Server : nginx/1.18.0 System : Linux localhost 6.14.3-x86_64-linode168 #1 SMP PREEMPT_DYNAMIC Mon Apr 21 19:47:55 EDT 2025 x86_64 User : www-data ( 33) PHP Version : 8.0.16 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /var/www/ecommerce/node_modules/sockjs-client/lib/transport/receiver/

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'use strict';

var inherits = require('inherits')
  , EventEmitter = require('events').EventEmitter
  , EventSourceDriver = require('eventsource')
  ;

var debug = function() {};
if (process.env.NODE_ENV !== 'production') {
  debug = require('debug')('sockjs-client:receiver:eventsource');
}

function EventSourceReceiver(url) {
  debug(url);
  EventEmitter.call(this);

  var self = this;
  var es = this.es = new EventSourceDriver(url);
  es.onmessage = function(e) {
    debug('message', e.data);
    self.emit('message', decodeURI(e.data));
  };
  es.onerror = function(e) {
    debug('error', es.readyState, e);
    // ES on reconnection has readyState = 0 or 1.
    // on network error it's CLOSED = 2
    var reason = (es.readyState !== 2 ? 'network' : 'permanent');
    self._cleanup();
    self._close(reason);
  };
}

inherits(EventSourceReceiver, EventEmitter);

EventSourceReceiver.prototype.abort = function() {
  debug('abort');
  this._cleanup();
  this._close('user');
};

EventSourceReceiver.prototype._cleanup = function() {
  debug('cleanup');
  var es = this.es;
  if (es) {
    es.onmessage = es.onerror = null;
    es.close();
    this.es = null;
  }
};

EventSourceReceiver.prototype._close = function(reason) {
  debug('close', reason);
  var self = this;
  // Safari and chrome < 15 crash if we close window before
  // waiting for ES cleanup. See:
  // https://code.google.com/p/chromium/issues/detail?id=89155
  setTimeout(function() {
    self.emit('close', null, reason);
    self.removeAllListeners();
  }, 200);
};

module.exports = EventSourceReceiver;