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
  ;

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

function XhrReceiver(url, AjaxObject) {
  debug(url);
  EventEmitter.call(this);
  var self = this;

  this.bufferPosition = 0;

  this.xo = new AjaxObject('POST', url, null);
  this.xo.on('chunk', this._chunkHandler.bind(this));
  this.xo.once('finish', function(status, text) {
    debug('finish', status, text);
    self._chunkHandler(status, text);
    self.xo = null;
    var reason = status === 200 ? 'network' : 'permanent';
    debug('close', reason);
    self.emit('close', null, reason);
    self._cleanup();
  });
}

inherits(XhrReceiver, EventEmitter);

XhrReceiver.prototype._chunkHandler = function(status, text) {
  debug('_chunkHandler', status);
  if (status !== 200 || !text) {
    return;
  }

  for (var idx = -1; ; this.bufferPosition += idx + 1) {
    var buf = text.slice(this.bufferPosition);
    idx = buf.indexOf('\n');
    if (idx === -1) {
      break;
    }
    var msg = buf.slice(0, idx);
    if (msg) {
      debug('message', msg);
      this.emit('message', msg);
    }
  }
};

XhrReceiver.prototype._cleanup = function() {
  debug('_cleanup');
  this.removeAllListeners();
};

XhrReceiver.prototype.abort = function() {
  debug('abort');
  if (this.xo) {
    this.xo.close();
    debug('close');
    this.emit('close', null, 'user');
    this.xo = null;
  }
  this._cleanup();
};

module.exports = XhrReceiver;