(function webpackUniversalModuleDefinition(root, factory) {
if(typeof exports === 'object' && typeof module === 'object')
module.exports = factory();
else if(typeof define === 'function' && define.amd)
define([], factory);
else if(typeof exports === 'object')
exports["signalR"] = factory();
else
root["signalR"] = factory();
})(self, () => {
return /******/ (() => { // webpackBootstrap
/******/ "use strict";
/******/ // The require scope
/******/ var __webpack_require__ = {};
/******/
/************************************************************************/
/******/ /* webpack/runtime/define property getters */
/******/ (() => {
/******/ // define getter functions for harmony exports
/******/ __webpack_require__.d = (exports, definition) => {
/******/ for(var key in definition) {
/******/ if(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {
/******/ Object.defineProperty(exports, key, { enumerable: true, get: definition[key] });
/******/ }
/******/ }
/******/ };
/******/ })();
/******/
/******/ /* webpack/runtime/global */
/******/ (() => {
/******/ __webpack_require__.g = (function() {
/******/ if (typeof globalThis === 'object') return globalThis;
/******/ try {
/******/ return this || new Function('return this')();
/******/ } catch (e) {
/******/ if (typeof window === 'object') return window;
/******/ }
/******/ })();
/******/ })();
/******/
/******/ /* webpack/runtime/hasOwnProperty shorthand */
/******/ (() => {
/******/ __webpack_require__.o = (obj, prop) => (Object.prototype.hasOwnProperty.call(obj, prop))
/******/ })();
/******/
/******/ /* webpack/runtime/make namespace object */
/******/ (() => {
/******/ // define __esModule on exports
/******/ __webpack_require__.r = (exports) => {
/******/ if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
/******/ Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
/******/ }
/******/ Object.defineProperty(exports, '__esModule', { value: true });
/******/ };
/******/ })();
/******/
/************************************************************************/
var __webpack_exports__ = {};
// ESM COMPAT FLAG
__webpack_require__.r(__webpack_exports__);
// EXPORTS
__webpack_require__.d(__webpack_exports__, {
"AbortError": () => (/* reexport */ AbortError),
"DefaultHttpClient": () => (/* reexport */ DefaultHttpClient),
"HttpClient": () => (/* reexport */ HttpClient),
"HttpError": () => (/* reexport */ HttpError),
"HttpResponse": () => (/* reexport */ HttpResponse),
"HttpTransportType": () => (/* reexport */ HttpTransportType),
"HubConnection": () => (/* reexport */ HubConnection),
"HubConnectionBuilder": () => (/* reexport */ HubConnectionBuilder),
"HubConnectionState": () => (/* reexport */ HubConnectionState),
"JsonHubProtocol": () => (/* reexport */ JsonHubProtocol),
"LogLevel": () => (/* reexport */ LogLevel),
"MessageType": () => (/* reexport */ MessageType),
"NullLogger": () => (/* reexport */ NullLogger),
"Subject": () => (/* reexport */ Subject),
"TimeoutError": () => (/* reexport */ TimeoutError),
"TransferFormat": () => (/* reexport */ TransferFormat),
"VERSION": () => (/* reexport */ VERSION)
});
;// CONCATENATED MODULE: ./src/Errors.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
/** Error thrown when an HTTP request fails. */
class HttpError extends Error {
/** Constructs a new instance of {@link @microsoft/signalr.HttpError}.
*
* @param {string} errorMessage A descriptive error message.
* @param {number} statusCode The HTTP status code represented by this error.
*/
constructor(errorMessage, statusCode) {
const trueProto = new.target.prototype;
super(`${errorMessage}: Status code '${statusCode}'`);
this.statusCode = statusCode;
// Workaround issue in Typescript compiler
// https://github.com/Microsoft/TypeScript/issues/13965#issuecomment-278570200
this.__proto__ = trueProto;
}
}
/** Error thrown when a timeout elapses. */
class TimeoutError extends Error {
/** Constructs a new instance of {@link @microsoft/signalr.TimeoutError}.
*
* @param {string} errorMessage A descriptive error message.
*/
constructor(errorMessage = "A timeout occurred.") {
const trueProto = new.target.prototype;
super(errorMessage);
// Workaround issue in Typescript compiler
// https://github.com/Microsoft/TypeScript/issues/13965#issuecomment-278570200
this.__proto__ = trueProto;
}
}
/** Error thrown when an action is aborted. */
class AbortError extends Error {
/** Constructs a new instance of {@link AbortError}.
*
* @param {string} errorMessage A descriptive error message.
*/
constructor(errorMessage = "An abort occurred.") {
const trueProto = new.target.prototype;
super(errorMessage);
// Workaround issue in Typescript compiler
// https://github.com/Microsoft/TypeScript/issues/13965#issuecomment-278570200
this.__proto__ = trueProto;
}
}
/** Error thrown when the selected transport is unsupported by the browser. */
/** @private */
class UnsupportedTransportError extends Error {
/** Constructs a new instance of {@link @microsoft/signalr.UnsupportedTransportError}.
*
* @param {string} message A descriptive error message.
* @param {HttpTransportType} transport The {@link @microsoft/signalr.HttpTransportType} this error occurred on.
*/
constructor(message, transport) {
const trueProto = new.target.prototype;
super(message);
this.transport = transport;
this.errorType = 'UnsupportedTransportError';
// Workaround issue in Typescript compiler
// https://github.com/Microsoft/TypeScript/issues/13965#issuecomment-278570200
this.__proto__ = trueProto;
}
}
/** Error thrown when the selected transport is disabled by the browser. */
/** @private */
class DisabledTransportError extends Error {
/** Constructs a new instance of {@link @microsoft/signalr.DisabledTransportError}.
*
* @param {string} message A descriptive error message.
* @param {HttpTransportType} transport The {@link @microsoft/signalr.HttpTransportType} this error occurred on.
*/
constructor(message, transport) {
const trueProto = new.target.prototype;
super(message);
this.transport = transport;
this.errorType = 'DisabledTransportError';
// Workaround issue in Typescript compiler
// https://github.com/Microsoft/TypeScript/issues/13965#issuecomment-278570200
this.__proto__ = trueProto;
}
}
/** Error thrown when the selected transport cannot be started. */
/** @private */
class FailedToStartTransportError extends Error {
/** Constructs a new instance of {@link @microsoft/signalr.FailedToStartTransportError}.
*
* @param {string} message A descriptive error message.
* @param {HttpTransportType} transport The {@link @microsoft/signalr.HttpTransportType} this error occurred on.
*/
constructor(message, transport) {
const trueProto = new.target.prototype;
super(message);
this.transport = transport;
this.errorType = 'FailedToStartTransportError';
// Workaround issue in Typescript compiler
// https://github.com/Microsoft/TypeScript/issues/13965#issuecomment-278570200
this.__proto__ = trueProto;
}
}
/** Error thrown when the negotiation with the server failed to complete. */
/** @private */
class FailedToNegotiateWithServerError extends Error {
/** Constructs a new instance of {@link @microsoft/signalr.FailedToNegotiateWithServerError}.
*
* @param {string} message A descriptive error message.
*/
constructor(message) {
const trueProto = new.target.prototype;
super(message);
this.errorType = 'FailedToNegotiateWithServerError';
// Workaround issue in Typescript compiler
// https://github.com/Microsoft/TypeScript/issues/13965#issuecomment-278570200
this.__proto__ = trueProto;
}
}
/** Error thrown when multiple errors have occurred. */
/** @private */
class AggregateErrors extends Error {
/** Constructs a new instance of {@link @microsoft/signalr.AggregateErrors}.
*
* @param {string} message A descriptive error message.
* @param {Error[]} innerErrors The collection of errors this error is aggregating.
*/
constructor(message, innerErrors) {
const trueProto = new.target.prototype;
super(message);
this.innerErrors = innerErrors;
// Workaround issue in Typescript compiler
// https://github.com/Microsoft/TypeScript/issues/13965#issuecomment-278570200
this.__proto__ = trueProto;
}
}
;// CONCATENATED MODULE: ./src/HttpClient.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
/** Represents an HTTP response. */
class HttpResponse {
constructor(statusCode, statusText, content) {
this.statusCode = statusCode;
this.statusText = statusText;
this.content = content;
}
}
/** Abstraction over an HTTP client.
*
* This class provides an abstraction over an HTTP client so that a different implementation can be provided on different platforms.
*/
class HttpClient {
get(url, options) {
return this.send({
...options,
method: "GET",
url,
});
}
post(url, options) {
return this.send({
...options,
method: "POST",
url,
});
}
delete(url, options) {
return this.send({
...options,
method: "DELETE",
url,
});
}
/** Gets all cookies that apply to the specified URL.
*
* @param url The URL that the cookies are valid for.
* @returns {string} A string containing all the key-value cookie pairs for the specified URL.
*/
// @ts-ignore
getCookieString(url) {
return "";
}
}
;// CONCATENATED MODULE: ./src/ILogger.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// These values are designed to match the ASP.NET Log Levels since that's the pattern we're emulating here.
/** Indicates the severity of a log message.
*
* Log Levels are ordered in increasing severity. So `Debug` is more severe than `Trace`, etc.
*/
var LogLevel;
(function (LogLevel) {
/** Log level for very low severity diagnostic messages. */
LogLevel[LogLevel["Trace"] = 0] = "Trace";
/** Log level for low severity diagnostic messages. */
LogLevel[LogLevel["Debug"] = 1] = "Debug";
/** Log level for informational diagnostic messages. */
LogLevel[LogLevel["Information"] = 2] = "Information";
/** Log level for diagnostic messages that indicate a non-fatal problem. */
LogLevel[LogLevel["Warning"] = 3] = "Warning";
/** Log level for diagnostic messages that indicate a failure in the current operation. */
LogLevel[LogLevel["Error"] = 4] = "Error";
/** Log level for diagnostic messages that indicate a failure that will terminate the entire application. */
LogLevel[LogLevel["Critical"] = 5] = "Critical";
/** The highest possible log level. Used when configuring logging to indicate that no log messages should be emitted. */
LogLevel[LogLevel["None"] = 6] = "None";
})(LogLevel || (LogLevel = {}));
;// CONCATENATED MODULE: ./src/Loggers.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
/** A logger that does nothing when log messages are sent to it. */
class NullLogger {
constructor() { }
/** @inheritDoc */
// eslint-disable-next-line
log(_logLevel, _message) {
}
}
/** The singleton instance of the {@link @microsoft/signalr.NullLogger}. */
NullLogger.instance = new NullLogger();
;// CONCATENATED MODULE: ./src/Utils.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// Version token that will be replaced by the prepack command
/** The version of the SignalR client. */
const VERSION = "7.0.5";
/** @private */
class Arg {
static isRequired(val, name) {
if (val === null || val === undefined) {
throw new Error(`The '${name}' argument is required.`);
}
}
static isNotEmpty(val, name) {
if (!val || val.match(/^\s*$/)) {
throw new Error(`The '${name}' argument should not be empty.`);
}
}
static isIn(val, values, name) {
// TypeScript enums have keys for **both** the name and the value of each enum member on the type itself.
if (!(val in values)) {
throw new Error(`Unknown ${name} value: ${val}.`);
}
}
}
/** @private */
class Platform {
// react-native has a window but no document so we should check both
static get isBrowser() {
return typeof window === "object" && typeof window.document === "object";
}
// WebWorkers don't have a window object so the isBrowser check would fail
static get isWebWorker() {
return typeof self === "object" && "importScripts" in self;
}
// react-native has a window but no document
static get isReactNative() {
return typeof window === "object" && typeof window.document === "undefined";
}
// Node apps shouldn't have a window object, but WebWorkers don't either
// so we need to check for both WebWorker and window
static get isNode() {
return !this.isBrowser && !this.isWebWorker && !this.isReactNative;
}
}
/** @private */
function getDataDetail(data, includeContent) {
let detail = "";
if (isArrayBuffer(data)) {
detail = `Binary data of length ${data.byteLength}`;
if (includeContent) {
detail += `. Content: '${formatArrayBuffer(data)}'`;
}
}
else if (typeof data === "string") {
detail = `String data of length ${data.length}`;
if (includeContent) {
detail += `. Content: '${data}'`;
}
}
return detail;
}
/** @private */
function formatArrayBuffer(data) {
const view = new Uint8Array(data);
// Uint8Array.map only supports returning another Uint8Array?
let str = "";
view.forEach((num) => {
const pad = num < 16 ? "0" : "";
str += `0x${pad}${num.toString(16)} `;
});
// Trim of trailing space.
