view mod_json_streams/strophe.jsonstreams.js @ 5585:5b316088bef5

mod_rest: Use logger of HTTP request in trunk In Prosody trunk rev c975dafa4303 each HTTP request gained its own log sink, to make it easy to log things related to each request and group those messages. Especially where async is used, spreading the request and response apart as mod_rest does with iq stanzas, this grouped logging should help find related messages.
author Kim Alvefur <zash@zash.se>
date Fri, 07 Jul 2023 00:10:37 +0200
parents 7dbde05b48a9
children
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/* jsonstreams plugin
**
** This plugin upgrades Strophe to support XEP-0295: JSON Encodings for XMPP
**
*/

Strophe.addConnectionPlugin('jsonstreams', {
    init: function (conn) {

        var parseXMLString = function(xmlStr) {
			var xmlDoc = null;
			if (window.ActiveXObject) {
				xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
				xmlDoc.async=false;
				xmlDoc.loadXML(xmlStr);
			} else {
				var parser = new DOMParser();
				xmlDoc = parser.parseFromString(xmlStr, "text/xml");
			}
			return xmlDoc;
        }

        // replace Strophe.Request._newXHR with new jsonstreams version
        // if JSON is detected
        if (window.JSON) {
        	var _newXHR = Strophe.Request.prototype._newXHR;
            Strophe.Request.prototype._newXHR = function () {
            	var _xhr = _newXHR.apply(this, arguments);
                var xhr = {
                	readyState: 0,
                	responseText: null,
                	responseXML: null,
                	status: null,
                	open: function(a, b, c) { return _xhr.open(a, b, c) },
                	abort: function() { _xhr.abort(); },
                	send: function(data) {
                		data = JSON.stringify({"s":data});
                		return _xhr.send(data);
                	}
                };
                var req = this;
                xhr.onreadystatechange = this.func.bind(null, this);
                _xhr.onreadystatechange = function() {
                	xhr.readyState = _xhr.readyState;
                	if (xhr.readyState != 4) {
                		xhr.status = 0;
                		xhr.responseText = "";
                		xhr.responseXML = null;
                	} else {
	                	xhr.status = _xhr.status;
	               		xhr.responseText = _xhr.responseText;
	               		xhr.responseXML = _xhr.responseXML;
	                	if (_xhr.responseText && !(_xhr.responseXML
	                			&& _xhr.responseXML.documentElement
	                			&& _xhr.responseXML.documentElement.tagName != "parsererror")) {
	                		var data = JSON.parse(_xhr.responseText);
	                		if (data && data.s) {
	                			xhr.responseText = data.s;
	                			xhr.responseXML = parseXMLString(data.s);
	                		}
	                	}
	                }
                	if ("function" == typeof xhr.onreadystatechange) { xhr.onreadystatechange(req); }
                }
                return xhr;
            };
        } else {
            Strophe.error("jsonstreams plugin loaded, but JSON not found." +
                          "  Falling back to native XHR implementation.");
        }
    }
});