@aspnet/signalr
Version:
ASP.NET Core SignalR Client
143 lines • 8.26 kB
JavaScript
;
// 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 ILogger_1 = require("./ILogger");
var ITransport_1 = require("./ITransport");
var Utils_1 = require("./Utils");
/** @private */
var ServerSentEventsTransport = /** @class */ (function () {
function ServerSentEventsTransport(httpClient, accessTokenFactory, logger, logMessageContent) {
this.httpClient = httpClient;
this.accessTokenFactory = accessTokenFactory || (function () { return null; });
this.logger = logger;
this.logMessageContent = logMessageContent;
}
ServerSentEventsTransport.prototype.connect = function (url, transferFormat) {
return __awaiter(this, void 0, void 0, function () {
var token;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
Utils_1.Arg.isRequired(url, "url");
Utils_1.Arg.isRequired(transferFormat, "transferFormat");
Utils_1.Arg.isIn(transferFormat, ITransport_1.TransferFormat, "transferFormat");
if (typeof (EventSource) === "undefined") {
throw new Error("'EventSource' is not supported in your environment.");
}
this.logger.log(ILogger_1.LogLevel.Trace, "(SSE transport) Connecting");
return [4 /*yield*/, this.accessTokenFactory()];
case 1:
token = _a.sent();
if (token) {
url += (url.indexOf("?") < 0 ? "?" : "&") + ("access_token=" + encodeURIComponent(token));
}
this.url = url;
return [2 /*return*/, new Promise(function (resolve, reject) {
var opened = false;
if (transferFormat !== ITransport_1.TransferFormat.Text) {
reject(new Error("The Server-Sent Events transport only supports the 'Text' transfer format"));
}
var eventSource = new EventSource(url, { withCredentials: true });
try {
eventSource.onmessage = function (e) {
if (_this.onreceive) {
try {
_this.logger.log(ILogger_1.LogLevel.Trace, "(SSE transport) data received. " + Utils_1.getDataDetail(e.data, _this.logMessageContent) + ".");
_this.onreceive(e.data);
}
catch (error) {
if (_this.onclose) {
_this.onclose(error);
}
return;
}
}
};
eventSource.onerror = function (e) {
var error = new Error(e.message || "Error occurred");
if (opened) {
_this.close(error);
}
else {
reject(error);
}
};
eventSource.onopen = function () {
_this.logger.log(ILogger_1.LogLevel.Information, "SSE connected to " + _this.url);
_this.eventSource = eventSource;
opened = true;
resolve();
};
}
catch (e) {
return Promise.reject(e);
}
})];
}
});
});
};
ServerSentEventsTransport.prototype.send = function (data) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
if (!this.eventSource) {
return [2 /*return*/, Promise.reject(new Error("Cannot send until the transport is connected"))];
}
return [2 /*return*/, Utils_1.sendMessage(this.logger, "SSE", this.httpClient, this.url, this.accessTokenFactory, data, this.logMessageContent)];
});
});
};
ServerSentEventsTransport.prototype.stop = function () {
this.close();
return Promise.resolve();
};
ServerSentEventsTransport.prototype.close = function (e) {
if (this.eventSource) {
this.eventSource.close();
this.eventSource = null;
if (this.onclose) {
this.onclose(e);
}
}
};
return ServerSentEventsTransport;
}());
exports.ServerSentEventsTransport = ServerSentEventsTransport;
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