jssip/lib-es5/RTCSession/ReferSubscriber.js

the Javascript SIP library

"use strict";

function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

var EventEmitter = require('events').EventEmitter;

var Logger = require('../Logger');

var JsSIP_C = require('../Constants');

var Grammar = require('../Grammar');

var Utils = require('../Utils');

var logger = new Logger('RTCSession:ReferSubscriber');

module.exports = /*#__PURE__*/function (_EventEmitter) {
  _inherits(ReferSubscriber, _EventEmitter);

  var _super = _createSuper(ReferSubscriber);

  function ReferSubscriber(session) {
    var _this;

    _classCallCheck(this, ReferSubscriber);

    _this = _super.call(this);
    _this._id = null;
    _this._session = session;
    return _this;
  }

  _createClass(ReferSubscriber, [{
    key: "sendRefer",
    value: function sendRefer(target) {
      var _this2 = this;

      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
      logger.debug('sendRefer()');
      var extraHeaders = Utils.cloneArray(options.extraHeaders);
      var eventHandlers = Utils.cloneObject(options.eventHandlers); // Set event handlers.

      for (var event in eventHandlers) {
        if (Object.prototype.hasOwnProperty.call(eventHandlers, event)) {
          this.on(event, eventHandlers[event]);
        }
      } // Replaces URI header field.


      var replaces = null;

      if (options.replaces) {
        replaces = options.replaces._request.call_id;
        replaces += ";to-tag=".concat(options.replaces._to_tag);
        replaces += ";from-tag=".concat(options.replaces._from_tag);
        replaces = encodeURIComponent(replaces);
      } // Refer-To header field.


      var referTo = "Refer-To: <".concat(target).concat(replaces ? "?Replaces=".concat(replaces) : '', ">");
      extraHeaders.push(referTo); // Referred-By header field (if not already present).

      if (!extraHeaders.some(function (header) {
        return header.toLowerCase().startsWith('referred-by:');
      })) {
        var referredBy = "Referred-By: <".concat(this._session._ua._configuration.uri._scheme, ":").concat(this._session._ua._configuration.uri._user, "@").concat(this._session._ua._configuration.uri._host, ">");
        extraHeaders.push(referredBy);
      }

      extraHeaders.push("Contact: ".concat(this._session.contact));

      var request = this._session.sendRequest(JsSIP_C.REFER, {
        extraHeaders: extraHeaders,
        eventHandlers: {
          onSuccessResponse: function onSuccessResponse(response) {
            _this2._requestSucceeded(response);
          },
          onErrorResponse: function onErrorResponse(response) {
            _this2._requestFailed(response, JsSIP_C.causes.REJECTED);
          },
          onTransportError: function onTransportError() {
            _this2._requestFailed(null, JsSIP_C.causes.CONNECTION_ERROR);
          },
          onRequestTimeout: function onRequestTimeout() {
            _this2._requestFailed(null, JsSIP_C.causes.REQUEST_TIMEOUT);
          },
          onDialogError: function onDialogError() {
            _this2._requestFailed(null, JsSIP_C.causes.DIALOG_ERROR);
          }
        }
      });

      this._id = request.cseq;
    }
  }, {
    key: "receiveNotify",
    value: function receiveNotify(request) {
      logger.debug('receiveNotify()');

      if (!request.body) {
        return;
      }

      var status_line = Grammar.parse(request.body.trim().split('\r\n', 1)[0], 'Status_Line');

      if (status_line === -1) {
        logger.debug("receiveNotify() | error parsing NOTIFY body: \"".concat(request.body, "\""));
        return;
      }

      switch (true) {
        case /^100$/.test(status_line.status_code):
          this.emit('trying', {
            request: request,
            status_line: status_line
          });
          break;

        case /^1[0-9]{2}$/.test(status_line.status_code):
          this.emit('progress', {
            request: request,
            status_line: status_line
          });
          break;

        case /^2[0-9]{2}$/.test(status_line.status_code):
          this.emit('accepted', {
            request: request,
            status_line: status_line
          });
          break;

        default:
          this.emit('failed', {
            request: request,
            status_line: status_line
          });
          break;
      }
    }
  }, {
    key: "_requestSucceeded",
    value: function _requestSucceeded(response) {
      logger.debug('REFER succeeded');
      logger.debug('emit "requestSucceeded"');
      this.emit('requestSucceeded', {
        response: response
      });
    }
  }, {
    key: "_requestFailed",
    value: function _requestFailed(response, cause) {
      logger.debug('REFER failed');
      logger.debug('emit "requestFailed"');
      this.emit('requestFailed', {
        response: response || null,
        cause: cause
      });
    }
  }, {
    key: "id",
    get: function get() {
      return this._id;
    }
  }]);

  return ReferSubscriber;
}(EventEmitter);