return str.substr(0, str.length - 1);
}
// Also in signalr-protocol-msgpack/Utils.ts
/** @private */
function isArrayBuffer(val) {
return val && typeof ArrayBuffer !== "undefined" &&
(val instanceof ArrayBuffer ||
// Sometimes we get an ArrayBuffer that doesn't satisfy instanceof
(val.constructor && val.constructor.name === "ArrayBuffer"));
}
/** @private */
async function sendMessage(logger, transportName, httpClient, url, content, options) {
const headers = {};
const [name, value] = getUserAgentHeader();
headers[name] = value;
logger.log(LogLevel.Trace, `(${transportName} transport) sending data. ${getDataDetail(content, options.logMessageContent)}.`);
const responseType = isArrayBuffer(content) ? "arraybuffer" : "text";
const response = await httpClient.post(url, {
content,
headers: { ...headers, ...options.headers },
responseType,
timeout: options.timeout,
withCredentials: options.withCredentials,
});
logger.log(LogLevel.Trace, `(${transportName} transport) request complete. Response status: ${response.statusCode}.`);
}
/** @private */
function createLogger(logger) {
if (logger === undefined) {
return new ConsoleLogger(LogLevel.Information);
}
if (logger === null) {
return NullLogger.instance;
}
if (logger.log !== undefined) {
return logger;
}
return new ConsoleLogger(logger);
}
/** @private */
class SubjectSubscription {
constructor(subject, observer) {
this._subject = subject;
this._observer = observer;
}
dispose() {
const index = this._subject.observers.indexOf(this._observer);
if (index > -1) {
this._subject.observers.splice(index, 1);
}
if (this._subject.observers.length === 0 && this._subject.cancelCallback) {
this._subject.cancelCallback().catch((_) => { });
}
}
}
/** @private */
class ConsoleLogger {
constructor(minimumLogLevel) {
this._minLevel = minimumLogLevel;
this.out = console;
}
log(logLevel, message) {
if (logLevel >= this._minLevel) {
const msg = `[${new Date().toISOString()}] ${LogLevel[logLevel]}: ${message}`;
switch (logLevel) {
case LogLevel.Critical:
case LogLevel.Error:
this.out.error(msg);
break;
case LogLevel.Warning:
this.out.warn(msg);
break;
case LogLevel.Information:
this.out.info(msg);
break;
default:
// console.debug only goes to attached debuggers in Node, so we use console.log for Trace and Debug
this.out.log(msg);
break;
}
}
}
}
/** @private */
function getUserAgentHeader() {
let userAgentHeaderName = "X-SignalR-User-Agent";
if (Platform.isNode) {
userAgentHeaderName = "User-Agent";
}
return [userAgentHeaderName, constructUserAgent(VERSION, getOsName(), getRuntime(), getRuntimeVersion())];
}
/** @private */
function constructUserAgent(version, os, runtime, runtimeVersion) {
// Microsoft SignalR/[Version] ([Detailed Version]; [Operating System]; [Runtime]; [Runtime Version])
let userAgent = "Microsoft SignalR/";
const majorAndMinor = version.split(".");
userAgent += `${majorAndMinor[0]}.${majorAndMinor[1]}`;
userAgent += ` (${version}; `;
if (os && os !== "") {
userAgent += `${os}; `;
}
else {
userAgent += "Unknown OS; ";
}
userAgent += `${runtime}`;
if (runtimeVersion) {
userAgent += `; ${runtimeVersion}`;
}
else {
userAgent += "; Unknown Runtime Version";
}
userAgent += ")";
return userAgent;
}
// eslint-disable-next-line spaced-comment
/*#__PURE__*/ function getOsName() {
if (Platform.isNode) {
switch (process.platform) {
case "win32":
return "Windows NT";
case "darwin":
return "macOS";
case "linux":
return "Linux";
default:
return process.platform;
}
}
else {
return "";
}
}
// eslint-disable-next-line spaced-comment
/*#__PURE__*/ function getRuntimeVersion() {
if (Platform.isNode) {
return process.versions.node;
}
return undefined;
}
function getRuntime() {
if (Platform.isNode) {
return "NodeJS";
}
else {
return "Browser";
}
}
/** @private */
function getErrorString(e) {
if (e.stack) {
return e.stack;
}
else if (e.message) {
return e.message;
}
return `${e}`;
}
/** @private */
function getGlobalThis() {
// globalThis is semi-new and not available in Node until v12
if (typeof globalThis !== "undefined") {
return globalThis;
}
if (typeof self !== "undefined") {
return self;
}
if (typeof window !== "undefined") {
return window;
}
if (typeof __webpack_require__.g !== "undefined") {
return __webpack_require__.g;
}
throw new Error("could not find global");
}
;// CONCATENATED MODULE: ./src/FetchHttpClient.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
class FetchHttpClient extends HttpClient {
constructor(logger) {
super();
this._logger = logger;
if (typeof fetch === "undefined") {
// In order to ignore the dynamic require in webpack builds we need to do this magic
// @ts-ignore: TS doesn't know about these names
const requireFunc = true ? require : 0;
// Cookies aren't automatically handled in Node so we need to add a CookieJar to preserve cookies across requests
this._jar = new (requireFunc("tough-cookie")).CookieJar();
this._fetchType = requireFunc("node-fetch");
// node-fetch doesn't have a nice API for getting and setting cookies
// fetch-cookie will wrap a fetch implementation with a default CookieJar or a provided one
this._fetchType = requireFunc("fetch-cookie")(this._fetchType, this._jar);
}
else {
this._fetchType = fetch.bind(getGlobalThis());
}
if (typeof AbortController === "undefined") {
// In order to ignore the dynamic require in webpack builds we need to do this magic
// @ts-ignore: TS doesn't know about these names
const requireFunc = true ? require : 0;
// Node needs EventListener methods on AbortController which our custom polyfill doesn't provide
this._abortControllerType = requireFunc("abort-controller");
}
else {
this._abortControllerType = AbortController;
}
}
/** @inheritDoc */
async send(request) {
// Check that abort was not signaled before calling send
if (request.abortSignal && request.abortSignal.aborted) {
throw new AbortError();
}
if (!request.method) {
throw new Error("No method defined.");
}
if (!request.url) {
throw new Error("No url defined.");
}
const abortController = new this._abortControllerType();
let error;
// Hook our abortSignal into the abort controller
if (request.abortSignal) {
request.abortSignal.onabort = () => {
abortController.abort();
error = new AbortError();
};
}
// If a timeout has been passed in, setup a timeout to call abort
// Type needs to be any to fit window.setTimeout and NodeJS.setTimeout
let timeoutId = null;
if (request.timeout) {
const msTimeout = request.timeout;
timeoutId = setTimeout(() => {
abortController.abort();
this._logger.log(LogLevel.Warning, `Timeout from HTTP request.`);
error = new TimeoutError();
}, msTimeout);
}
if (request.content === "") {
request.content = undefined;
}
if (request.content) {
// Explicitly setting the Content-Type header for React Native on Android platform.
request.headers = request.headers || {};
if (isArrayBuffer(request.content)) {
request.headers["Content-Type"] = "application/octet-stream";
}
else {
request.headers["Content-Type"] = "text/plain;charset=UTF-8";
}
}
let response;
try {
response = await this._fetchType(request.url, {
body: request.content,
cache: "no-cache",
credentials: request.withCredentials === true ? "include" : "same-origin",
headers: {
"X-Requested-With": "XMLHttpRequest",
...request.headers,
},
method: request.method,
mode: "cors",
redirect: "follow",
signal: abortController.signal,
});
}
catch (e) {
if (error) {
throw error;
}
this._logger.log(LogLevel.Warning, `Error from HTTP request. ${e}.`);
throw e;
}
finally {
if (timeoutId) {
clearTimeout(timeoutId);
}
if (request.abortSignal) {
request.abortSignal.onabort = null;
}
}
if (!response.ok) {
const errorMessage = await deserializeContent(response, "text");
throw new HttpError(errorMessage || response.statusText, response.status);
}
const content = deserializeContent(response, request.responseType);
const payload = await content;
return new HttpResponse(response.status, response.statusText, payload);
}
getCookieString(url) {
let cookies = "";
if (Platform.isNode && this._jar) {
// @ts-ignore: unused variable
this._jar.getCookies(url, (e, c) => cookies = c.join("; "));
}
return cookies;
}
}
function deserializeContent(response, responseType) {
let content;
switch (responseType) {
case "arraybuffer":
content = response.arrayBuffer();
break;
case "text":
content = response.text();
break;
case "blob":
case "document":
case "json":
throw new Error(`${responseType} is not supported.`);
default:
content = response.text();
break;
}
return content;
}
;// CONCATENATED MODULE: ./src/XhrHttpClient.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
class XhrHttpClient extends HttpClient {
constructor(logger) {
super();
this._logger = logger;
}
/** @inheritDoc */
send(request) {
// Check that abort was not signaled before calling send
if (request.abortSignal && request.abortSignal.aborted) {
return Promise.reject(new AbortError());
}
if (!request.method) {
return Promise.reject(new Error("No method defined."));
}
if (!request.url) {
return Promise.reject(new Error("No url defined."));
}
return new Promise((resolve, reject) => {
const xhr = new XMLHttpRequest();
xhr.open(request.method, request.url, true);
xhr.withCredentials = request.withCredentials === undefined ? true : request.withCredentials;
xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
if (request.content === "") {
request.content = undefined;
}
if (request.content) {
// Explicitly setting the Content-Type header for React Native on Android platform.
if (isArrayBuffer(request.content)) {
xhr.setRequestHeader("Content-Type", "application/octet-stream");
}
else {
xhr.setRequestHeader("Content-Type", "text/plain;charset=UTF-8");
}
}
const headers = request.headers;
if (headers) {
Object.keys(headers)
.forEach((header) => {
xhr.setRequestHeader(header, headers[header]);
});
}
if (request.responseType) {
xhr.responseType = request.responseType;
}
if (request.abortSignal) {
request.abortSignal.onabort = () => {
xhr.abort();
reject(new AbortError());
};
}
if (request.timeout) {
xhr.timeout = request.timeout;
}
xhr.onload = () => {
if (request.abortSignal) {
request.abortSignal.onabort = null;
}
if (xhr.status >= 200 && xhr.status < 300) {
resolve(new HttpResponse(xhr.status, xhr.statusText, xhr.response || xhr.responseText));
}
else {
reject(new HttpError(xhr.response || xhr.responseText || xhr.statusText, xhr.status));
}
};
xhr.onerror = () => {
this._logger.log(LogLevel.Warning, `Error from HTTP request. ${xhr.status}: ${xhr.statusText}.`);
reject(new HttpError(xhr.statusText, xhr.status));
};
xhr.ontimeout = () => {
this._logger.log(LogLevel.Warning, `Timeout from HTTP request.`);
reject(new TimeoutError());
};
xhr.send(request.content);
});
}
}
;// CONCATENATED MODULE: ./src/DefaultHttpClient.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
/** Default implementation of {@link @microsoft/signalr.HttpClient}. */
class DefaultHttpClient extends HttpClient {
/** Creates a new instance of the {@link @microsoft/signalr.DefaultHttpClient}, using the provided {@link @microsoft/signalr.ILogger} to log messages. */
constructor(logger) {
super();
if (typeof fetch !== "undefined" || Platform.isNode) {
this._httpClient = new FetchHttpClient(logger);
}
else if (typeof XMLHttpRequest !== "undefined") {
this._httpClient = new XhrHttpClient(logger);
}
else {
throw new Error("No usable HttpClient found.");
}
}
/** @inheritDoc */
send(request) {
// Check that abort was not signaled before calling send
if (request.abortSignal && request.abortSignal.aborted) {
return Promise.reject(new AbortError());
}
if (!request.method) {
return Promise.reject(new Error("No method defined."));
}
if (!request.url) {
return Promise.reject(new Error("No url defined."));
}
return this._httpClient.send(request);
}
getCookieString(url) {
return this._httpClient.getCookieString(url);
}
}
;// CONCATENATED MODULE: ./src/TextMessageFormat.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// Not exported from index
/** @private */
class TextMessageFormat {
static write(output) {
return `${output}${TextMessageFormat.RecordSeparator}`;
}
static parse(input) {
if (input[input.length - 1] !== TextMessageFormat.RecordSeparator) {
throw new Error("Message is incomplete.");
}
const messages = input.split(TextMessageFormat.RecordSeparator);
messages.pop();
return messages;
}
}
TextMessageFormat.RecordSeparatorCode = 0x1e;
TextMessageFormat.RecordSeparator = String.fromCharCode(TextMessageFormat.RecordSeparatorCode);
;// CONCATENATED MODULE: ./src/HandshakeProtocol.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
/** @private */
class HandshakeProtocol {
// Handshake request is always JSON
writeHandshakeRequest(handshakeRequest) {
return TextMessageFormat.write(JSON.stringify(handshakeRequest));
}
parseHandshakeResponse(data) {
let messageData;
let remainingData;
if (isArrayBuffer(data)) {
// Format is binary but still need to read JSON text from handshake response
const binaryData = new Uint8Array(data);
const separatorIndex = binaryData.indexOf(TextMessageFormat.RecordSeparatorCode);
if (separatorIndex === -1) {
throw new Error("Message is incomplete.");
}
// content before separator is handshake response
// optional content after is additional messages
const responseLength = separatorIndex + 1;
messageData = String.fromCharCode.apply(null, Array.prototype.slice.call(binaryData.slice(0, responseLength)));
remainingData = (binaryData.byteLength > responseLength) ? binaryData.slice(responseLength).buffer : null;
}
else {
const textData = data;
const separatorIndex = textData.indexOf(TextMessageFormat.RecordSeparator);
if (separatorIndex === -1) {
throw new Error("Message is incomplete.");
}
// content before separator is handshake response
// optional content after is additional messages
const responseLength = separatorIndex + 1;
messageData = textData.substring(0, responseLength);
remainingData = (textData.length > responseLength) ? textData.substring(responseLength) : null;
}
