aaac7fed
 liuqimichale
add
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'use strict';
var util = require('util'),
HttpParser = require('../http_parser'),
Base = require('./base'),
Draft75 = require('./draft75'),
Draft76 = require('./draft76'),
Hybi = require('./hybi');
var Server = function(options) {
Base.call(this, null, null, options);
this._http = new HttpParser('request');
};
util.inherits(Server, Base);
var instance = {
EVENTS: ['open', 'message', 'error', 'close'],
_bindEventListeners: function() {
this.messages.on('error', function() {});
this.on('error', function() {});
},
parse: function(chunk) {
if (this._delegate) return this._delegate.parse(chunk);
this._http.parse(chunk);
if (!this._http.isComplete()) return;
this.method = this._http.method;
this.url = this._http.url;
this.headers = this._http.headers;
this.body = this._http.body;
var self = this;
this._delegate = Server.http(this, this._options);
this._delegate.messages = this.messages;
this._delegate.io = this.io;
this._open();
this.EVENTS.forEach(function(event) {
this._delegate.on(event, function(e) { self.emit(event, e) });
}, this);
this.protocol = this._delegate.protocol;
this.version = this._delegate.version;
this.parse(this._http.body);
this.emit('connect', new Base.ConnectEvent());
},
_open: function() {
this.__queue.forEach(function(msg) {
this._delegate[msg[0]].apply(this._delegate, msg[1]);
}, this);
this.__queue = [];
}
};
['addExtension', 'setHeader', 'start', 'frame', 'text', 'binary', 'ping', 'close'].forEach(function(method) {
instance[method] = function() {
if (this._delegate) {
return this._delegate[method].apply(this._delegate, arguments);
} else {
this.__queue.push([method, arguments]);
return true;
}
};
});
for (var key in instance)
Server.prototype[key] = instance[key];
Server.isSecureRequest = function(request) {
if (request.connection && request.connection.authorized !== undefined) return true;
if (request.socket && request.socket.secure) return true;
var headers = request.headers;
if (!headers) return false;
if (headers['https'] === 'on') return true;
if (headers['x-forwarded-ssl'] === 'on') return true;
if (headers['x-forwarded-scheme'] === 'https') return true;
if (headers['x-forwarded-proto'] === 'https') return true;
return false;
};
Server.determineUrl = function(request) {
var scheme = this.isSecureRequest(request) ? 'wss:' : 'ws:';
return scheme + '//' + request.headers.host + request.url;
};
Server.http = function(request, options) {
options = options || {};
if (options.requireMasking === undefined) options.requireMasking = true;
var headers = request.headers,
url = this.determineUrl(request);
if (headers['sec-websocket-version'])
return new Hybi(request, url, options);
else if (headers['sec-websocket-key1'])
return new Draft76(request, url, options);
else
return new Draft75(request, url, options);
};
module.exports = Server;
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