@aspnet/signalr
Version:
ASP.NET Core SignalR Client
260 lines • 15 kB
JavaScript
"use strict";
// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
var AbortController_1 = require("./AbortController");
var Errors_1 = require("./Errors");
var ILogger_1 = require("./ILogger");
var ITransport_1 = require("./ITransport");
var Utils_1 = require("./Utils");
var SHUTDOWN_TIMEOUT = 5 * 1000;
// Not exported from 'index', this type is internal.
/** @private */
var LongPollingTransport = /** @class */ (function () {
function LongPollingTransport(httpClient, accessTokenFactory, logger, logMessageContent, shutdownTimeout) {
this.httpClient = httpClient;
this.accessTokenFactory = accessTokenFactory || (function () { return null; });
this.logger = logger;
this.pollAbort = new AbortController_1.AbortController();
this.logMessageContent = logMessageContent;
this.shutdownTimeout = shutdownTimeout || SHUTDOWN_TIMEOUT;
}
Object.defineProperty(LongPollingTransport.prototype, "pollAborted", {
// This is an internal type, not exported from 'index' so this is really just internal.
get: function () {
return this.pollAbort.aborted;
},
enumerable: true,
configurable: true
});
LongPollingTransport.prototype.connect = function (url, transferFormat) {
return __awaiter(this, void 0, void 0, function () {
var pollOptions, token, closeError, pollUrl, response;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
Utils_1.Arg.isRequired(url, "url");
Utils_1.Arg.isRequired(transferFormat, "transferFormat");
Utils_1.Arg.isIn(transferFormat, ITransport_1.TransferFormat, "transferFormat");
this.url = url;
this.logger.log(ILogger_1.LogLevel.Trace, "(LongPolling transport) Connecting");
if (transferFormat === ITransport_1.TransferFormat.Binary && (typeof new XMLHttpRequest().responseType !== "string")) {
// This will work if we fix: https://github.com/aspnet/SignalR/issues/742
throw new Error("Binary protocols over XmlHttpRequest not implementing advanced features are not supported.");
}
pollOptions = {
abortSignal: this.pollAbort.signal,
headers: {},
timeout: 90000,
};
if (transferFormat === ITransport_1.TransferFormat.Binary) {
pollOptions.responseType = "arraybuffer";
}
return [4 /*yield*/, this.accessTokenFactory()];
case 1:
token = _a.sent();
this.updateHeaderToken(pollOptions, token);
pollUrl = url + "&_=" + Date.now();
this.logger.log(ILogger_1.LogLevel.Trace, "(LongPolling transport) polling: " + pollUrl);
return [4 /*yield*/, this.httpClient.get(pollUrl, pollOptions)];
case 2:
response = _a.sent();
if (response.statusCode !== 200) {
this.logger.log(ILogger_1.LogLevel.Error, "(LongPolling transport) Unexpected response code: " + response.statusCode);
// Mark running as false so that the poll immediately ends and runs the close logic
closeError = new Errors_1.HttpError(response.statusText, response.statusCode);
this.running = false;
}
else {
this.running = true;
}
// tslint:disable-next-line:no-floating-promises
this.poll(this.url, pollOptions, closeError);
return [2 /*return*/, Promise.resolve()];
}
});
});
};
LongPollingTransport.prototype.updateHeaderToken = function (request, token) {
if (token) {
// tslint:disable-next-line:no-string-literal
request.headers["Authorization"] = "Bearer " + token;
return;
}
// tslint:disable-next-line:no-string-literal
if (request.headers["Authorization"]) {
// tslint:disable-next-line:no-string-literal
delete request.headers["Authorization"];
}
};
LongPollingTransport.prototype.poll = function (url, pollOptions, closeError) {
return __awaiter(this, void 0, void 0, function () {
var token, pollUrl, response, e_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, , 8, 9]);
_a.label = 1;
case 1:
if (!this.running) return [3 /*break*/, 7];
return [4 /*yield*/, this.accessTokenFactory()];
case 2:
token = _a.sent();
this.updateHeaderToken(pollOptions, token);
_a.label = 3;
case 3:
_a.trys.push([3, 5, , 6]);
pollUrl = url + "&_=" + Date.now();
this.logger.log(ILogger_1.LogLevel.Trace, "(LongPolling transport) polling: " + pollUrl);
return [4 /*yield*/, this.httpClient.get(pollUrl, pollOptions)];
case 4:
response = _a.sent();
if (response.statusCode === 204) {
this.logger.log(ILogger_1.LogLevel.Information, "(LongPolling transport) Poll terminated by server");
this.running = false;
}
else if (response.statusCode !== 200) {
this.logger.log(ILogger_1.LogLevel.Error, "(LongPolling transport) Unexpected response code: " + response.statusCode);
// Unexpected status code
closeError = new Errors_1.HttpError(response.statusText, response.statusCode);
this.running = false;
}
else {
// Process the response
if (response.content) {
this.logger.log(ILogger_1.LogLevel.Trace, "(LongPolling transport) data received. " + Utils_1.getDataDetail(response.content, this.logMessageContent));
if (this.onreceive) {
this.onreceive(response.content);
}
}
else {
// This is another way timeout manifest.