// At this point we should have just the single handshake message
const messages = TextMessageFormat.parse(messageData);
const response = JSON.parse(messages[0]);
if (response.type) {
throw new Error("Expected a handshake response from the server.");
}
const responseMessage = response;
// multiple messages could have arrived with handshake
// return additional data to be parsed as usual, or null if all parsed
return [remainingData, responseMessage];
}
}
;// CONCATENATED MODULE: ./src/IHubProtocol.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
/** Defines the type of a Hub Message. */
var MessageType;
(function (MessageType) {
/** Indicates the message is an Invocation message and implements the {@link @microsoft/signalr.InvocationMessage} interface. */
MessageType[MessageType["Invocation"] = 1] = "Invocation";
/** Indicates the message is a StreamItem message and implements the {@link @microsoft/signalr.StreamItemMessage} interface. */
MessageType[MessageType["StreamItem"] = 2] = "StreamItem";
/** Indicates the message is a Completion message and implements the {@link @microsoft/signalr.CompletionMessage} interface. */
MessageType[MessageType["Completion"] = 3] = "Completion";
/** Indicates the message is a Stream Invocation message and implements the {@link @microsoft/signalr.StreamInvocationMessage} interface. */
MessageType[MessageType["StreamInvocation"] = 4] = "StreamInvocation";
/** Indicates the message is a Cancel Invocation message and implements the {@link @microsoft/signalr.CancelInvocationMessage} interface. */
MessageType[MessageType["CancelInvocation"] = 5] = "CancelInvocation";
/** Indicates the message is a Ping message and implements the {@link @microsoft/signalr.PingMessage} interface. */
MessageType[MessageType["Ping"] = 6] = "Ping";
/** Indicates the message is a Close message and implements the {@link @microsoft/signalr.CloseMessage} interface. */
MessageType[MessageType["Close"] = 7] = "Close";
})(MessageType || (MessageType = {}));
;// CONCATENATED MODULE: ./src/Subject.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
/** Stream implementation to stream items to the server. */
class Subject {
constructor() {
this.observers = [];
}
next(item) {
for (const observer of this.observers) {
observer.next(item);
}
}
error(err) {
for (const observer of this.observers) {
if (observer.error) {
observer.error(err);
}
}
}
complete() {
for (const observer of this.observers) {
if (observer.complete) {
observer.complete();
}
}
}
subscribe(observer) {
this.observers.push(observer);
return new SubjectSubscription(this, observer);
}
}
;// CONCATENATED MODULE: ./src/HubConnection.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
const DEFAULT_TIMEOUT_IN_MS = 30 * 1000;
const DEFAULT_PING_INTERVAL_IN_MS = 15 * 1000;
/** Describes the current state of the {@link HubConnection} to the server. */
var HubConnectionState;
(function (HubConnectionState) {
/** The hub connection is disconnected. */
HubConnectionState["Disconnected"] = "Disconnected";
/** The hub connection is connecting. */
HubConnectionState["Connecting"] = "Connecting";
/** The hub connection is connected. */
HubConnectionState["Connected"] = "Connected";
/** The hub connection is disconnecting. */
HubConnectionState["Disconnecting"] = "Disconnecting";
/** The hub connection is reconnecting. */
HubConnectionState["Reconnecting"] = "Reconnecting";
})(HubConnectionState || (HubConnectionState = {}));
/** Represents a connection to a SignalR Hub. */
class HubConnection {
constructor(connection, logger, protocol, reconnectPolicy) {
this._nextKeepAlive = 0;
this._freezeEventListener = () => {
this._logger.log(LogLevel.Warning, "The page is being frozen, this will likely lead to the connection being closed and messages being lost. For more information see the docs at https://docs.microsoft.com/aspnet/core/signalr/javascript-client#bsleep");
};
Arg.isRequired(connection, "connection");
Arg.isRequired(logger, "logger");
Arg.isRequired(protocol, "protocol");
this.serverTimeoutInMilliseconds = DEFAULT_TIMEOUT_IN_MS;
this.keepAliveIntervalInMilliseconds = DEFAULT_PING_INTERVAL_IN_MS;
this._logger = logger;
this._protocol = protocol;
this.connection = connection;
this._reconnectPolicy = reconnectPolicy;
this._handshakeProtocol = new HandshakeProtocol();
this.connection.onreceive = (data) => this._processIncomingData(data);
this.connection.onclose = (error) => this._connectionClosed(error);
this._callbacks = {};
this._methods = {};
this._closedCallbacks = [];
this._reconnectingCallbacks = [];
this._reconnectedCallbacks = [];
this._invocationId = 0;
this._receivedHandshakeResponse = false;
this._connectionState = HubConnectionState.Disconnected;
this._connectionStarted = false;
this._cachedPingMessage = this._protocol.writeMessage({ type: MessageType.Ping });
}
/** @internal */
// Using a public static factory method means we can have a private constructor and an _internal_
// create method that can be used by HubConnectionBuilder. An "internal" constructor would just
// be stripped away and the '.d.ts' file would have no constructor, which is interpreted as a
// public parameter-less constructor.
static create(connection, logger, protocol, reconnectPolicy) {
return new HubConnection(connection, logger, protocol, reconnectPolicy);
}
/** Indicates the state of the {@link HubConnection} to the server. */
get state() {
return this._connectionState;
}
/** Represents the connection id of the {@link HubConnection} on the server. The connection id will be null when the connection is either
* in the disconnected state or if the negotiation step was skipped.
*/
get connectionId() {
return this.connection ? (this.connection.connectionId || null) : null;
}
/** Indicates the url of the {@link HubConnection} to the server. */
get baseUrl() {
return this.connection.baseUrl || "";
}
/**
* Sets a new url for the HubConnection. Note that the url can only be changed when the connection is in either the Disconnected or
* Reconnecting states.
* @param {string} url The url to connect to.
*/
set baseUrl(url) {
if (this._connectionState !== HubConnectionState.Disconnected && this._connectionState !== HubConnectionState.Reconnecting) {
throw new Error("The HubConnection must be in the Disconnected or Reconnecting state to change the url.");
}
if (!url) {
throw new Error("The HubConnection url must be a valid url.");
}
this.connection.baseUrl = url;
}
/** Starts the connection.
*
* @returns {Promise<void>} A Promise that resolves when the connection has been successfully established, or rejects with an error.
*/
start() {
this._startPromise = this._startWithStateTransitions();
return this._startPromise;
}
async _startWithStateTransitions() {
if (this._connectionState !== HubConnectionState.Disconnected) {
return Promise.reject(new Error("Cannot start a HubConnection that is not in the 'Disconnected' state."));
}
this._connectionState = HubConnectionState.Connecting;
this._logger.log(LogLevel.Debug, "Starting HubConnection.");
try {
await this._startInternal();
if (Platform.isBrowser) {
// Log when the browser freezes the tab so users know why their connection unexpectedly stopped working
window.document.addEventListener("freeze", this._freezeEventListener);
}
this._connectionState = HubConnectionState.Connected;
this._connectionStarted = true;
this._logger.log(LogLevel.Debug, "HubConnection connected successfully.");
}
catch (e) {
this._connectionState = HubConnectionState.Disconnected;
this._logger.log(LogLevel.Debug, `HubConnection failed to start successfully because of error '${e}'.`);
return Promise.reject(e);
}
}
async _startInternal() {
this._stopDuringStartError = undefined;
this._receivedHandshakeResponse = false;
// Set up the promise before any connection is (re)started otherwise it could race with received messages
const handshakePromise = new Promise((resolve, reject) => {
this._handshakeResolver = resolve;
this._handshakeRejecter = reject;
});
await this.connection.start(this._protocol.transferFormat);
try {
const handshakeRequest = {
protocol: this._protocol.name,
version: this._protocol.version,
};
this._logger.log(LogLevel.Debug, "Sending handshake request.");
await this._sendMessage(this._handshakeProtocol.writeHandshakeRequest(handshakeRequest));
this._logger.log(LogLevel.Information, `Using HubProtocol '${this._protocol.name}'.`);
// defensively cleanup timeout in case we receive a message from the server before we finish start
this._cleanupTimeout();
this._resetTimeoutPeriod();
this._resetKeepAliveInterval();
await handshakePromise;
// It's important to check the stopDuringStartError instead of just relying on the handshakePromise
// being rejected on close, because this continuation can run after both the handshake completed successfully
// and the connection was closed.
if (this._stopDuringStartError) {
// It's important to throw instead of returning a rejected promise, because we don't want to allow any state
// transitions to occur between now and the calling code observing the exceptions. Returning a rejected promise
// will cause the calling continuation to get scheduled to run later.
// eslint-disable-next-line @typescript-eslint/no-throw-literal
throw this._stopDuringStartError;
}
if (!this.connection.features.inherentKeepAlive) {
await this._sendMessage(this._cachedPingMessage);
}
}
catch (e) {
this._logger.log(LogLevel.Debug, `Hub handshake failed with error '${e}' during start(). Stopping HubConnection.`);
this._cleanupTimeout();
this._cleanupPingTimer();
// HttpConnection.stop() should not complete until after the onclose callback is invoked.
// This will transition the HubConnection to the disconnected state before HttpConnection.stop() completes.
await this.connection.stop(e);
throw e;
}
}
/** Stops the connection.
*
* @returns {Promise<void>} A Promise that resolves when the connection has been successfully terminated, or rejects with an error.
*/
async stop() {
// Capture the start promise before the connection might be restarted in an onclose callback.
const startPromise = this._startPromise;
this._stopPromise = this._stopInternal();
await this._stopPromise;
try {
// Awaiting undefined continues immediately
await startPromise;
}
catch (e) {
// This exception is returned to the user as a rejected Promise from the start method.
}
}
_stopInternal(error) {
if (this._connectionState === HubConnectionState.Disconnected) {
this._logger.log(LogLevel.Debug, `Call to HubConnection.stop(${error}) ignored because it is already in the disconnected state.`);
return Promise.resolve();
}
if (this._connectionState === HubConnectionState.Disconnecting) {
this._logger.log(LogLevel.Debug, `Call to HttpConnection.stop(${error}) ignored because the connection is already in the disconnecting state.`);
return this._stopPromise;
}
this._connectionState = HubConnectionState.Disconnecting;
this._logger.log(LogLevel.Debug, "Stopping HubConnection.");
if (this._reconnectDelayHandle) {
// We're in a reconnect delay which means the underlying connection is currently already stopped.
// Just clear the handle to stop the reconnect loop (which no one is waiting on thankfully) and
// fire the onclose callbacks.
this._logger.log(LogLevel.Debug, "Connection stopped during reconnect delay. Done reconnecting.");
clearTimeout(this._reconnectDelayHandle);
this._reconnectDelayHandle = undefined;
this._completeClose();
return Promise.resolve();
}
this._cleanupTimeout();
this._cleanupPingTimer();
this._stopDuringStartError = error || new AbortError("The connection was stopped before the hub handshake could complete.");
// HttpConnection.stop() should not complete until after either HttpConnection.start() fails
// or the onclose callback is invoked. The onclose callback will transition the HubConnection
// to the disconnected state if need be before HttpConnection.stop() completes.
return this.connection.stop(error);
}
/** Invokes a streaming hub method on the server using the specified name and arguments.
*
* @typeparam T The type of the items returned by the server.
* @param {string} methodName The name of the server method to invoke.
* @param {any[]} args The arguments used to invoke the server method.
* @returns {IStreamResult<T>} An object that yields results from the server as they are received.
*/
stream(methodName, ...args) {
const [streams, streamIds] = this._replaceStreamingParams(args);
const invocationDescriptor = this._createStreamInvocation(methodName, args, streamIds);
// eslint-disable-next-line prefer-const
let promiseQueue;
const subject = new Subject();
subject.cancelCallback = () => {
const cancelInvocation = this._createCancelInvocation(invocationDescriptor.invocationId);
delete this._callbacks[invocationDescriptor.invocationId];
return promiseQueue.then(() => {
return this._sendWithProtocol(cancelInvocation);
});
};
this._callbacks[invocationDescriptor.invocationId] = (invocationEvent, error) => {
if (error) {
subject.error(error);
return;
}
else if (invocationEvent) {
// invocationEvent will not be null when an error is not passed to the callback
if (invocationEvent.type === MessageType.Completion) {
if (invocationEvent.error) {
subject.error(new Error(invocationEvent.error));
}
else {
subject.complete();
}
}
else {
subject.next((invocationEvent.item));
}
}
};
promiseQueue = this._sendWithProtocol(invocationDescriptor)
.catch((e) => {
subject.error(e);
delete this._callbacks[invocationDescriptor.invocationId];
});
this._launchStreams(streams, promiseQueue);
return subject;
}
_sendMessage(message) {
this._resetKeepAliveInterval();
return this.connection.send(message);
}
/**
* Sends a js object to the server.
* @param message The js object to serialize and send.
*/
_sendWithProtocol(message) {
return this._sendMessage(this._protocol.writeMessage(message));
}
/** Invokes a hub method on the server using the specified name and arguments. Does not wait for a response from the receiver.
