Hi again Ernie,
There's no real reason why it shouldn't work in a browser except that I
haven't tried it in a while, it tends to be easier to try things out
using node.js and doing some more browser tests was on my TODO list :-)
The error "Uncaught TypeError: Cannot read property 'fa' of null" is
less than helpful :-) that's 'cause it has been minified with closure.
I doubt that you are doing anything especially wrong it'll just be
something stupid I've done.
If you look in the CMake and set closure 0 in this bit:
LINK_FLAGS "-s \"EXPORT_NAME='proton'\" -s
\"WEBSOCKET_SUBPROTOCOL='AMQPWSB10'\" -O2 --closure 1 --memory-init-file 0
and recompile you'll get a more useful error but TBH if you can bear
with me I'll try to take a look as it tomorrow, I can't do much this
evening 'cause I've been putting up a fence and I'm knackered :-)
I'll give you a ping when I've sorted it .....
Frase
On 30/08/14 16:25, Ernest Allen wrote:
Hi Fraser,
I'm trying to run the proton javascript bindings from within a browser. I'm
getting various errors depending on the way I'm doing it and I was hoping you
could shed some light on the correct approach.
I have node recv.js running in a separate window.
The first way I tried was just including proton.js directly. When I load the
page the console shows the following for the HTML listed below:
pre-main prep time: 6 ms
proton is [object Object]
before put
Uncaught TypeError: Cannot read property 'fa' of null
Uncaught TypeError: Cannot read property 'fa' of null
Here is the HTML:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";>
<html xmlns="http://www.w3.org/1999/xhtml";>
<head>
<title>An XHTML 1.0 Strict standard template</title>
<meta http-equiv="content-type"
content="text/html;charset=utf-8" />
<script type="text/javascript"
src="../../../node_modules/qpid-proton/lib/proton.js"></script>
<script type="text/javascript">
//<![CDATA[
console.log("proton is " + window.proton);
var address = "amqp://0.0.0.0";
var subject = "BrowserMessage";
var msgtext = "Hello From Browser!";
var tracker = null;
var running = true;
var message = new proton.Message();
var messenger = new proton.Messenger();
var pumpData = function() {
var status = messenger.status(tracker);
if (status != proton.Status.PENDING) {
if (running) {
messenger.stop();
running = false;
}
}
if (messenger.isStopped()) {
message.free();
messenger.free();
}
};
messenger.on('error', function(error) {console.log("this is the error" +
error);});
messenger.on('work', pumpData);
messenger.setOutgoingWindow(1024);
messenger.start();
message.setAddress(address);
message.setSubject(subject);
message.body = msgtext;
console.log("before put");
messenger.put(message);
//]]>
</script>
</head>
<body>
</body>
</html>
The output in the window running node recv.js is:
[0x535398]:ERROR[-2] AMQP header mismatch: '' (connection aborted)
CONNECTION ERROR connection aborted (remote)
When I browserify the proton.js into qpid-proton-browser.js and load that file
instead, I get the following when the page loads:
Uncaught TypeError: Cannot read property 'replace' of undefined
proton is undefined
Uncaught ReferenceError: proton is not defined
The Uncaught TypeError is due to a referece to "process.argv[1]". If I manually edit the
qpid-proton-browser.js file to define all the process properties that it wants, I still get the
"proton is undefined" error.
Do you know what I'm doing wrong?
Thanks,
-Ernie
