text: "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 DefaultHttpClient_1 = require("./DefaultHttpClient");
  var ILogger_1 = require("./ILogger");
  var ITransport_1 = require("./ITransport");
  var LongPollingTransport_1 = require("./LongPollingTransport");
  var ServerSentEventsTransport_1 = require("./ServerSentEventsTransport");
  var Utils_1 = require("./Utils");
  var WebSocketTransport_1 = require("./WebSocketTransport");
  var MAX_REDIRECTS = 100;
  var WebSocketModule = null;
  var EventSourceModule = null;
  if (Utils_1.Platform.isNode && typeof require !== "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
      var requireFunc = typeof __webpack_require__ === "function" ? __non_webpack_require__ : require;
      WebSocketModule = requireFunc("ws");
      EventSourceModule = requireFunc("eventsource");
  }
  /** @private */
  var HttpConnection = /** @class */ (function () {
      function HttpConnection(url, options) {
          if (options === void 0) { options = {}; }
          this.features = {};
          this.negotiateVersion = 1;
          Utils_1.Arg.isRequired(url, "url");
          this.logger = Utils_1.createLogger(options.logger);
          this.baseUrl = this.resolveUrl(url);
          options = options || {};
          options.logMessageContent = options.logMessageContent || false;
          if (!Utils_1.Platform.isNode && typeof WebSocket !== "undefined" && !options.WebSocket) {
              options.WebSocket = WebSocket;
          }
          else if (Utils_1.Platform.isNode && !options.WebSocket) {
              if (WebSocketModule) {
                  options.WebSocket = WebSocketModule;
              }
          }
          if (!Utils_1.Platform.isNode && typeof EventSource !== "undefined" && !options.EventSource) {
              options.EventSource = EventSource;
          }
          else if (Utils_1.Platform.isNode && !options.EventSource) {
              if (typeof EventSourceModule !== "undefined") {
                  options.EventSource = EventSourceModule;
              }
          }
          this.httpClient = options.httpClient || new DefaultHttpClient_1.DefaultHttpClient(this.logger);
          this.connectionState = "Disconnected" /* Disconnected */;
          this.connectionStarted = false;
          this.options = options;
          this.onreceive = null;
          this.onclose = null;
      }
      HttpConnection.prototype.start = function (transferFormat) {
          return __awaiter(this, void 0, void 0, function () {
              var message, message;
              return __generator(this, function (_a) {
                  switch (_a.label) {
                      case 0:
                          transferFormat = transferFormat || ITransport_1.TransferFormat.Binary;
                          Utils_1.Arg.isIn(transferFormat, ITransport_1.TransferFormat, "transferFormat");
                          this.logger.log(ILogger_1.LogLevel.Debug, "Starting connection with transfer format '" + ITransport_1.TransferFormat[transferFormat] + "'.");
                          if (this.connectionState !== "Disconnected" /* Disconnected */) {
                              return [2 /*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);
                          return [4 /*yield*/, this.startInternalPromise];
                      case 1:
                          _a.sent();
                          if (!(this.connectionState === "Disconnecting" /* Disconnecting */)) return [3 /*break*/, 3];
                          message = "Failed to start the HttpConnection before stop() was called.";
                          this.logger.log(ILogger_1.LogLevel.Error, message);
                          // We cannot await stopPromise inside startInternal since stopInternal awaits the startInternalPromise.
                          return [4 /*yield*/, this.stopPromise];
                      case 2:
                          // We cannot await stopPromise inside startInternal since stopInternal awaits the startInternalPromise.
