Can't find Graphite metrics using Cubism.js - graphite

Question

The following command returns the metrics as expected:
curl "http://graphite.metrics:8080/metrics/find?format=completer&query=server*.cache"
{"metrics": [
{"is_leaf": "1", "path": "server1200.cache", "name": "cache"},
{"is_leaf": "1", "path": "server1201.cache", "name": "cache"},
{"is_leaf": "1", "path": "server1202.cache", "name": "cache"},
{"is_leaf": "1", "path": "server1203.cache", "name": "cache"},
{"is_leaf": "1", "path": "server1205.cache", "name": "cache"}
]
}
If I try the same query using Cubism.js, I get a "unable to find metrics":
var context = cubism.context()
.serverDelay(60 * 1000)
.step(60 * 1000)
.size(1440);
var graphite = context.graphite("http://graphite.metrics:8080");
graphite.find("metricXX*", function(error, results){
alert(error);
});
Why Cubism.js can't find the metrics if it internally does the same request?

Answer 1

It was not a Cubism.js bug after all. Actually, it was a Cross-site HTTP request.
I enabled the Web Developer Extention in the Chrome and noticed the message:
origin is not allowed by Access-Control-Allow-Origin
And fixed adding the code below in the Node.js:
var server = http.createServer(function (req, res) {
res.setHeader("Access-Control-Allow-Origin", "*");
res.setHeader("Access-Control-Allow-Headers", "X-Requested-With");
proxy.proxyRequest(req, res);
});