*
* The Promise returned by this method resolves when the client has sent the invocation to the server. The server may still
* be processing the invocation.
*
* @param {string} methodName The name of the server method to invoke.
* @param {any[]} args The arguments used to invoke the server method.
* @returns {Promise<void>} A Promise that resolves when the invocation has been successfully sent, or rejects with an error.
*/
send(methodName, ...args) {
const [streams, streamIds] = this._replaceStreamingParams(args);
const sendPromise = this._sendWithProtocol(this._createInvocation(methodName, args, true, streamIds));
this._launchStreams(streams, sendPromise);
return sendPromise;
}
/** Invokes a hub method on the server using the specified name and arguments.
*
* The Promise returned by this method resolves when the server indicates it has finished invoking the method. When the promise
* resolves, the server has finished invoking the method. If the server method returns a result, it is produced as the result of
* resolving the Promise.
*
* @typeparam T The expected return type.
* @param {string} methodName The name of the server method to invoke.
* @param {any[]} args The arguments used to invoke the server method.
* @returns {Promise<T>} A Promise that resolves with the result of the server method (if any), or rejects with an error.
*/
invoke(methodName, ...args) {
const [streams, streamIds] = this._replaceStreamingParams(args);
const invocationDescriptor = this._createInvocation(methodName, args, false, streamIds);
const p = new Promise((resolve, reject) => {
// invocationId will always have a value for a non-blocking invocation
this._callbacks[invocationDescriptor.invocationId] = (invocationEvent, error) => {
if (error) {
reject(error);
return;
}
else if (invocationEvent) {
// invocationEvent will not be null when an error is not passed to the callback
if (invocationEvent.type === MessageType.Completion) {
if (invocationEvent.error) {
reject(new Error(invocationEvent.error));
}
else {
resolve(invocationEvent.result);
}
}
else {
reject(new Error(`Unexpected message type: ${invocationEvent.type}`));
}
}
};
const promiseQueue = this._sendWithProtocol(invocationDescriptor)
.catch((e) => {
reject(e);
// invocationId will always have a value for a non-blocking invocation
delete this._callbacks[invocationDescriptor.invocationId];
});
this._launchStreams(streams, promiseQueue);
});
return p;
}
on(methodName, newMethod) {
if (!methodName || !newMethod) {
return;
}
methodName = methodName.toLowerCase();
if (!this._methods[methodName]) {
this._methods[methodName] = [];
}
// Preventing adding the same handler multiple times.
if (this._methods[methodName].indexOf(newMethod) !== -1) {
return;
}
this._methods[methodName].push(newMethod);
}
off(methodName, method) {
if (!methodName) {
return;
}
methodName = methodName.toLowerCase();
const handlers = this._methods[methodName];
if (!handlers) {
return;
}
if (method) {
const removeIdx = handlers.indexOf(method);
if (removeIdx !== -1) {
handlers.splice(removeIdx, 1);
if (handlers.length === 0) {
delete this._methods[methodName];
}
}
}
else {
delete this._methods[methodName];
}
}
/** Registers a handler that will be invoked when the connection is closed.
*
* @param {Function} callback The handler that will be invoked when the connection is closed. Optionally receives a single argument containing the error that caused the connection to close (if any).
*/
onclose(callback) {
if (callback) {
this._closedCallbacks.push(callback);
}
}
/** Registers a handler that will be invoked when the connection starts reconnecting.
*
* @param {Function} callback The handler that will be invoked when the connection starts reconnecting. Optionally receives a single argument containing the error that caused the connection to start reconnecting (if any).
*/
onreconnecting(callback) {
if (callback) {
this._reconnectingCallbacks.push(callback);
}
}
/** Registers a handler that will be invoked when the connection successfully reconnects.
*
* @param {Function} callback The handler that will be invoked when the connection successfully reconnects.
*/
onreconnected(callback) {
if (callback) {
this._reconnectedCallbacks.push(callback);
}
}
_processIncomingData(data) {
this._cleanupTimeout();
if (!this._receivedHandshakeResponse) {
data = this._processHandshakeResponse(data);
this._receivedHandshakeResponse = true;
}
// Data may have all been read when processing handshake response
if (data) {
// Parse the messages
const messages = this._protocol.parseMessages(data, this._logger);
for (const message of messages) {
switch (message.type) {
case MessageType.Invocation:
// eslint-disable-next-line @typescript-eslint/no-floating-promises
this._invokeClientMethod(message);
break;
case MessageType.StreamItem:
case MessageType.Completion: {
const callback = this._callbacks[message.invocationId];
if (callback) {
if (message.type === MessageType.Completion) {
delete this._callbacks[message.invocationId];
}
try {
callback(message);
}
catch (e) {
this._logger.log(LogLevel.Error, `Stream callback threw error: ${getErrorString(e)}`);
}
}
break;
}
case MessageType.Ping:
// Don't care about pings
break;
case MessageType.Close: {
this._logger.log(LogLevel.Information, "Close message received from server.");
const error = message.error ? new Error("Server returned an error on close: " + message.error) : undefined;
if (message.allowReconnect === true) {
// It feels wrong not to await connection.stop() here, but processIncomingData is called as part of an onreceive callback which is not async,
// this is already the behavior for serverTimeout(), and HttpConnection.Stop() should catch and log all possible exceptions.
// eslint-disable-next-line @typescript-eslint/no-floating-promises
this.connection.stop(error);
}
else {
// We cannot await stopInternal() here, but subsequent calls to stop() will await this if stopInternal() is still ongoing.
this._stopPromise = this._stopInternal(error);
}
break;
}
default:
this._logger.log(LogLevel.Warning, `Invalid message type: ${message.type}.`);
break;
}
}
}
this._resetTimeoutPeriod();
}
_processHandshakeResponse(data) {
let responseMessage;
let remainingData;
try {
[remainingData, responseMessage] = this._handshakeProtocol.parseHandshakeResponse(data);
}
catch (e) {
const message = "Error parsing handshake response: " + e;
this._logger.log(LogLevel.Error, message);
const error = new Error(message);
this._handshakeRejecter(error);
throw error;
}
if (responseMessage.error) {
const message = "Server returned handshake error: " + responseMessage.error;
this._logger.log(LogLevel.Error, message);
const error = new Error(message);
this._handshakeRejecter(error);
throw error;
}
else {
this._logger.log(LogLevel.Debug, "Server handshake complete.");
}
this._handshakeResolver();
return remainingData;
}
_resetKeepAliveInterval() {
if (this.connection.features.inherentKeepAlive) {
return;
}
// Set the time we want the next keep alive to be sent
// Timer will be setup on next message receive
this._nextKeepAlive = new Date().getTime() + this.keepAliveIntervalInMilliseconds;
this._cleanupPingTimer();
}
_resetTimeoutPeriod() {
if (!this.connection.features || !this.connection.features.inherentKeepAlive) {
// Set the timeout timer
this._timeoutHandle = setTimeout(() => this.serverTimeout(), this.serverTimeoutInMilliseconds);
// Set keepAlive timer if there isn't one
if (this._pingServerHandle === undefined) {
let nextPing = this._nextKeepAlive - new Date().getTime();
if (nextPing < 0) {
nextPing = 0;
}
// The timer needs to be set from a networking callback to avoid Chrome timer throttling from causing timers to run once a minute
this._pingServerHandle = setTimeout(async () => {
if (this._connectionState === HubConnectionState.Connected) {
try {
await this._sendMessage(this._cachedPingMessage);
}
catch {
// We don't care about the error. It should be seen elsewhere in the client.
// The connection is probably in a bad or closed state now, cleanup the timer so it stops triggering
this._cleanupPingTimer();
}
}
}, nextPing);
}
}
}
// eslint-disable-next-line @typescript-eslint/naming-convention
serverTimeout() {
// The server hasn't talked to us in a while. It doesn't like us anymore ... :(
// Terminate the connection, but we don't need to wait on the promise. This could trigger reconnecting.
// eslint-disable-next-line @typescript-eslint/no-floating-promises
this.connection.stop(new Error("Server timeout elapsed without receiving a message from the server."));
}
async _invokeClientMethod(invocationMessage) {
const methodName = invocationMessage.target.toLowerCase();
const methods = this._methods[methodName];
if (!methods) {
this._logger.log(LogLevel.Warning, `No client method with the name '${methodName}' found.`);
// No handlers provided by client but the server is expecting a response still, so we send an error
if (invocationMessage.invocationId) {
this._logger.log(LogLevel.Warning, `No result given for '${methodName}' method and invocation ID '${invocationMessage.invocationId}'.`);
await this._sendWithProtocol(this._createCompletionMessage(invocationMessage.invocationId, "Client didn't provide a result.", null));
}
return;
}
// Avoid issues with handlers removing themselves thus modifying the list while iterating through it
const methodsCopy = methods.slice();
// Server expects a response
const expectsResponse = invocationMessage.invocationId ? true : false;
// We preserve the last result or exception but still call all handlers
let res;
let exception;
let completionMessage;
for (const m of methodsCopy) {
try {
const prevRes = res;
res = await m.apply(this, invocationMessage.arguments);
if (expectsResponse && res && prevRes) {
this._logger.log(LogLevel.Error, `Multiple results provided for '${methodName}'. Sending error to server.`);
completionMessage = this._createCompletionMessage(invocationMessage.invocationId, `Client provided multiple results.`, null);
}
// Ignore exception if we got a result after, the exception will be logged
exception = undefined;
}
catch (e) {
exception = e;
this._logger.log(LogLevel.Error, `A callback for the method '${methodName}' threw error '${e}'.`);
}
}
if (completionMessage) {
await this._sendWithProtocol(completionMessage);
}
else if (expectsResponse) {
// If there is an exception that means either no result was given or a handler after a result threw
if (exception) {
completionMessage = this._createCompletionMessage(invocationMessage.invocationId, `${exception}`, null);
}
else if (res !== undefined) {
completionMessage = this._createCompletionMessage(invocationMessage.invocationId, null, res);
}
else {
this._logger.log(LogLevel.Warning, `No result given for '${methodName}' method and invocation ID '${invocationMessage.invocationId}'.`);
// Client didn't provide a result or throw from a handler, server expects a response so we send an error
completionMessage = this._createCompletionMessage(invocationMessage.invocationId, "Client didn't provide a result.", null);
}
await this._sendWithProtocol(completionMessage);
}
else {
if (res) {
this._logger.log(LogLevel.Error, `Result given for '${methodName}' method but server is not expecting a result.`);
}
}
}
_connectionClosed(error) {
this._logger.log(LogLevel.Debug, `HubConnection.connectionClosed(${error}) called while in state ${this._connectionState}.`);
// Triggering this.handshakeRejecter is insufficient because it could already be resolved without the continuation having run yet.
this._stopDuringStartError = this._stopDuringStartError || error || new AbortError("The underlying connection was closed before the hub handshake could complete.");
// If the handshake is in progress, start will be waiting for the handshake promise, so we complete it.
// If it has already completed, this should just noop.
if (this._handshakeResolver) {
this._handshakeResolver();
}
this._cancelCallbacksWithError(error || new Error("Invocation canceled due to the underlying connection being closed."));
this._cleanupTimeout();
this._cleanupPingTimer();
if (this._connectionState === HubConnectionState.Disconnecting) {
this._completeClose(error);
}
else if (this._connectionState === HubConnectionState.Connected && this._reconnectPolicy) {
// eslint-disable-next-line @typescript-eslint/no-floating-promises
this._reconnect(error);
}
else if (this._connectionState === HubConnectionState.Connected) {
this._completeClose(error);
}
// If none of the above if conditions were true were called the HubConnection must be in either:
// 1. The Connecting state in which case the handshakeResolver will complete it and stopDuringStartError will fail it.
// 2. The Reconnecting state in which case the handshakeResolver will complete it and stopDuringStartError will fail the current reconnect attempt
// and potentially continue the reconnect() loop.
// 3. The Disconnected state in which case we're already done.