                          _a.sent();
                          return [2 /*return*/, Promise.reject(new Error(message))];
                      case 3:
                          if (this.connectionState !== "Connected" /* Connected */) {
                              message = "HttpConnection.startInternal completed gracefully but didn't enter the connection into the connected state!";
                              this.logger.log(ILogger_1.LogLevel.Error, message);
                              return [2 /*return*/, Promise.reject(new Error(message))];
                          }
                          _a.label = 4;
                      case 4:
                          this.connectionStarted = true;
                          return [2 /*return*/];
                  }
              });
          });
      };
      HttpConnection.prototype.send = function (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);
      };
      HttpConnection.prototype.stop = function (error) {
          return __awaiter(this, void 0, void 0, function () {
              var _this = this;
              return __generator(this, function (_a) {
                  switch (_a.label) {
                      case 0:
                          if (this.connectionState === "Disconnected" /* Disconnected */) {
                              this.logger.log(ILogger_1.LogLevel.Debug, "Call to HttpConnection.stop(" + error + ") ignored because the connection is already in the disconnected state.");
                              return [2 /*return*/, Promise.resolve()];
                          }
                          if (this.connectionState === "Disconnecting" /* Disconnecting */) {
                              this.logger.log(ILogger_1.LogLevel.Debug, "Call to HttpConnection.stop(" + error + ") ignored because the connection is already in the disconnecting state.");
                              return [2 /*return*/, this.stopPromise];
                          }
                          this.connectionState = "Disconnecting" /* Disconnecting */;
                          this.stopPromise = new Promise(function (resolve) {
                              // Don't complete stop() until stopConnection() completes.
                              _this.stopPromiseResolver = resolve;
                          });
                          // stopInternal should never throw so just observe it.
                          return [4 /*yield*/, this.stopInternal(error)];
                      case 1:
                          // stopInternal should never throw so just observe it.
                          _a.sent();
                          return [4 /*yield*/, this.stopPromise];
                      case 2:
                          _a.sent();
                          return [2 /*return*/];
                  }
              });
          });
      };
      HttpConnection.prototype.stopInternal = function (error) {
          return __awaiter(this, void 0, void 0, function () {
              var e_1, e_2, e_3;
              return __generator(this, function (_a) {
                  switch (_a.label) {
                      case 0:
                          // 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;
                          _a.label = 1;
                      case 1:
                          _a.trys.push([1, 3, , 4]);
                          return [4 /*yield*/, this.startInternalPromise];
                      case 2:
                          _a.sent();
                          return [3 /*break*/, 4];
                      case 3:
                          e_1 = _a.sent();
                          return [3 /*break*/, 4];
                      case 4:
                          if (!this.sendQueue) return [3 /*break*/, 9];
                          _a.label = 5;
                      case 5:
                          _a.trys.push([5, 7, , 8]);
                          return [4 /*yield*/, this.sendQueue.stop()];
                      case 6:
                          _a.sent();
                          return [3 /*break*/, 8];
                      case 7:
                          e_2 = _a.sent();
                          this.logger.log(ILogger_1.LogLevel.Error, "TransportSendQueue.stop() threw error '" + e_2 + "'.");
                          return [3 /*break*/, 8];
                      case 8:
                          this.sendQueue = undefined;
                          _a.label = 9;
                      case 9:
                          if (!this.transport) return [3 /*break*/, 14];
                          _a.label = 10;
                      case 10:
                          _a.trys.push([10, 12, , 13]);
                          return [4 /*yield*/, this.transport.stop()];
                      case 11:
                          _a.sent();
                          return [3 /*break*/, 13];
                      case 12:
                          e_3 = _a.sent();
                          this.logger.log(ILogger_1.LogLevel.Error, "HttpConnection.transport.stop() threw error '" + e_3 + "'.");
                          this.stopConnection();
                          return [3 /*break*/, 13];
                      case 13:
                          this.transport = undefined;
                          return [3 /*break*/, 15];
                      case 14:
                          this.logger.log(ILogger_1.LogLevel.Debug, "HttpConnection.transport is undefined in HttpConnection.stop() because start() failed.");
                          this.stopConnection();
                          _a.label = 15;
                      case 15: return [2 /*return*/];
                  }
              });
          });
      };
      HttpConnection.prototype.startInternal = function (transferFormat) {
          return __awaiter(this, void 0, void 0, function () {
              var url, negotiateResponse, redirects, _loop_1, this_1, e_4;
              return __generator(this, function (_a) {
                  switch (_a.label) {
                      case 0:
                          url = this.baseUrl;
                          this.accessTokenFactory = this.options.accessTokenFactory;
                          _a.label = 1;
                      case 1:
                          _a.trys.push([1, 12, , 13]);
                          if (!this.options.skipNegotiation) return [3 /*break*/, 5];
                          if (!(this.options.transport === ITransport_1.HttpTransportType.WebSockets)) return [3 /*break*/, 3];
                          // No need to add a connection ID in this case
                          this.transport = this.constructTransport(ITransport_1.HttpTransportType.WebSockets);
                          // We should just call connect directly in this case.
