-sent events...";
        }

Refer following documents, https://firebase.google.com/docs/database/rest/retrieve-data

https://firebase.google.com/docs/reference/rest/database/