122 lines
2.4 KiB
JavaScript
122 lines
2.4 KiB
JavaScript
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/*!
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* socket.io-node
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* Copyright(c) 2011 LearnBoost <dev@learnboost.com>
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* MIT Licensed
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*/
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/**
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* Module requirements.
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*/
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var Transport = require('../transport')
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, parser = require('../parser')
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, qs = require('querystring');
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/**
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* Export the constructor.
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*/
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exports = module.exports = HTTPTransport;
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/**
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* HTTP interface constructor. For all non-websocket transports.
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*
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* @api public
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*/
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function HTTPTransport (mng, data, req) {
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Transport.call(this, mng, data, req);
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};
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/**
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* Inherits from Transport.
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*/
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HTTPTransport.prototype.__proto__ = Transport.prototype;
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/**
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* Handles a request.
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*
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* @api private
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*/
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HTTPTransport.prototype.handleRequest = function (req) {
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// Always set the response in case an error is returned to the client
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this.response = req.res;
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if (req.method == 'POST') {
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var buffer = ''
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, res = req.res
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, origin = req.headers.origin
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, headers = { 'Content-Length': 1, 'Content-Type': 'text/plain; charset=UTF-8' }
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, self = this;
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req.on('data', function (data) {
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buffer += data;
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if (Buffer.byteLength(buffer) >= self.manager.get('destroy buffer size')) {
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buffer = '';
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req.connection.destroy();
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}
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});
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req.on('end', function () {
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res.writeHead(200, headers);
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res.end('1');
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self.onData(self.postEncoded ? qs.parse(buffer).d : buffer);
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});
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// prevent memory leaks for uncompleted requests
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req.on('close', function () {
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buffer = '';
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self.onClose();
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});
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if (origin) {
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// https://developer.mozilla.org/En/HTTP_Access_Control
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headers['Access-Control-Allow-Origin'] = origin;
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headers['Access-Control-Allow-Credentials'] = 'true';
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}
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} else {
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Transport.prototype.handleRequest.call(this, req);
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}
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};
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/**
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* Handles data payload.
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*
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* @api private
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*/
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HTTPTransport.prototype.onData = function (data) {
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var messages = parser.decodePayload(data);
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this.log.debug(this.name + ' received data packet', data);
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for (var i = 0, l = messages.length; i < l; i++) {
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this.onMessage(messages[i]);
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}
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};
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/**
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* Closes the request-response cycle
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*
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* @api private
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*/
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HTTPTransport.prototype.doClose = function () {
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this.response.end();
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};
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/**
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* Writes a payload of messages
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*
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* @api private
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*/
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HTTPTransport.prototype.payload = function (msgs) {
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this.write(parser.encodePayload(msgs));
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};
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