}
_completeClose(error) {
if (this._connectionStarted) {
this._connectionState = HubConnectionState.Disconnected;
this._connectionStarted = false;
if (Platform.isBrowser) {
window.document.removeEventListener("freeze", this._freezeEventListener);
}
try {
this._closedCallbacks.forEach((c) => c.apply(this, [error]));
}
catch (e) {
this._logger.log(LogLevel.Error, `An onclose callback called with error '${error}' threw error '${e}'.`);
}
}
}
async _reconnect(error) {
const reconnectStartTime = Date.now();
let previousReconnectAttempts = 0;
let retryError = error !== undefined ? error : new Error("Attempting to reconnect due to a unknown error.");
let nextRetryDelay = this._getNextRetryDelay(previousReconnectAttempts++, 0, retryError);
if (nextRetryDelay === null) {
this._logger.log(LogLevel.Debug, "Connection not reconnecting because the IRetryPolicy returned null on the first reconnect attempt.");
this._completeClose(error);
return;
}
this._connectionState = HubConnectionState.Reconnecting;
if (error) {
this._logger.log(LogLevel.Information, `Connection reconnecting because of error '${error}'.`);
}
else {
this._logger.log(LogLevel.Information, "Connection reconnecting.");
}
if (this._reconnectingCallbacks.length !== 0) {
try {
this._reconnectingCallbacks.forEach((c) => c.apply(this, [error]));
}
catch (e) {
this._logger.log(LogLevel.Error, `An onreconnecting callback called with error '${error}' threw error '${e}'.`);
}
// Exit early if an onreconnecting callback called connection.stop().
if (this._connectionState !== HubConnectionState.Reconnecting) {
this._logger.log(LogLevel.Debug, "Connection left the reconnecting state in onreconnecting callback. Done reconnecting.");
return;
}
}
while (nextRetryDelay !== null) {
this._logger.log(LogLevel.Information, `Reconnect attempt number ${previousReconnectAttempts} will start in ${nextRetryDelay} ms.`);
await new Promise((resolve) => {
this._reconnectDelayHandle = setTimeout(resolve, nextRetryDelay);
});
this._reconnectDelayHandle = undefined;
if (this._connectionState !== HubConnectionState.Reconnecting) {
this._logger.log(LogLevel.Debug, "Connection left the reconnecting state during reconnect delay. Done reconnecting.");
return;
}
try {
await this._startInternal();
this._connectionState = HubConnectionState.Connected;
this._logger.log(LogLevel.Information, "HubConnection reconnected successfully.");
if (this._reconnectedCallbacks.length !== 0) {
try {
this._reconnectedCallbacks.forEach((c) => c.apply(this, [this.connection.connectionId]));
}
catch (e) {
this._logger.log(LogLevel.Error, `An onreconnected callback called with connectionId '${this.connection.connectionId}; threw error '${e}'.`);
}
}
return;
}
catch (e) {
this._logger.log(LogLevel.Information, `Reconnect attempt failed because of error '${e}'.`);
if (this._connectionState !== HubConnectionState.Reconnecting) {
this._logger.log(LogLevel.Debug, `Connection moved to the '${this._connectionState}' from the reconnecting state during reconnect attempt. Done reconnecting.`);
// The TypeScript compiler thinks that connectionState must be Connected here. The TypeScript compiler is wrong.
if (this._connectionState === HubConnectionState.Disconnecting) {
this._completeClose();
}
return;
}
retryError = e instanceof Error ? e : new Error(e.toString());
nextRetryDelay = this._getNextRetryDelay(previousReconnectAttempts++, Date.now() - reconnectStartTime, retryError);
}
}
this._logger.log(LogLevel.Information, `Reconnect retries have been exhausted after ${Date.now() - reconnectStartTime} ms and ${previousReconnectAttempts} failed attempts. Connection disconnecting.`);
this._completeClose();
}
_getNextRetryDelay(previousRetryCount, elapsedMilliseconds, retryReason) {
try {
return this._reconnectPolicy.nextRetryDelayInMilliseconds({
elapsedMilliseconds,
previousRetryCount,
retryReason,
});
}
catch (e) {
this._logger.log(LogLevel.Error, `IRetryPolicy.nextRetryDelayInMilliseconds(${previousRetryCount}, ${elapsedMilliseconds}) threw error '${e}'.`);
return null;
}
}
_cancelCallbacksWithError(error) {
const callbacks = this._callbacks;
this._callbacks = {};
Object.keys(callbacks)
.forEach((key) => {
const callback = callbacks[key];
try {
callback(null, error);
}
catch (e) {
this._logger.log(LogLevel.Error, `Stream 'error' callback called with '${error}' threw error: ${getErrorString(e)}`);
}
});
}
_cleanupPingTimer() {
if (this._pingServerHandle) {
clearTimeout(this._pingServerHandle);
this._pingServerHandle = undefined;
}
}
_cleanupTimeout() {
if (this._timeoutHandle) {
clearTimeout(this._timeoutHandle);
}
}
_createInvocation(methodName, args, nonblocking, streamIds) {
if (nonblocking) {
if (streamIds.length !== 0) {
return {
arguments: args,
streamIds,
target: methodName,
type: MessageType.Invocation,
};
}
else {
return {
arguments: args,
target: methodName,
type: MessageType.Invocation,
};
}
}
else {
const invocationId = this._invocationId;
this._invocationId++;
if (streamIds.length !== 0) {
return {
arguments: args,
invocationId: invocationId.toString(),
streamIds,
target: methodName,
type: MessageType.Invocation,
};
}
else {
return {
arguments: args,
invocationId: invocationId.toString(),
target: methodName,
type: MessageType.Invocation,
};
}
}
}
_launchStreams(streams, promiseQueue) {
if (streams.length === 0) {
return;
}
// Synchronize stream data so they arrive in-order on the server
if (!promiseQueue) {
promiseQueue = Promise.resolve();
}
// We want to iterate over the keys, since the keys are the stream ids
// eslint-disable-next-line guard-for-in
for (const streamId in streams) {
streams[streamId].subscribe({
complete: () => {
promiseQueue = promiseQueue.then(() => this._sendWithProtocol(this._createCompletionMessage(streamId)));
},
error: (err) => {
let message;
if (err instanceof Error) {
message = err.message;
}
else if (err && err.toString) {
message = err.toString();
}
else {
message = "Unknown error";
}
promiseQueue = promiseQueue.then(() => this._sendWithProtocol(this._createCompletionMessage(streamId, message)));
},
next: (item) => {
promiseQueue = promiseQueue.then(() => this._sendWithProtocol(this._createStreamItemMessage(streamId, item)));
},
});
}
}
_replaceStreamingParams(args) {
const streams = [];
const streamIds = [];
for (let i = 0; i < args.length; i++) {
const argument = args[i];
if (this._isObservable(argument)) {
const streamId = this._invocationId;
this._invocationId++;
// Store the stream for later use
streams[streamId] = argument;
streamIds.push(streamId.toString());
// remove stream from args
args.splice(i, 1);
}
}
return [streams, streamIds];
}
_isObservable(arg) {
// This allows other stream implementations to just work (like rxjs)
return arg && arg.subscribe && typeof arg.subscribe === "function";
}
_createStreamInvocation(methodName, args, streamIds) {
const invocationId = this._invocationId;
this._invocationId++;
if (streamIds.length !== 0) {
return {
arguments: args,
invocationId: invocationId.toString(),
streamIds,
target: methodName,
type: MessageType.StreamInvocation,
};
}
else {
return {
arguments: args,
invocationId: invocationId.toString(),
target: methodName,
type: MessageType.StreamInvocation,
};
}
}
_createCancelInvocation(id) {
return {
invocationId: id,
type: MessageType.CancelInvocation,
};
}
_createStreamItemMessage(id, item) {
return {
invocationId: id,
item,
type: MessageType.StreamItem,
};
}
_createCompletionMessage(id, error, result) {
if (error) {
return {
error,
invocationId: id,
type: MessageType.Completion,
};
}
return {
invocationId: id,
result,
type: MessageType.Completion,
};
}
}
;// CONCATENATED MODULE: ./src/DefaultReconnectPolicy.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// 0, 2, 10, 30 second delays before reconnect attempts.
const DEFAULT_RETRY_DELAYS_IN_MILLISECONDS = [0, 2000, 10000, 30000, null];
/** @private */
class DefaultReconnectPolicy {
constructor(retryDelays) {
this._retryDelays = retryDelays !== undefined ? [...retryDelays, null] : DEFAULT_RETRY_DELAYS_IN_MILLISECONDS;
}
nextRetryDelayInMilliseconds(retryContext) {
return this._retryDelays[retryContext.previousRetryCount];
}
}
;// CONCATENATED MODULE: ./src/HeaderNames.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
class HeaderNames {
}
HeaderNames.Authorization = "Authorization";
HeaderNames.Cookie = "Cookie";
;// CONCATENATED MODULE: ./src/AccessTokenHttpClient.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
/** @private */
class AccessTokenHttpClient extends HttpClient {
constructor(innerClient, accessTokenFactory) {
super();
this._innerClient = innerClient;
this._accessTokenFactory = accessTokenFactory;
}
async send(request) {
let allowRetry = true;
if (this._accessTokenFactory && (!this._accessToken || (request.url && request.url.indexOf("/negotiate?") > 0))) {
// don't retry if the request is a negotiate or if we just got a potentially new token from the access token factory
allowRetry = false;
this._accessToken = await this._accessTokenFactory();
}
this._setAuthorizationHeader(request);
const response = await this._innerClient.send(request);
if (allowRetry && response.statusCode === 401 && this._accessTokenFactory) {
this._accessToken = await this._accessTokenFactory();
this._setAuthorizationHeader(request);
return await this._innerClient.send(request);
}
return response;
}
_setAuthorizationHeader(request) {
if (!request.headers) {
request.headers = {};
}
if (this._accessToken) {
request.headers[HeaderNames.Authorization] = `Bearer ${this._accessToken}`;
}
// don't remove the header if there isn't an access token factory, the user manually added the header in this case
else if (this._accessTokenFactory) {
if (request.headers[HeaderNames.Authorization]) {
delete request.headers[HeaderNames.Authorization];
}
}
}
getCookieString(url) {
return this._innerClient.getCookieString(url);
}
}
;// CONCATENATED MODULE: ./src/ITransport.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// This will be treated as a bit flag in the future, so we keep it using power-of-two values.
/** Specifies a specific HTTP transport type. */
var HttpTransportType;
(function (HttpTransportType) {
/** Specifies no transport preference. */
HttpTransportType[HttpTransportType["None"] = 0] = "None";
/** Specifies the WebSockets transport. */
HttpTransportType[HttpTransportType["WebSockets"] = 1] = "WebSockets";
/** Specifies the Server-Sent Events transport. */
HttpTransportType[HttpTransportType["ServerSentEvents"] = 2] = "ServerSentEvents";
/** Specifies the Long Polling transport. */
HttpTransportType[HttpTransportType["LongPolling"] = 4] = "LongPolling";
})(HttpTransportType || (HttpTransportType = {}));
/** Specifies the transfer format for a connection. */
var TransferFormat;
(function (TransferFormat) {
/** Specifies that only text data will be transmitted over the connection. */
TransferFormat[TransferFormat["Text"] = 1] = "Text";
/** Specifies that binary data will be transmitted over the connection. */
TransferFormat[TransferFormat["Binary"] = 2] = "Binary";
})(TransferFormat || (TransferFormat = {}));
;// CONCATENATED MODULE: ./src/AbortController.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// Rough polyfill of https://developer.mozilla.org/en-US/docs/Web/API/AbortController
// We don't actually ever use the API being polyfilled, we always use the polyfill because
// it's a very new API right now.
// Not exported from index.
/** @private */
class AbortController_AbortController {
constructor() {
this._isAborted = false;
this.onabort = null;
}
abort() {
if (!this._isAborted) {
this._isAborted = true;
if (this.onabort) {
this.onabort();
}
}
}
get signal() {
return this;
}
get aborted() {
return this._isAborted;
}
}
;// CONCATENATED MODULE: ./src/LongPollingTransport.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// Not exported from 'index', this type is internal.
/** @private */
class LongPollingTransport {
constructor(httpClient, logger, options) {
this._httpClient = httpClient;
this._logger = logger;
this._pollAbort = new AbortController_AbortController();
this._options = options;
this._running = false;
this.onreceive = null;
this.onclose = null;
}
// This is an internal type, not exported from 'index' so this is really just internal.
get pollAborted() {
return this._pollAbort.aborted;
}
async connect(url, transferFormat) {
Arg.isRequired(url, "url");
Arg.isRequired(transferFormat, "transferFormat");
Arg.isIn(transferFormat, TransferFormat, "transferFormat");
this._url = url;
this._logger.log(LogLevel.Trace, "(LongPolling transport) Connecting.");
// Allow binary format on Node and Browsers that support binary content (indicated by the presence of responseType property)
if (transferFormat === TransferFormat.Binary &&
(typeof XMLHttpRequest !== "undefined" && typeof new XMLHttpRequest().responseType !== "string")) {
throw new Error("Binary protocols over XmlHttpRequest not implementing advanced features are not supported.");
}
const [name, value] = getUserAgentHeader();
const headers = { [name]: value, ...this._options.headers };
const pollOptions = {
abortSignal: this._pollAbort.signal,
headers,
timeout: 100000,
withCredentials: this._options.withCredentials,
};
if (transferFormat === TransferFormat.Binary) {
pollOptions.responseType = "arraybuffer";
}
// Make initial long polling request
// Server uses first long polling request to finish initializing connection and it returns without data
const pollUrl = `${url}&_=${Date.now()}`;
this._logger.log(LogLevel.Trace, `(LongPolling transport) polling: ${pollUrl}.`);
const response = await this._httpClient.get(pollUrl, pollOptions);
if (response.statusCode !== 200) {
this._logger.log(LogLevel.Error, `(LongPolling transport) Unexpected response code: ${response.statusCode}.`);
// Mark running as false so that the poll immediately ends and runs the close logic
this._closeError = new HttpError(response.statusText || "", response.statusCode);
this._running = false;
}
else {
this._running = true;
}
this._receiving = this._poll(this._url, pollOptions);
}
async _poll(url, pollOptions) {
try {
while (this._running) {
try {
const pollUrl = `${url}&_=${Date.now()}`;
this._logger.log(LogLevel.Trace, `(LongPolling transport) polling: ${pollUrl}.`);
const response = await this._httpClient.get(pollUrl, pollOptions);
if (response.statusCode === 204) {
this._logger.log(LogLevel.Information, "(LongPolling transport) Poll terminated by server.");
this._running = false;
}
else if (response.statusCode !== 200) {
this._logger.log(LogLevel.Error, `(LongPolling transport) Unexpected response code: ${response.statusCode}.`);
// Unexpected status code
this._closeError = new HttpError(response.statusText || "", response.statusCode);
this._running = false;
}
else {
// Process the response
if (response.content) {
this._logger.log(LogLevel.Trace, `(LongPolling transport) data received. ${getDataDetail(response.content, this._options.logMessageContent)}.`);
if (this.onreceive) {
this.onreceive(response.content);
}
}
else {
// This is another way timeout manifest.
this._logger.log(LogLevel.Trace, "(LongPolling transport) Poll timed out, reissuing.");
}
}
}
catch (e) {
if (!this._running) {
// Log but disregard errors that occur after stopping
this._logger.log(LogLevel.Trace, `(LongPolling transport) Poll errored after shutdown: ${e.message}`);
}
else {
if (e instanceof TimeoutError) {
// Ignore timeouts and reissue the poll.
this._logger.log(LogLevel.Trace, "(LongPolling transport) Poll timed out, reissuing.");
}
else {
// Close the connection with the error as the result.
this._closeError = e;
this._running = false;
}
}
}
}
}
finally {
this._logger.log(LogLevel.Trace, "(LongPolling transport) Polling complete.");
// We will reach here with pollAborted==false when the server returned a response causing the transport to stop.
