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/*!
* socket.io-node
* Copyright(c) 2011 LearnBoost <dev@learnboost.com>
* MIT Licensed
*/
/**
* Module requirements.
*/
var HTTPTransport = require('./http');
/**
* Exports the constructor.
*/
exports = module.exports = HTTPPolling;
/**
* HTTP polling constructor.
*
* @api public.
*/
function HTTPPolling (mng, data, req) {
HTTPTransport.call(this, mng, data, req);
};
/**
* Inherits from HTTPTransport.
*
* @api public.
*/
HTTPPolling.prototype.__proto__ = HTTPTransport.prototype;
/**
* Transport name
*
* @api public
*/
HTTPPolling.prototype.name = 'httppolling';
/**
* Override setHandlers
*
* @api private
*/
HTTPPolling.prototype.setHandlers = function () {
HTTPTransport.prototype.setHandlers.call(this);
this.socket.removeListener('end', this.bound.end);
this.socket.removeListener('close', this.bound.close);
};
/**
* Removes heartbeat timeouts for polling.
*/
HTTPPolling.prototype.setHeartbeatInterval = function () {
return this;
};
/**
* Handles a request
*
* @api private
*/
HTTPPolling.prototype.handleRequest = function (req) {
HTTPTransport.prototype.handleRequest.call(this, req);
if (req.method == 'GET') {
var self = this;
this.pollTimeout = setTimeout(function () {
self.packet({ type: 'noop' });
self.log.debug(self.name + ' closed due to exceeded duration');
}, this.manager.get('polling duration') * 1000);
this.log.debug('setting poll timeout');
}
};
/**
* Clears polling timeout
*
* @api private
*/
HTTPPolling.prototype.clearPollTimeout = function () {
if (this.pollTimeout) {
clearTimeout(this.pollTimeout);
this.pollTimeout = null;
this.log.debug('clearing poll timeout');
}
return this;
};
/**
* Override clear timeouts to clear the poll timeout
*
* @api private
*/
HTTPPolling.prototype.clearTimeouts = function () {
HTTPTransport.prototype.clearTimeouts.call(this);
this.clearPollTimeout();
};
/**
* doWrite to clear poll timeout
*
* @api private
*/
HTTPPolling.prototype.doWrite = function () {
this.clearPollTimeout();
};
/**
* Performs a write.
*
* @api private.
*/
HTTPPolling.prototype.write = function (data, close) {
this.doWrite(data);
this.response.end();
this.onClose();
};
/**
* Override end.
*
* @api private
*/
HTTPPolling.prototype.end = function (reason) {
this.clearPollTimeout();
return HTTPTransport.prototype.end.call(this, reason);
};
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