VLEX/BPM-UI/node_modules/@aspnet/signalr/dist/cjs/WebSocketTransport.js

"use strict";
// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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Object.defineProperty(exports, "__esModule", { value: true });
var ILogger_1 = require("./ILogger");
var ITransport_1 = require("./ITransport");
var Utils_1 = require("./Utils");
/** @private */
var WebSocketTransport = /** @class */ (function () {
    function WebSocketTransport(httpClient, accessTokenFactory, logger, logMessageContent, webSocketConstructor) {
        this.logger = logger;
        this.accessTokenFactory = accessTokenFactory;
        this.logMessageContent = logMessageContent;
        this.webSocketConstructor = webSocketConstructor;
        this.httpClient = httpClient;
        this.onreceive = null;
        this.onclose = null;
    }
    WebSocketTransport.prototype.connect = function (url, transferFormat) {
        return __awaiter(this, void 0, void 0, function () {
            var token;
            var _this = this;
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0:
                        Utils_1.Arg.isRequired(url, "url");
                        Utils_1.Arg.isRequired(transferFormat, "transferFormat");
                        Utils_1.Arg.isIn(transferFormat, ITransport_1.TransferFormat, "transferFormat");
                        this.logger.log(ILogger_1.LogLevel.Trace, "(WebSockets transport) Connecting.");
                        if (!this.accessTokenFactory) return [3 /*break*/, 2];
                        return [4 /*yield*/, this.accessTokenFactory()];
                    case 1:
                        token = _a.sent();
                        if (token) {
                            url += (url.indexOf("?") < 0 ? "?" : "&") + ("access_token=" + encodeURIComponent(token));
                        }
                        _a.label = 2;
                    case 2: return [2 /*return*/, new Promise(function (resolve, reject) {
                            url = url.replace(/^http/, "ws");
                            var webSocket;
                            var cookies = _this.httpClient.getCookieString(url);
                            if (typeof window === "undefined" && cookies) {
                                // Only pass cookies when in non-browser environments
                                webSocket = new _this.webSocketConstructor(url, undefined, {
                                    headers: {
                                        Cookie: "" + cookies,
                                    },
                                });
                            }
                            if (!webSocket) {
                                // Chrome is not happy with passing 'undefined' as protocol
                                webSocket = new _this.webSocketConstructor(url);
                            }
                            if (transferFormat === ITransport_1.TransferFormat.Binary) {
                                webSocket.binaryType = "arraybuffer";
                            }
                            // tslint:disable-next-line:variable-name
                            webSocket.onopen = function (_event) {
                                _this.logger.log(ILogger_1.LogLevel.Information, "WebSocket connected to " + url + ".");
                                _this.webSocket = webSocket;
                                resolve();
                            };
                            webSocket.onerror = function (event) {
                                var error = null;
                                // ErrorEvent is a browser only type we need to check if the type exists before using it
                                if (typeof ErrorEvent !== "undefined" && event instanceof ErrorEvent) {
                                    error = event.error;
                                }
                                reject(error);
                            };
                            webSocket.onmessage = function (message) {
                                _this.logger.log(ILogger_1.LogLevel.Trace, "(WebSockets transport) data received. " + Utils_1.getDataDetail(message.data, _this.logMessageContent) + ".");
                                if (_this.onreceive) {
                                    _this.onreceive(message.data);
                                }
                            };
                            webSocket.onclose = function (event) { return _this.close(event); };
                        })];
                }
            });
        });
    };
    WebSocketTransport.prototype.send = function (data) {
        if (this.webSocket && this.webSocket.readyState === this.webSocketConstructor.OPEN) {
            this.logger.log(ILogger_1.LogLevel.Trace, "(WebSockets transport) sending data. " + Utils_1.getDataDetail(data, this.logMessageContent) + ".");
            this.webSocket.send(data);
            return Promise.resolve();
        }
        return Promise.reject("WebSocket is not in the OPEN state");
    };
    WebSocketTransport.prototype.stop = function () {
        if (this.webSocket) {
            // Clear websocket handlers because we are considering the socket closed now
            this.webSocket.onclose = function () { };
            this.webSocket.onmessage = function () { };
            this.webSocket.onerror = function () { };
            this.webSocket.close();
            this.webSocket = undefined;
            // Manually invoke onclose callback inline so we know the HttpConnection was closed properly before returning
            // This also solves an issue where websocket.onclose could take 18+ seconds to trigger during network disconnects
            this.close(undefined);
        }
        return Promise.resolve();
    };
    WebSocketTransport.prototype.close = function (event) {
        // webSocket will be null if the transport did not start successfully
        this.logger.log(ILogger_1.LogLevel.Trace, "(WebSockets transport) socket closed.");
        if (this.onclose) {
            if (event && (event.wasClean === false || event.code !== 1000)) {
                this.onclose(new Error("WebSocket closed with status code: " + event.code + " (" + event.reason + ")."));
            }
            else {
                this.onclose();
            }
        }
    };
    return WebSocketTransport;
}());
exports.WebSocketTransport = WebSocketTransport;
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