view release on metacpan or  search on metacpan

share/root/socket.io-0.9.16.js  view on Meta::CPAN

    function stateChange () {
      if (this.readyState == 4) {
        this.onreadystatechange = empty;
        self.posting = false;

        if (this.status == 200){
          self.socket.setBuffer(false);
        } else {
          self.onClose();
        }
      }
    }

    function onload () {
      this.onload = empty;
      self.socket.setBuffer(false);
    };

    this.sendXHR = this.request('POST');

    if (global.XDomainRequest && this.sendXHR instanceof XDomainRequest) {
      this.sendXHR.onload = this.sendXHR.onerror = onload;
    } else {
      this.sendXHR.onreadystatechange = stateChange;
    }

    this.sendXHR.send(data);
  };

  /**
   * Disconnects the established `XHR` connection.
   *
   * @returns {Transport}
   * @api public
   */

  XHR.prototype.close = function () {
    this.onClose();
    return this;
  };

  /**
   * Generates a configured XHR request
   *
   * @param {String} url The url that needs to be requested.
   * @param {String} method The method the request should use.
   * @returns {XMLHttpRequest}
   * @api private
   */

  XHR.prototype.request = function (method) {
    var req = io.util.request(this.socket.isXDomain())
      , query = io.util.query(this.socket.options.query, 't=' + +new Date);

    req.open(method || 'GET', this.prepareUrl() + query, true);

    if (method == 'POST') {
      try {
        if (req.setRequestHeader) {
          req.setRequestHeader('Content-type', 'text/plain;charset=UTF-8');
        } else {
          // XDomainRequest
          req.contentType = 'text/plain';
        }
      } catch (e) {}
    }

    return req;
  };

  /**
   * Returns the scheme to use for the transport URLs.
   *
   * @api private
   */

  XHR.prototype.scheme = function () {
    return this.socket.options.secure ? 'https' : 'http';
  };

  /**
   * Check if the XHR transports are supported
   *
   * @param {Boolean} xdomain Check if we support cross domain requests.
   * @returns {Boolean}
   * @api public
   */

  XHR.check = function (socket, xdomain) {
    try {
      var request = io.util.request(xdomain),
          usesXDomReq = (global.XDomainRequest && request instanceof XDomainRequest),
          socketProtocol = (socket && socket.options && socket.options.secure ? 'https:' : 'http:'),
          isXProtocol = (global.location && socketProtocol != global.location.protocol);
      if (request && !(usesXDomReq && isXProtocol)) {
        return true;
      }
    } catch(e) {}

    return false;
  };

  /**
   * Check if the XHR transport supports cross domain requests.
   *
   * @returns {Boolean}
   * @api public
   */

  XHR.xdomainCheck = function (socket) {
    return XHR.check(socket, true);
  };

})(
    'undefined' != typeof io ? io.Transport : module.exports
  , 'undefined' != typeof io ? io : module.parent.exports
  , this
);
/**
 * socket.io

share/root/socket.io-0.9.16.js  view on Meta::CPAN

   * @extends {io.Transport.xhr-polling}
   * @api public
   */

  function JSONPPolling (socket) {
    io.Transport['xhr-polling'].apply(this, arguments);

    this.index = io.j.length;

    var self = this;

    io.j.push(function (msg) {
      self._(msg);
    });
  };

  /**
   * Inherits from XHR polling transport.
   */

  io.util.inherit(JSONPPolling, io.Transport['xhr-polling']);

  /**
   * Transport name
   *
   * @api public
   */

  JSONPPolling.prototype.name = 'jsonp-polling';

  /**
   * Posts a encoded message to the Socket.IO server using an iframe.
   * The iframe is used because script tags can create POST based requests.
   * The iframe is positioned outside of the view so the user does not
   * notice it's existence.
   *
   * @param {String} data A encoded message.
   * @api private
   */

  JSONPPolling.prototype.post = function (data) {
    var self = this
      , query = io.util.query(
             this.socket.options.query
          , 't='+ (+new Date) + '&i=' + this.index
        );

    if (!this.form) {
      var form = document.createElement('form')
        , area = document.createElement('textarea')
        , id = this.iframeId = 'socketio_iframe_' + this.index
        , iframe;

      form.className = 'socketio';
      form.style.position = 'absolute';
      form.style.top = '0px';
      form.style.left = '0px';
      form.style.display = 'none';
      form.target = id;
      form.method = 'POST';
      form.setAttribute('accept-charset', 'utf-8');
      area.name = 'd';
      form.appendChild(area);
      document.body.appendChild(form);

      this.form = form;
      this.area = area;
    }

    this.form.action = this.prepareUrl() + query;

    function complete () {
      initIframe();
      self.socket.setBuffer(false);
    };

    function initIframe () {
      if (self.iframe) {
        self.form.removeChild(self.iframe);
      }

      try {
        // ie6 dynamic iframes with target="" support (thanks Chris Lambacher)
        iframe = document.createElement('<iframe name="'+ self.iframeId +'">');
      } catch (e) {
        iframe = document.createElement('iframe');
        iframe.name = self.iframeId;
      }

      iframe.id = self.iframeId;

      self.form.appendChild(iframe);
      self.iframe = iframe;
    };

    initIframe();

    // we temporarily stringify until we figure out how to prevent
    // browsers from turning `\n` into `\r\n` in form inputs
    this.area.value = io.JSON.stringify(data);

    try {
      this.form.submit();
    } catch(e) {}

    if (this.iframe.attachEvent) {
      iframe.onreadystatechange = function () {
        if (self.iframe.readyState == 'complete') {
          complete();
        }
      };
    } else {
      this.iframe.onload = complete;
    }

    this.socket.setBuffer(true);
  };

  /**
   * Creates a new JSONP poll that can be used to listen
   * for messages from the Socket.IO server.