// If pollAborted==true then client initiated the stop and the stop method will raise the close event after DELETE is sent.
if (!this.pollAborted) {
this._raiseOnClose();
}
}
}
async send(data) {
if (!this._running) {
return Promise.reject(new Error("Cannot send until the transport is connected"));
}
return sendMessage(this._logger, "LongPolling", this._httpClient, this._url, data, this._options);
}
async stop() {
this._logger.log(LogLevel.Trace, "(LongPolling transport) Stopping polling.");
// Tell receiving loop to stop, abort any current request, and then wait for it to finish
this._running = false;
this._pollAbort.abort();
try {
await this._receiving;
// Send DELETE to clean up long polling on the server
this._logger.log(LogLevel.Trace, `(LongPolling transport) sending DELETE request to ${this._url}.`);
const headers = {};
const [name, value] = getUserAgentHeader();
headers[name] = value;
const deleteOptions = {
headers: { ...headers, ...this._options.headers },
timeout: this._options.timeout,
withCredentials: this._options.withCredentials,
};
await this._httpClient.delete(this._url, deleteOptions);
this._logger.log(LogLevel.Trace, "(LongPolling transport) DELETE request sent.");
}
finally {
this._logger.log(LogLevel.Trace, "(LongPolling transport) Stop finished.");
// Raise close event here instead of in polling
// It needs to happen after the DELETE request is sent
this._raiseOnClose();
}
}
_raiseOnClose() {
if (this.onclose) {
let logMessage = "(LongPolling transport) Firing onclose event.";
if (this._closeError) {
logMessage += " Error: " + this._closeError;
}
this._logger.log(LogLevel.Trace, logMessage);
this.onclose(this._closeError);
}
}
}
;// CONCATENATED MODULE: ./src/ServerSentEventsTransport.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
/** @private */
class ServerSentEventsTransport {
constructor(httpClient, accessToken, logger, options) {
this._httpClient = httpClient;
this._accessToken = accessToken;
this._logger = logger;
this._options = options;
this.onreceive = null;
this.onclose = null;
}
async connect(url, transferFormat) {
Arg.isRequired(url, "url");
Arg.isRequired(transferFormat, "transferFormat");
Arg.isIn(transferFormat, TransferFormat, "transferFormat");
this._logger.log(LogLevel.Trace, "(SSE transport) Connecting.");
// set url before accessTokenFactory because this._url is only for send and we set the auth header instead of the query string for send
this._url = url;
if (this._accessToken) {
url += (url.indexOf("?") < 0 ? "?" : "&") + `access_token=${encodeURIComponent(this._accessToken)}`;
}
return new Promise((resolve, reject) => {
let opened = false;
if (transferFormat !== TransferFormat.Text) {
reject(new Error("The Server-Sent Events transport only supports the 'Text' transfer format"));
return;
}
let eventSource;
if (Platform.isBrowser || Platform.isWebWorker) {
eventSource = new this._options.EventSource(url, { withCredentials: this._options.withCredentials });
}
else {
// Non-browser passes cookies via the dictionary
const cookies = this._httpClient.getCookieString(url);
const headers = {};
headers.Cookie = cookies;
const [name, value] = getUserAgentHeader();
headers[name] = value;
eventSource = new this._options.EventSource(url, { withCredentials: this._options.withCredentials, headers: { ...headers, ...this._options.headers } });
}
try {
eventSource.onmessage = (e) => {
if (this.onreceive) {
try {
this._logger.log(LogLevel.Trace, `(SSE transport) data received. ${getDataDetail(e.data, this._options.logMessageContent)}.`);
this.onreceive(e.data);
}
catch (error) {
this._close(error);
return;
}
}
};
// @ts-ignore: not using event on purpose
eventSource.onerror = (e) => {
// EventSource doesn't give any useful information about server side closes.
if (opened) {
this._close();
}
else {
reject(new Error("EventSource failed to connect. The connection could not be found on the server,"
+ " either the connection ID is not present on the server, or a proxy is refusing/buffering the connection."
+ " If you have multiple servers check that sticky sessions are enabled."));
}
};
eventSource.onopen = () => {
this._logger.log(LogLevel.Information, `SSE connected to ${this._url}`);
this._eventSource = eventSource;
opened = true;
resolve();
};
}
catch (e) {
reject(e);
return;
}
});
}
async send(data) {
if (!this._eventSource) {
return Promise.reject(new Error("Cannot send until the transport is connected"));
}
return sendMessage(this._logger, "SSE", this._httpClient, this._url, data, this._options);
}
stop() {
this._close();
return Promise.resolve();
}
_close(e) {
if (this._eventSource) {
this._eventSource.close();
this._eventSource = undefined;
if (this.onclose) {
this.onclose(e);
}
}
}
}
;// CONCATENATED MODULE: ./src/WebSocketTransport.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
/** @private */
class WebSocketTransport {
constructor(httpClient, accessTokenFactory, logger, logMessageContent, webSocketConstructor, headers) {
this._logger = logger;
this._accessTokenFactory = accessTokenFactory;
this._logMessageContent = logMessageContent;
this._webSocketConstructor = webSocketConstructor;
this._httpClient = httpClient;
this.onreceive = null;
this.onclose = null;
this._headers = headers;
}
async connect(url, transferFormat) {
Arg.isRequired(url, "url");
Arg.isRequired(transferFormat, "transferFormat");
Arg.isIn(transferFormat, TransferFormat, "transferFormat");
this._logger.log(LogLevel.Trace, "(WebSockets transport) Connecting.");
let token;
if (this._accessTokenFactory) {
token = await this._accessTokenFactory();
}
return new Promise((resolve, reject) => {
url = url.replace(/^http/, "ws");
let webSocket;
const cookies = this._httpClient.getCookieString(url);
let opened = false;
if (Platform.isNode || Platform.isReactNative) {
const headers = {};
const [name, value] = getUserAgentHeader();
headers[name] = value;
if (token) {
headers[HeaderNames.Authorization] = `Bearer ${token}`;
}
if (cookies) {
headers[HeaderNames.Cookie] = cookies;
}
// Only pass headers when in non-browser environments
webSocket = new this._webSocketConstructor(url, undefined, {
headers: { ...headers, ...this._headers },
});
}
else {
if (token) {
url += (url.indexOf("?") < 0 ? "?" : "&") + `access_token=${encodeURIComponent(token)}`;
}
}
if (!webSocket) {
// Chrome is not happy with passing 'undefined' as protocol
webSocket = new this._webSocketConstructor(url);
}
if (transferFormat === TransferFormat.Binary) {
webSocket.binaryType = "arraybuffer";
}
webSocket.onopen = (_event) => {
this._logger.log(LogLevel.Information, `WebSocket connected to ${url}.`);
this._webSocket = webSocket;
opened = true;
resolve();
};
webSocket.onerror = (event) => {
let 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;
}
else {
error = "There was an error with the transport";
}
this._logger.log(LogLevel.Information, `(WebSockets transport) ${error}.`);
};
webSocket.onmessage = (message) => {
this._logger.log(LogLevel.Trace, `(WebSockets transport) data received. ${getDataDetail(message.data, this._logMessageContent)}.`);
if (this.onreceive) {
try {
this.onreceive(message.data);
}
catch (error) {
this._close(error);
return;
}
}
};
webSocket.onclose = (event) => {
// Don't call close handler if connection was never established
// We'll reject the connect call instead
if (opened) {
this._close(event);
}
else {
let 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;
}
else {
error = "WebSocket failed to connect. The connection could not be found on the server,"
+ " either the endpoint may not be a SignalR endpoint,"
+ " the connection ID is not present on the server, or there is a proxy blocking WebSockets."
+ " If you have multiple servers check that sticky sessions are enabled.";
}
reject(new Error(error));
}
};
});
}
send(data) {
if (this._webSocket && this._webSocket.readyState === this._webSocketConstructor.OPEN) {
this._logger.log(LogLevel.Trace, `(WebSockets transport) sending data. ${getDataDetail(data, this._logMessageContent)}.`);
this._webSocket.send(data);
return Promise.resolve();
}
return Promise.reject("WebSocket is not in the OPEN state");
}
stop() {
if (this._webSocket) {
// 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();
}
_close(event) {
// webSocket will be null if the transport did not start successfully
if (this._webSocket) {
// Clear websocket handlers because we are considering the socket closed now
this._webSocket.onclose = () => { };
this._webSocket.onmessage = () => { };
this._webSocket.onerror = () => { };
this._webSocket.close();
this._webSocket = undefined;
}
this._logger.log(LogLevel.Trace, "(WebSockets transport) socket closed.");
if (this.onclose) {
if (this._isCloseEvent(event) && (event.wasClean === false || event.code !== 1000)) {
this.onclose(new Error(`WebSocket closed with status code: ${event.code} (${event.reason || "no reason given"}).`));
}
else if (event instanceof Error) {
this.onclose(event);
}
else {
this.onclose();
}
}
}
_isCloseEvent(event) {
return event && typeof event.wasClean === "boolean" && typeof event.code === "number";
}
}
;// CONCATENATED MODULE: ./src/HttpConnection.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
const MAX_REDIRECTS = 100;
/** @private */
class HttpConnection {
constructor(url, options = {}) {
this._stopPromiseResolver = () => { };
this.features = {};
this._negotiateVersion = 1;
Arg.isRequired(url, "url");
this._logger = createLogger(options.logger);
this.baseUrl = this._resolveUrl(url);
options = options || {};
options.logMessageContent = options.logMessageContent === undefined ? false : options.logMessageContent;
if (typeof options.withCredentials === "boolean" || options.withCredentials === undefined) {
options.withCredentials = options.withCredentials === undefined ? true : options.withCredentials;
}
else {
throw new Error("withCredentials option was not a 'boolean' or 'undefined' value");
}
options.timeout = options.timeout === undefined ? 100 * 1000 : options.timeout;
let webSocketModule = null;
let eventSourceModule = null;
if (Platform.isNode && "function" !== "undefined") {
// In order to ignore the dynamic require in webpack builds we need to do this magic
// @ts-ignore: TS doesn't know about these names
const requireFunc = true ? require : 0;
webSocketModule = requireFunc("ws");
eventSourceModule = requireFunc("eventsource");
}
if (!Platform.isNode && typeof WebSocket !== "undefined" && !options.WebSocket) {
options.WebSocket = WebSocket;
}
else if (Platform.isNode && !options.WebSocket) {
if (webSocketModule) {
options.WebSocket = webSocketModule;
}
}
if (!Platform.isNode && typeof EventSource !== "undefined" && !options.EventSource) {
options.EventSource = EventSource;
}
else if (Platform.isNode && !options.EventSource) {
if (typeof eventSourceModule !== "undefined") {
options.EventSource = eventSourceModule;
}
}
this._httpClient = new AccessTokenHttpClient(options.httpClient || new DefaultHttpClient(this._logger), options.accessTokenFactory);
this._connectionState = "Disconnected" /* Disconnected */;
this._connectionStarted = false;
this._options = options;
this.onreceive = null;
this.onclose = null;
}
async start(transferFormat) {
transferFormat = transferFormat || TransferFormat.Binary;
Arg.isIn(transferFormat, TransferFormat, "transferFormat");
this._logger.log(LogLevel.Debug, `Starting connection with transfer format '${TransferFormat[transferFormat]}'.`);
if (this._connectionState !== "Disconnected" /* Disconnected */) {
return Promise.reject(new Error("Cannot start an HttpConnection that is not in the 'Disconnected' state."));
}
this._connectionState = "Connecting" /* Connecting */;
this._startInternalPromise = this._startInternal(transferFormat);
await this._startInternalPromise;
// The TypeScript compiler thinks that connectionState must be Connecting here. The TypeScript compiler is wrong.
