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A Strophe plugin by iAdvize that use the XdomainRequest if found (Internet Explorer)
Strophe.addConnectionPlugin("xdomainrequest", {
init: function () {
if (window.XDomainRequest) {
Strophe.debug("using XdomainRequest for IE");
// override the send method to fire readystate 2
if (typeof XDomainRequest.prototype.oldsend == 'undefined') {
XDomainRequest.prototype.oldsend = XDomainRequest.prototype.send;
XDomainRequest.prototype.send = function() {
XDomainRequest.prototype.oldsend.apply(this, arguments);
this.readyState = 2;
try {
this.onreadystatechange();
} catch (e) {}
};
}
// replace Strophe.Request._newXHR with the xdomainrequest version
Strophe.Request.prototype._newXHR = function () {
var fireReadyStateChange = function (xhr, status) {
xhr.status = status;
xhr.readyState = 4;
try {
xhr.onreadystatechange();
} catch (e) {}
};
var xhr = new XDomainRequest();
xhr.readyState = 0;
xhr.onreadystatechange = this.func.bind(null, this);
xhr.onload = function () {
xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async = "false";
xmlDoc.loadXML(xhr.responseText);
xhr.responseXML = xmlDoc;
fireReadyStateChange(xhr, 200);
};
xhr.onerror = function () {
Strophe.error("Strophe xdr.onerror called");
fireReadyStateChange(xhr, 500);
};
xhr.ontimeout = function () {
Strophe.error("Strophe xdr.ontimeout called");
fireReadyStateChange(xhr, 500);
};
return xhr;
}
} else {
Strophe.info("XDomainRequest not found. Falling back to native XHR implementation.");
}
}
});
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