intern/lib/channels/WebSocket.js

Intern. A next-generation code testing stack for JavaScript.

(function (factory) {
    if (typeof module === "object" && typeof module.exports === "object") {
        var v = factory(require, exports);
        if (v !== undefined) module.exports = v;
    }
    else if (typeof define === "function" && define.amd) {
        define(["require", "exports", "tslib", "@dojo/core/async/Task", "@dojo/shim/global", "./Base", "../browser/util"], factory);
    }
})(function (require, exports) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    var tslib_1 = require("tslib");
    var Task_1 = require("@dojo/core/async/Task");
    var global_1 = require("@dojo/shim/global");
    var Base_1 = require("./Base");
    var util_1 = require("../browser/util");
    var WebSocketChannel = (function (_super) {
        tslib_1.__extends(WebSocketChannel, _super);
        function WebSocketChannel(options) {
            var _this = _super.call(this, options) || this;
            if (_this.timeout == null) {
                _this.timeout = 10000;
            }
            if (!options.port) {
                throw new Error('A port is required for a WebSocket channel');
            }
            var url = util_1.parseUrl(options.url);
            var host = url.hostname;
            var protocol = url.protocol === 'https' ? 'wss' : 'ws';
            _this._socket = new global_1.default.WebSocket(protocol + "://" + host + ":" + options.port);
            _this._ready = new Task_1.default(function (resolve, reject) {
                _this._socket.addEventListener('open', resolve);
                _this._socket.addEventListener('error', reject);
            });
            _this._socket.addEventListener('message', function (event) {
                _this._handleMessage(JSON.parse(event.data));
            });
            _this._socket.addEventListener('error', function (_event) {
                _this._handleError(new Error('WebSocket error'));
            });
            _this._sendQueue = Object.create(null);
            _this._sequence = 1;
            return _this;
        }
        WebSocketChannel.prototype._sendData = function (name, data) {
            var _this = this;
            return this._ready.then(function () {
                return new Task_1.default(function (resolve, reject) {
                    var id = String(_this._sequence++);
                    var sessionId = _this.sessionId;
                    var message = { id: id, sessionId: sessionId, name: name, data: data };
                    _this._socket.send(JSON.stringify(message));
                    var timer = setTimeout(function () {
                        reject(new Error('Send timed out'));
                    }, _this.timeout);
                    _this._sendQueue[id] = {
                        resolve: function (data) {
                            clearTimeout(timer);
                            resolve(data);
                        },
                        reject: function (error) {
                            reject(error);
                        }
                    };
                });
            });
        };
        WebSocketChannel.prototype._handleMessage = function (message) {
            var id = message.id;
            this._sendQueue[id].resolve(message);
            this._sendQueue[id] = undefined;
        };
        WebSocketChannel.prototype._handleError = function (error) {
            var _this = this;
            this._ready = Task_1.default.reject(error);
            Object.keys(this._sendQueue)
                .filter(function (id) { return _this._sendQueue[id] != null; })
                .forEach(function (id) {
                _this._sendQueue[id].reject(error);
                _this._sendQueue[id] = undefined;
            });
        };
        return WebSocketChannel;
    }(Base_1.default));
    exports.default = WebSocketChannel;
});
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