if (this._connectionState === "Disconnecting" /* Disconnecting */) {
// stop() was called and transitioned the client into the Disconnecting state.
const message = "Failed to start the HttpConnection before stop() was called.";
this._logger.log(LogLevel.Error, message);
// We cannot await stopPromise inside startInternal since stopInternal awaits the startInternalPromise.
await this._stopPromise;
return Promise.reject(new AbortError(message));
}
else if (this._connectionState !== "Connected" /* Connected */) {
// stop() was called and transitioned the client into the Disconnecting state.
const message = "HttpConnection.startInternal completed gracefully but didn't enter the connection into the connected state!";
this._logger.log(LogLevel.Error, message);
return Promise.reject(new AbortError(message));
}
this._connectionStarted = true;
}
send(data) {
if (this._connectionState !== "Connected" /* Connected */) {
return Promise.reject(new Error("Cannot send data if the connection is not in the 'Connected' State."));
}
if (!this._sendQueue) {
this._sendQueue = new TransportSendQueue(this.transport);
}
// Transport will not be null if state is connected
return this._sendQueue.send(data);
}
async stop(error) {
if (this._connectionState === "Disconnected" /* Disconnected */) {
this._logger.log(LogLevel.Debug, `Call to HttpConnection.stop(${error}) ignored because the connection is already in the disconnected state.`);
return Promise.resolve();
}
if (this._connectionState === "Disconnecting" /* Disconnecting */) {
this._logger.log(LogLevel.Debug, `Call to HttpConnection.stop(${error}) ignored because the connection is already in the disconnecting state.`);
return this._stopPromise;
}
this._connectionState = "Disconnecting" /* Disconnecting */;
this._stopPromise = new Promise((resolve) => {
// Don't complete stop() until stopConnection() completes.
this._stopPromiseResolver = resolve;
});
// stopInternal should never throw so just observe it.
await this._stopInternal(error);
await this._stopPromise;
}
async _stopInternal(error) {
// Set error as soon as possible otherwise there is a race between
// the transport closing and providing an error and the error from a close message
// We would prefer the close message error.
this._stopError = error;
try {
await this._startInternalPromise;
}
catch (e) {
// This exception is returned to the user as a rejected Promise from the start method.
}
// The transport's onclose will trigger stopConnection which will run our onclose event.
// The transport should always be set if currently connected. If it wasn't set, it's likely because
// stop was called during start() and start() failed.
if (this.transport) {
try {
await this.transport.stop();
}
catch (e) {
this._logger.log(LogLevel.Error, `HttpConnection.transport.stop() threw error '${e}'.`);
this._stopConnection();
}
this.transport = undefined;
}
else {
this._logger.log(LogLevel.Debug, "HttpConnection.transport is undefined in HttpConnection.stop() because start() failed.");
}
}
async _startInternal(transferFormat) {
// Store the original base url and the access token factory since they may change
// as part of negotiating
let url = this.baseUrl;
this._accessTokenFactory = this._options.accessTokenFactory;
this._httpClient._accessTokenFactory = this._accessTokenFactory;
try {
if (this._options.skipNegotiation) {
if (this._options.transport === HttpTransportType.WebSockets) {
// No need to add a connection ID in this case
this.transport = this._constructTransport(HttpTransportType.WebSockets);
// We should just call connect directly in this case.
// No fallback or negotiate in this case.
await this._startTransport(url, transferFormat);
}
else {
throw new Error("Negotiation can only be skipped when using the WebSocket transport directly.");
}
}
else {
let negotiateResponse = null;
let redirects = 0;
do {
negotiateResponse = await this._getNegotiationResponse(url);
// the user tries to stop the connection when it is being started
if (this._connectionState === "Disconnecting" /* Disconnecting */ || this._connectionState === "Disconnected" /* Disconnected */) {
throw new AbortError("The connection was stopped during negotiation.");
}
if (negotiateResponse.error) {
throw new Error(negotiateResponse.error);
}
if (negotiateResponse.ProtocolVersion) {
throw new Error("Detected a connection attempt to an ASP.NET SignalR Server. This client only supports connecting to an ASP.NET Core SignalR Server. See https://aka.ms/signalr-core-differences for details.");
}
if (negotiateResponse.url) {
url = negotiateResponse.url;
}
if (negotiateResponse.accessToken) {
// Replace the current access token factory with one that uses
// the returned access token
const accessToken = negotiateResponse.accessToken;
this._accessTokenFactory = () => accessToken;
// set the factory to undefined so the AccessTokenHttpClient won't retry with the same token, since we know it won't change until a connection restart
this._httpClient._accessToken = accessToken;
this._httpClient._accessTokenFactory = undefined;
}
redirects++;
} while (negotiateResponse.url && redirects < MAX_REDIRECTS);
if (redirects === MAX_REDIRECTS && negotiateResponse.url) {
throw new Error("Negotiate redirection limit exceeded.");
}
await this._createTransport(url, this._options.transport, negotiateResponse, transferFormat);
}
if (this.transport instanceof LongPollingTransport) {
this.features.inherentKeepAlive = true;
}
if (this._connectionState === "Connecting" /* Connecting */) {
// Ensure the connection transitions to the connected state prior to completing this.startInternalPromise.
// start() will handle the case when stop was called and startInternal exits still in the disconnecting state.
this._logger.log(LogLevel.Debug, "The HttpConnection connected successfully.");
this._connectionState = "Connected" /* Connected */;
}
// stop() is waiting on us via this.startInternalPromise so keep this.transport around so it can clean up.
// This is the only case startInternal can exit in neither the connected nor disconnected state because stopConnection()
// will transition to the disconnected state. start() will wait for the transition using the stopPromise.
}
catch (e) {
this._logger.log(LogLevel.Error, "Failed to start the connection: " + e);
this._connectionState = "Disconnected" /* Disconnected */;
this.transport = undefined;
// if start fails, any active calls to stop assume that start will complete the stop promise
this._stopPromiseResolver();
return Promise.reject(e);
}
}
async _getNegotiationResponse(url) {
const headers = {};
const [name, value] = getUserAgentHeader();
headers[name] = value;
const negotiateUrl = this._resolveNegotiateUrl(url);
this._logger.log(LogLevel.Debug, `Sending negotiation request: ${negotiateUrl}.`);
try {
const response = await this._httpClient.post(negotiateUrl, {
content: "",
headers: { ...headers, ...this._options.headers },
timeout: this._options.timeout,
withCredentials: this._options.withCredentials,
});
if (response.statusCode !== 200) {
return Promise.reject(new Error(`Unexpected status code returned from negotiate '${response.statusCode}'`));
}
const negotiateResponse = JSON.parse(response.content);
if (!negotiateResponse.negotiateVersion || negotiateResponse.negotiateVersion < 1) {
// Negotiate version 0 doesn't use connectionToken
// So we set it equal to connectionId so all our logic can use connectionToken without being aware of the negotiate version
negotiateResponse.connectionToken = negotiateResponse.connectionId;
}
return negotiateResponse;
}
catch (e) {
let errorMessage = "Failed to complete negotiation with the server: " + e;
if (e instanceof HttpError) {
if (e.statusCode === 404) {
errorMessage = errorMessage + " Either this is not a SignalR endpoint or there is a proxy blocking the connection.";
}
}
this._logger.log(LogLevel.Error, errorMessage);
return Promise.reject(new FailedToNegotiateWithServerError(errorMessage));
}
}
_createConnectUrl(url, connectionToken) {
if (!connectionToken) {
return url;
}
return url + (url.indexOf("?") === -1 ? "?" : "&") + `id=${connectionToken}`;
}
async _createTransport(url, requestedTransport, negotiateResponse, requestedTransferFormat) {
let connectUrl = this._createConnectUrl(url, negotiateResponse.connectionToken);
if (this._isITransport(requestedTransport)) {
this._logger.log(LogLevel.Debug, "Connection was provided an instance of ITransport, using that directly.");
this.transport = requestedTransport;
await this._startTransport(connectUrl, requestedTransferFormat);
this.connectionId = negotiateResponse.connectionId;
return;
}
const transportExceptions = [];
const transports = negotiateResponse.availableTransports || [];
let negotiate = negotiateResponse;
for (const endpoint of transports) {
const transportOrError = this._resolveTransportOrError(endpoint, requestedTransport, requestedTransferFormat);
if (transportOrError instanceof Error) {
// Store the error and continue, we don't want to cause a re-negotiate in these cases
transportExceptions.push(`${endpoint.transport} failed:`);
transportExceptions.push(transportOrError);
}
else if (this._isITransport(transportOrError)) {
this.transport = transportOrError;
if (!negotiate) {
try {
negotiate = await this._getNegotiationResponse(url);
}
catch (ex) {
return Promise.reject(ex);
}
connectUrl = this._createConnectUrl(url, negotiate.connectionToken);
}
try {
await this._startTransport(connectUrl, requestedTransferFormat);
this.connectionId = negotiate.connectionId;
return;
}
catch (ex) {
this._logger.log(LogLevel.Error, `Failed to start the transport '${endpoint.transport}': ${ex}`);
negotiate = undefined;
transportExceptions.push(new FailedToStartTransportError(`${endpoint.transport} failed: ${ex}`, HttpTransportType[endpoint.transport]));
if (this._connectionState !== "Connecting" /* Connecting */) {
const message = "Failed to select transport before stop() was called.";
this._logger.log(LogLevel.Debug, message);
return Promise.reject(new AbortError(message));
}
}
}
}
if (transportExceptions.length > 0) {
return Promise.reject(new AggregateErrors(`Unable to connect to the server with any of the available transports. ${transportExceptions.join(" ")}`, transportExceptions));
}
return Promise.reject(new Error("None of the transports supported by the client are supported by the server."));
}
_constructTransport(transport) {
switch (transport) {
case HttpTransportType.WebSockets:
if (!this._options.WebSocket) {
throw new Error("'WebSocket' is not supported in your environment.");
}
return new WebSocketTransport(this._httpClient, this._accessTokenFactory, this._logger, this._options.logMessageContent, this._options.WebSocket, this._options.headers || {});
case HttpTransportType.ServerSentEvents:
if (!this._options.EventSource) {
throw new Error("'EventSource' is not supported in your environment.");
}
return new ServerSentEventsTransport(this._httpClient, this._httpClient._accessToken, this._logger, this._options);
case HttpTransportType.LongPolling:
return new LongPollingTransport(this._httpClient, this._logger, this._options);
default:
throw new Error(`Unknown transport: ${transport}.`);
}
}
_startTransport(url, transferFormat) {
this.transport.onreceive = this.onreceive;
this.transport.onclose = (e) => this._stopConnection(e);
return this.transport.connect(url, transferFormat);
}
_resolveTransportOrError(endpoint, requestedTransport, requestedTransferFormat) {
const transport = HttpTransportType[endpoint.transport];
if (transport === null || transport === undefined) {
this._logger.log(LogLevel.Debug, `Skipping transport '${endpoint.transport}' because it is not supported by this client.`);
return new Error(`Skipping transport '${endpoint.transport}' because it is not supported by this client.`);
}
else {
if (transportMatches(requestedTransport, transport)) {
const transferFormats = endpoint.transferFormats.map((s) => TransferFormat[s]);
if (transferFormats.indexOf(requestedTransferFormat) >= 0) {
if ((transport === HttpTransportType.WebSockets && !this._options.WebSocket) ||
(transport === HttpTransportType.ServerSentEvents && !this._options.EventSource)) {
this._logger.log(LogLevel.Debug, `Skipping transport '${HttpTransportType[transport]}' because it is not supported in your environment.'`);
return new UnsupportedTransportError(`'${HttpTransportType[transport]}' is not supported in your environment.`, transport);
}
else {
this._logger.log(LogLevel.Debug, `Selecting transport '${HttpTransportType[transport]}'.`);
try {
return this._constructTransport(transport);
}
catch (ex) {
return ex;
}
}
}
else {
this._logger.log(LogLevel.Debug, `Skipping transport '${HttpTransportType[transport]}' because it does not support the requested transfer format '${TransferFormat[requestedTransferFormat]}'.`);
return new Error(`'${HttpTransportType[transport]}' does not support ${TransferFormat[requestedTransferFormat]}.`);
}
}
else {
this._logger.log(LogLevel.Debug, `Skipping transport '${HttpTransportType[transport]}' because it was disabled by the client.`);
return new DisabledTransportError(`'${HttpTransportType[transport]}' is disabled by the client.`, transport);
}
}
}
_isITransport(transport) {
return transport && typeof (transport) === "object" && "connect" in transport;
}
_stopConnection(error) {
this._logger.log(LogLevel.Debug, `HttpConnection.stopConnection(${error}) called while in state ${this._connectionState}.`);
this.transport = undefined;
// If we have a stopError, it takes precedence over the error from the transport
error = this._stopError || error;
this._stopError = undefined;
if (this._connectionState === "Disconnected" /* Disconnected */) {
this._logger.log(LogLevel.Debug, `Call to HttpConnection.stopConnection(${error}) was ignored because the connection is already in the disconnected state.`);
return;
}
if (this._connectionState === "Connecting" /* Connecting */) {
this._logger.log(LogLevel.Warning, `Call to HttpConnection.stopConnection(${error}) was ignored because the connection is still in the connecting state.`);
throw new Error(`HttpConnection.stopConnection(${error}) was called while the connection is still in the connecting state.`);
}
if (this._connectionState === "Disconnecting" /* Disconnecting */) {
// A call to stop() induced this call to stopConnection and needs to be completed.
