latte_web2/lib/io/transports/polling-jsonp.js

latte_webServer2

(function(define) { 'use strict';
	define("latte_web/io/transports/polling-jsonp", ["require", "exports", "module", "window"], 
	function(require, exports, module, window) {	
		var Polling = require("./polling")
			, latte_lib = require("latte_lib")
			, qs = require("querystring")
			, rDoubleSlashes = /\\\\n/g
			, rSlashes = /(\\)?\\n/g;
			module.exports = JSONP;
			function JSONP(req) {
				Polling.call(this, req);
				this.head = '___eio[' + (req._query.j || '').replace(/[^0-9]/g, '') + '](';
  				this.foot = ');';
			};
			latte_lib.inherits(JSONP, Polling);
			(function() {
				this.onData = function(data) {
					data = qs.parse(data).d;
					if("string" == typeof data) {
						data = data.replace(rSlashes, function(match,slashes) {
							return slashes ? match: "\n";
						});
						Polling.prototype.onData.call(this, data.replace(rDoubleSlashes, '\\n'));
					}
				}

				this.doWrite = function(data) {
					var js = JSON.stringify(data)
						.replace(/\u2028/g, "\\u2028")
						.replace(/\u2029/g, "\\u2029");
					data = this.head + js + this.foot;
					var headers = {
						'Content-Type': 'text/javascript; charset=UTF-8',
    					'Content-Length': Buffer.byteLength(data)
					};

					var ua = this.req.headers['user-agent'];
					if (ua && (~ua.indexOf(';MSIE') || ~ua.indexOf('Trident/'))) {
						headers['X-XSS-Protection'] = '0';
					}

					this.res.writeHead(200, this.headers(this.req, headers));
					this.res.end(data);
				}

				this.headers = function(req, headers) {
					headers = headers || {};
					if (/MSIE 8\.0/.test(req.headers['user-agent'])) {
					    headers['X-XSS-Protection'] = '0';
				  	}

					this.emit('headers', headers);
					return headers;
				}
			}).call(JSONP.prototype);
	});
})(typeof define === "function"? define: function(name, reqs, factory) { factory(require, exports, module); });