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PHP Version: 7.4.3-4ubuntu2.29

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File Content: `base.js`

'use strict';

var Buffer  = require('safe-buffer').Buffer,
    Emitter = require('events').EventEmitter,
    util    = require('util'),
    streams = require('../streams'),
    Headers = require('./headers'),
    Reader  = require('./stream_reader');

var Base = function(request, url, options) {
  Emitter.call(this);
  Base.validateOptions(options || {}, ['maxLength', 'masking', 'requireMasking', 'protocols']);

  this._request   = request;
  this._reader    = new Reader();
  this._options   = options || {};
  this._maxLength = this._options.maxLength || this.MAX_LENGTH;
  this._headers   = new Headers();
  this.__queue    = [];
  this.readyState = 0;
  this.url        = url;

  this.io = new streams.IO(this);
  this.messages = new streams.Messages(this);
  this._bindEventListeners();
};
util.inherits(Base, Emitter);

Base.isWebSocket = function(request) {
  var connection = request.headers.connection || '',
      upgrade    = request.headers.upgrade || '';

  return request.method === 'GET' &&
         connection.toLowerCase().split(/ *, */).indexOf('upgrade') >= 0 &&
         upgrade.toLowerCase() === 'websocket';
};

Base.validateOptions = function(options, validKeys) {
  for (var key in options) {
    if (validKeys.indexOf(key) < 0)
      throw new Error('Unrecognized option: ' + key);
  }
};

var instance = {
  // This is 64MB, small enough for an average VPS to handle without
  // crashing from process out of memory
  MAX_LENGTH: 0x3ffffff,

  STATES: ['connecting', 'open', 'closing', 'closed'],

  _bindEventListeners: function() {
    var self = this;

    // Protocol errors are informational and do not have to be handled
    this.messages.on('error', function() {});

    this.on('message', function(event) {
      var messages = self.messages;
      if (messages.readable) messages.emit('data', event.data);
    });

    this.on('error', function(error) {
      var messages = self.messages;
      if (messages.readable) messages.emit('error', error);
    });

    this.on('close', function() {
      var messages = self.messages;
      if (!messages.readable) return;
      messages.readable = messages.writable = false;
      messages.emit('end');
    });
  },

  getState: function() {
    return this.STATES[this.readyState] || null;
  },

  addExtension: function(extension) {
    return false;
  },

  setHeader: function(name, value) {
    if (this.readyState > 0) return false;
    this._headers.set(name, value);
    return true;
  },

  start: function() {
    if (this.readyState !== 0) return false;

    if (!Base.isWebSocket(this._request))
      return this._failHandshake(new Error('Not a WebSocket request'));

    var response;

    try {
      response = this._handshakeResponse();
    } catch (error) {
      return this._failHandshake(error);
    }

    this._write(response);
    if (this._stage !== -1) this._open();
    return true;
  },

  _failHandshake: function(error) {
    var headers = new Headers();
    headers.set('Content-Type', 'text/plain');
    headers.set('Content-Length', Buffer.byteLength(error.message, 'utf8'));

    headers = ['HTTP/1.1 400 Bad Request', headers.toString(), error.message];
    this._write(Buffer.from(headers.join('\r\n'), 'utf8'));
    this._fail('protocol_error', error.message);

    return false;
  },

  text: function(message) {
    return this.frame(message);
  },

  binary: function(message) {
    return false;
  },

  ping: function() {
    return false;
  },

  pong: function() {
      return false;
  },

  close: function(reason, code) {
    if (this.readyState !== 1) return false;
    this.readyState = 3;
    this.emit('close', new Base.CloseEvent(null, null));
    return true;
  },

  _open: function() {
    this.readyState = 1;
    this.__queue.forEach(function(args) { this.frame.apply(this, args) }, this);
    this.__queue = [];
    this.emit('open', new Base.OpenEvent());
  },

  _queue: function(message) {
    this.__queue.push(message);
    return true;
  },

  _write: function(chunk) {
    var io = this.io;
    if (io.readable) io.emit('data', chunk);
  },

  _fail: function(type, message) {
    this.readyState = 2;
    this.emit('error', new Error(message));
    this.close();
  }
};

for (var key in instance)
  Base.prototype[key] = instance[key];


Base.ConnectEvent = function() {};

Base.OpenEvent = function() {};

Base.CloseEvent = function(code, reason) {
  this.code   = code;
  this.reason = reason;
};

Base.MessageEvent = function(data) {
  this.data = data;
};

Base.PingEvent = function(data) {
  this.data = data;
};

Base.PongEvent = function(data) {
  this.data = data;
};

module.exports = Base;

Name	Size	Permission
hybi	---	0755
base.js	4651 bytes	0644
client.js	4322 bytes	0644
draft75.js	3104 bytes	0644
draft76.js	3186 bytes	0644
headers.js	815 bytes	0644
hybi.js	14436 bytes	0644
proxy.js	2669 bytes	0644
server.js	3264 bytes	0644
stream_reader.js	1606 bytes	0644

Command Bosku:

File Content: base.js

File Content: `base.js`