// Any stop() awaiters will be scheduled to continue after the onclose callback fires.
this._stopPromiseResolver();
}
if (error) {
this._logger.log(LogLevel.Error, `Connection disconnected with error '${error}'.`);
}
else {
this._logger.log(LogLevel.Information, "Connection disconnected.");
}
if (this._sendQueue) {
this._sendQueue.stop().catch((e) => {
this._logger.log(LogLevel.Error, `TransportSendQueue.stop() threw error '${e}'.`);
});
this._sendQueue = undefined;
}
this.connectionId = undefined;
this._connectionState = "Disconnected" /* Disconnected */;
if (this._connectionStarted) {
this._connectionStarted = false;
try {
if (this.onclose) {
this.onclose(error);
}
}
catch (e) {
this._logger.log(LogLevel.Error, `HttpConnection.onclose(${error}) threw error '${e}'.`);
}
}
}
_resolveUrl(url) {
// startsWith is not supported in IE
if (url.lastIndexOf("https://", 0) === 0 || url.lastIndexOf("http://", 0) === 0) {
return url;
}
if (!Platform.isBrowser) {
throw new Error(`Cannot resolve '${url}'.`);
}
// Setting the url to the href propery of an anchor tag handles normalization
// for us. There are 3 main cases.
// 1. Relative path normalization e.g "b" -> "http://localhost:5000/a/b"
// 2. Absolute path normalization e.g "/a/b" -> "http://localhost:5000/a/b"
// 3. Networkpath reference normalization e.g "//localhost:5000/a/b" -> "http://localhost:5000/a/b"
const aTag = window.document.createElement("a");
aTag.href = url;
this._logger.log(LogLevel.Information, `Normalizing '${url}' to '${aTag.href}'.`);
return aTag.href;
}
_resolveNegotiateUrl(url) {
const index = url.indexOf("?");
let negotiateUrl = url.substring(0, index === -1 ? url.length : index);
if (negotiateUrl[negotiateUrl.length - 1] !== "/") {
negotiateUrl += "/";
}
negotiateUrl += "negotiate";
negotiateUrl += index === -1 ? "" : url.substring(index);
if (negotiateUrl.indexOf("negotiateVersion") === -1) {
negotiateUrl += index === -1 ? "?" : "&";
negotiateUrl += "negotiateVersion=" + this._negotiateVersion;
}
return negotiateUrl;
}
}
function transportMatches(requestedTransport, actualTransport) {
return !requestedTransport || ((actualTransport & requestedTransport) !== 0);
}
/** @private */
class TransportSendQueue {
constructor(_transport) {
this._transport = _transport;
this._buffer = [];
this._executing = true;
this._sendBufferedData = new PromiseSource();
this._transportResult = new PromiseSource();
this._sendLoopPromise = this._sendLoop();
}
send(data) {
this._bufferData(data);
if (!this._transportResult) {
this._transportResult = new PromiseSource();
}
return this._transportResult.promise;
}
stop() {
this._executing = false;
this._sendBufferedData.resolve();
return this._sendLoopPromise;
}
_bufferData(data) {
if (this._buffer.length && typeof (this._buffer[0]) !== typeof (data)) {
throw new Error(`Expected data to be of type ${typeof (this._buffer)} but was of type ${typeof (data)}`);
}
this._buffer.push(data);
this._sendBufferedData.resolve();
}
async _sendLoop() {
while (true) {
await this._sendBufferedData.promise;
if (!this._executing) {
if (this._transportResult) {
this._transportResult.reject("Connection stopped.");
}
break;
}
this._sendBufferedData = new PromiseSource();
const transportResult = this._transportResult;
this._transportResult = undefined;
const data = typeof (this._buffer[0]) === "string" ?
this._buffer.join("") :
TransportSendQueue._concatBuffers(this._buffer);
this._buffer.length = 0;
try {
await this._transport.send(data);
transportResult.resolve();
}
catch (error) {
transportResult.reject(error);
}
}
}
static _concatBuffers(arrayBuffers) {
const totalLength = arrayBuffers.map((b) => b.byteLength).reduce((a, b) => a + b);
const result = new Uint8Array(totalLength);
let offset = 0;
for (const item of arrayBuffers) {
result.set(new Uint8Array(item), offset);
offset += item.byteLength;
}
return result.buffer;
}
}
class PromiseSource {
constructor() {
this.promise = new Promise((resolve, reject) => [this._resolver, this._rejecter] = [resolve, reject]);
}
resolve() {
this._resolver();
}
reject(reason) {
this._rejecter(reason);
}
}
;// CONCATENATED MODULE: ./src/JsonHubProtocol.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
const JSON_HUB_PROTOCOL_NAME = "json";
/** Implements the JSON Hub Protocol. */
class JsonHubProtocol {
constructor() {
/** @inheritDoc */
this.name = JSON_HUB_PROTOCOL_NAME;
/** @inheritDoc */
this.version = 1;
/** @inheritDoc */
this.transferFormat = TransferFormat.Text;
}
/** Creates an array of {@link @microsoft/signalr.HubMessage} objects from the specified serialized representation.
*
* @param {string} input A string containing the serialized representation.
* @param {ILogger} logger A logger that will be used to log messages that occur during parsing.
*/
parseMessages(input, logger) {
// The interface does allow "ArrayBuffer" to be passed in, but this implementation does not. So let's throw a useful error.
if (typeof input !== "string") {
throw new Error("Invalid input for JSON hub protocol. Expected a string.");
}
if (!input) {
return [];
}
if (logger === null) {
logger = NullLogger.instance;
}
// Parse the messages
const messages = TextMessageFormat.parse(input);
const hubMessages = [];
for (const message of messages) {
const parsedMessage = JSON.parse(message);
if (typeof parsedMessage.type !== "number") {
throw new Error("Invalid payload.");
}
switch (parsedMessage.type) {
case MessageType.Invocation:
this._isInvocationMessage(parsedMessage);
break;
case MessageType.StreamItem:
this._isStreamItemMessage(parsedMessage);
break;
case MessageType.Completion:
this._isCompletionMessage(parsedMessage);
break;
case MessageType.Ping:
// Single value, no need to validate
break;
case MessageType.Close:
// All optional values, no need to validate
break;
default:
// Future protocol changes can add message types, old clients can ignore them
logger.log(LogLevel.Information, "Unknown message type '" + parsedMessage.type + "' ignored.");
continue;
}
hubMessages.push(parsedMessage);
}
return hubMessages;
}
/** Writes the specified {@link @microsoft/signalr.HubMessage} to a string and returns it.
*
* @param {HubMessage} message The message to write.
* @returns {string} A string containing the serialized representation of the message.
*/
writeMessage(message) {
return TextMessageFormat.write(JSON.stringify(message));
}
_isInvocationMessage(message) {
this._assertNotEmptyString(message.target, "Invalid payload for Invocation message.");
if (message.invocationId !== undefined) {
this._assertNotEmptyString(message.invocationId, "Invalid payload for Invocation message.");
}
}
_isStreamItemMessage(message) {
this._assertNotEmptyString(message.invocationId, "Invalid payload for StreamItem message.");
if (message.item === undefined) {
throw new Error("Invalid payload for StreamItem message.");
}
}
_isCompletionMessage(message) {
if (message.result && message.error) {
throw new Error("Invalid payload for Completion message.");
}
if (!message.result && message.error) {
this._assertNotEmptyString(message.error, "Invalid payload for Completion message.");
}
this._assertNotEmptyString(message.invocationId, "Invalid payload for Completion message.");
}
_assertNotEmptyString(value, errorMessage) {
if (typeof value !== "string" || value === "") {
throw new Error(errorMessage);
}
}
}
;// CONCATENATED MODULE: ./src/HubConnectionBuilder.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
const LogLevelNameMapping = {
trace: LogLevel.Trace,
debug: LogLevel.Debug,
info: LogLevel.Information,
information: LogLevel.Information,
warn: LogLevel.Warning,
warning: LogLevel.Warning,
error: LogLevel.Error,
critical: LogLevel.Critical,
none: LogLevel.None,
};
function parseLogLevel(name) {
// Case-insensitive matching via lower-casing
// Yes, I know case-folding is a complicated problem in Unicode, but we only support
// the ASCII strings defined in LogLevelNameMapping anyway, so it's fine -anurse.
const mapping = LogLevelNameMapping[name.toLowerCase()];
if (typeof mapping !== "undefined") {
return mapping;
}
else {
throw new Error(`Unknown log level: ${name}`);
}
}
/** A builder for configuring {@link @microsoft/signalr.HubConnection} instances. */
class HubConnectionBuilder {
configureLogging(logging) {
Arg.isRequired(logging, "logging");
if (isLogger(logging)) {
this.logger = logging;
}
else if (typeof logging === "string") {
const logLevel = parseLogLevel(logging);
this.logger = new ConsoleLogger(logLevel);
}
else {
this.logger = new ConsoleLogger(logging);
}
return this;
}
withUrl(url, transportTypeOrOptions) {
Arg.isRequired(url, "url");
Arg.isNotEmpty(url, "url");
this.url = url;
// Flow-typing knows where it's at. Since HttpTransportType is a number and IHttpConnectionOptions is guaranteed
// to be an object, we know (as does TypeScript) this comparison is all we need to figure out which overload was called.
if (typeof transportTypeOrOptions === "object") {
this.httpConnectionOptions = { ...this.httpConnectionOptions, ...transportTypeOrOptions };
}
else {
this.httpConnectionOptions = {
...this.httpConnectionOptions,
transport: transportTypeOrOptions,
};
}
return this;
}
/** Configures the {@link @microsoft/signalr.HubConnection} to use the specified Hub Protocol.
*
* @param {IHubProtocol} protocol The {@link @microsoft/signalr.IHubProtocol} implementation to use.
*/
withHubProtocol(protocol) {
Arg.isRequired(protocol, "protocol");
this.protocol = protocol;
return this;
}
withAutomaticReconnect(retryDelaysOrReconnectPolicy) {
if (this.reconnectPolicy) {
throw new Error("A reconnectPolicy has already been set.");
}
if (!retryDelaysOrReconnectPolicy) {
this.reconnectPolicy = new DefaultReconnectPolicy();
}
else if (Array.isArray(retryDelaysOrReconnectPolicy)) {
this.reconnectPolicy = new DefaultReconnectPolicy(retryDelaysOrReconnectPolicy);
}
else {
this.reconnectPolicy = retryDelaysOrReconnectPolicy;
}
return this;
}
/** Creates a {@link @microsoft/signalr.HubConnection} from the configuration options specified in this builder.
*
* @returns {HubConnection} The configured {@link @microsoft/signalr.HubConnection}.
*/
build() {
// If httpConnectionOptions has a logger, use it. Otherwise, override it with the one
// provided to configureLogger
const httpConnectionOptions = this.httpConnectionOptions || {};
// If it's 'null', the user **explicitly** asked for null, don't mess with it.
if (httpConnectionOptions.logger === undefined) {
// If our logger is undefined or null, that's OK, the HttpConnection constructor will handle it.
httpConnectionOptions.logger = this.logger;
}
// Now create the connection
if (!this.url) {
throw new Error("The 'HubConnectionBuilder.withUrl' method must be called before building the connection.");
}
const connection = new HttpConnection(this.url, httpConnectionOptions);
return HubConnection.create(connection, this.logger || NullLogger.instance, this.protocol || new JsonHubProtocol(), this.reconnectPolicy);
}
}
function isLogger(logger) {
return logger.log !== undefined;
}
;// CONCATENATED MODULE: ./src/index.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
;// CONCATENATED MODULE: ./src/browser-index.ts
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// This is where we add any polyfills we'll need for the browser. It is the entry module for browser-specific builds.
// Copy from Array.prototype into Uint8Array to polyfill on IE. It's OK because the implementations of indexOf and slice use properties
// that exist on Uint8Array with the same name, and JavaScript is magic.
// We make them 'writable' because the Buffer polyfill messes with it as well.
if (!Uint8Array.prototype.indexOf) {
Object.defineProperty(Uint8Array.prototype, "indexOf", {
value: Array.prototype.indexOf,
writable: true,
});
}
if (!Uint8Array.prototype.slice) {
Object.defineProperty(Uint8Array.prototype, "slice", {
// wrap the slice in Uint8Array so it looks like a Uint8Array.slice call
// eslint-disable-next-line object-shorthand
value: function (start, end) { return new Uint8Array(Array.prototype.slice.call(this, start, end)); },
writable: true,
});
}
if (!Uint8Array.prototype.forEach) {
Object.defineProperty(Uint8Array.prototype, "forEach", {
value: Array.prototype.forEach,
writable: true,
});
}
/******/ return __webpack_exports__;
/******/ })()
;
});
//# sourceMappingURL=signalr.js.map