this.logger.log(ILogger_1.LogLevel.Trace, "(LongPolling transport) Poll timed out, reissuing.");
}
}
return [3 /*break*/, 6];
case 5:
e_1 = _a.sent();
if (!this.running) {
// Log but disregard errors that occur after we were stopped by DELETE
this.logger.log(ILogger_1.LogLevel.Trace, "(LongPolling transport) Poll errored after shutdown: " + e_1.message);
}
else {
if (e_1 instanceof Errors_1.TimeoutError) {
// Ignore timeouts and reissue the poll.
this.logger.log(ILogger_1.LogLevel.Trace, "(LongPolling transport) Poll timed out, reissuing.");
}
else {
// Close the connection with the error as the result.
closeError = e_1;
this.running = false;
}
}
return [3 /*break*/, 6];
case 6: return [3 /*break*/, 1];
case 7: return [3 /*break*/, 9];
case 8:
// Indicate that we've stopped so the shutdown timer doesn't get registered.
this.stopped = true;
// Clean up the shutdown timer if it was registered
if (this.shutdownTimer) {
clearTimeout(this.shutdownTimer);
}
// Fire our onclosed event
if (this.onclose) {
this.logger.log(ILogger_1.LogLevel.Trace, "(LongPolling transport) Firing onclose event. Error: " + (closeError || "<undefined>"));
this.onclose(closeError);
}
this.logger.log(ILogger_1.LogLevel.Trace, "(LongPolling transport) Transport finished.");
return [7 /*endfinally*/];
case 9: return [2 /*return*/];
}
});
});
};
LongPollingTransport.prototype.send = function (data) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
if (!this.running) {
return [2 /*return*/, Promise.reject(new Error("Cannot send until the transport is connected"))];
}
return [2 /*return*/, Utils_1.sendMessage(this.logger, "LongPolling", this.httpClient, this.url, this.accessTokenFactory, data, this.logMessageContent)];
});
});
};
LongPollingTransport.prototype.stop = function () {
return __awaiter(this, void 0, void 0, function () {
var deleteOptions, token;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, , 3, 4]);
this.running = false;
this.logger.log(ILogger_1.LogLevel.Trace, "(LongPolling transport) sending DELETE request to " + this.url + ".");
deleteOptions = {
headers: {},
};
return [4 /*yield*/, this.accessTokenFactory()];
case 1:
token = _a.sent();
this.updateHeaderToken(deleteOptions, token);
return [4 /*yield*/, this.httpClient.delete(this.url, deleteOptions)];
case 2:
_a.sent();
this.logger.log(ILogger_1.LogLevel.Trace, "(LongPolling transport) DELETE request accepted.");
return [3 /*break*/, 4];
case 3:
// Abort the poll after the shutdown timeout if the server doesn't stop the poll.
if (!this.stopped) {
this.shutdownTimer = setTimeout(function () {
_this.logger.log(ILogger_1.LogLevel.Warning, "(LongPolling transport) server did not terminate after DELETE request, canceling poll.");
// Abort any outstanding poll
_this.pollAbort.abort();
}, this.shutdownTimeout);
}
return [7 /*endfinally*/];
case 4: return [2 /*return*/];
}
});
});
};
return LongPollingTransport;
}());
exports.LongPollingTransport = LongPollingTransport;
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