Firefox can't establish a connection to the server - Server Sent Events

[shashib]

Hi i am using HTML5 Server-Sent Events

 

Actually i need to show notification ( new record enter and which are unread ) thats when any new record is insert in database ( php / mysql )

 

So for testing purpose i just tried with count of total row.

 

but getting below error message in my localhost :

Firefox can't establish a connection to the server at http://localhost/project/folder/servevent/demo_sse.php.line is :

var source = new EventSource("demo_sse.php");

WHAT I HAVE TRIED :

 

index.php

<script>if(typeof(EventSource) !== "undefined") {var source = new EventSource("demo_sse.php");source.onmessage = function(event) {document.getElementById("result").innerHTML = event.data;};} else {document.getElementById("result").innerHTML = "Sorry, your browser does not support server-sent events...";}</script> <div id="result"></div> 

demo_sse.php

<?phpheader('Content-Type: text/event-stream');header('Cache-Control: no-cache');$db = mysql_connect("localhost", "root", ""); // your host, user, passwordif(!$db) { echo mysql_error(); }$select_db = mysql_select_db("testdatase"); // database nameif(!$select_db) { echo mysql_error(); }$time = " SELECT count( id ) AS ct FROM `product` ";$result = mysql_query($time);$resa = mysql_fetch_assoc($result);echo $resa['ct'];flush();?>

please let me know what going wrong.

 

I know for notification we can use Ajax with some interval time , but i don't want such thing. As i have N number of records and which may slow my resources.

 

[thescientist]

are checking for Apache error logs? can you hit the PHP file itself directly in the browser?

[shashib]

yes i can hit php file directly and getting result too .. but @ index.php the outcome is not seen ..also error is in firebug

Edited August 7, 2014 by shashib

[shashib]

any master here ?

[justsomeguy]

Like the example you linked to shows, maybe the problem is that your output does not start with "data:".

[shashib]

please can you brief with example

[justsomeguy]

There's an example on the page you linked to in the first post. Note that the response starts with "data:", and the note below tells you that every response should start with that.