                          // No fallback or negotiate in this case.
                          return [4 /*yield*/, this.startTransport(url, transferFormat)];
                      case 2:
                          // We should just call connect directly in this case.
                          // No fallback or negotiate in this case.
                          _a.sent();
                          return [3 /*break*/, 4];
                      case 3: throw new Error("Negotiation can only be skipped when using the WebSocket transport directly.");
                      case 4: return [3 /*break*/, 11];
                      case 5:
                          negotiateResponse = null;
                          redirects = 0;
                          _loop_1 = function () {
                              var accessToken_1;
                              return __generator(this, function (_a) {
                                  switch (_a.label) {
                                      case 0: return [4 /*yield*/, this_1.getNegotiationResponse(url)];
                                      case 1:
                                          negotiateResponse = _a.sent();
                                          // the user tries to stop the connection when it is being started
                                          if (this_1.connectionState === "Disconnecting" /* Disconnecting */ || this_1.connectionState === "Disconnected" /* Disconnected */) {
                                              throw new Error("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) {
                                              accessToken_1 = negotiateResponse.accessToken;
                                              this_1.accessTokenFactory = function () { return accessToken_1; };
                                          }
                                          redirects++;
                                          return [2 /*return*/];
                                  }
                              });
                          };
                          this_1 = this;
                          _a.label = 6;
                      case 6: return [5 /*yield**/, _loop_1()];
                      case 7:
                          _a.sent();
                          _a.label = 8;
                      case 8:
                          if (negotiateResponse.url && redirects < MAX_REDIRECTS) return [3 /*break*/, 6];
                          _a.label = 9;
                      case 9:
                          if (redirects === MAX_REDIRECTS && negotiateResponse.url) {
                              throw new Error("Negotiate redirection limit exceeded.");
                          }
                          return [4 /*yield*/, this.createTransport(url, this.options.transport, negotiateResponse, transferFormat)];
                      case 10:
                          _a.sent();
                          _a.label = 11;
                      case 11:
                          if (this.transport instanceof LongPollingTransport_1.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(ILogger_1.LogLevel.Debug, "The HttpConnection connected successfully.");
                              this.connectionState = "Connected" /* Connected */;
                          }
                          return [3 /*break*/, 13];
                      case 12:
                          e_4 = _a.sent();
                          this.logger.log(ILogger_1.LogLevel.Error, "Failed to start the connection: " + e_4);
                          this.connectionState = "Disconnected" /* Disconnected */;
                          this.transport = undefined;
                          return [2 /*return*/, Promise.reject(e_4)];
                      case 13: return [2 /*return*/];
                  }
              });
          });
      };
      HttpConnection.prototype.getNegotiationResponse = function (url) {
          return __awaiter(this, void 0, void 0, function () {
              var _a, headers, token, negotiateUrl, response, negotiateResponse, e_5;
              return __generator(this, function (_b) {
                  switch (_b.label) {
                      case 0:
                          if (!this.accessTokenFactory) return [3 /*break*/, 2];
                          return [4 /*yield*/, this.accessTokenFactory()];
                      case 1:
                          token = _b.sent();
                          if (token) {
                              headers = (_a = {},
                                  _a["Authorization"] = "Bearer " + token,
                                  _a);
                          }
                          _b.label = 2;
                      case 2:
                          negotiateUrl = this.resolveNegotiateUrl(url);
                          this.logger.log(ILogger_1.LogLevel.Debug, "Sending negotiation request: " + negotiateUrl + ".");
                          _b.label = 3;
                      case 3:
                          _b.trys.push([3, 5, , 6]);
                          return [4 /*yield*/, this.httpClient.post(negotiateUrl, {
                              content: "",
                              headers: headers,
                          })];
                      case 4:
                          response = _b.sent();
                          if (response.statusCode !== 200) {
                              return [2 /*return*/, Promise.reject(new Error("Unexpected status code returned from negotiate " + response.statusCode))];
                          }
                          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 [2 /*return*/, negotiateResponse];
                      case 5:
                          e_5 = _b.sent();
                          this.logger.log(ILogger_1.LogLevel.Error, "Failed to complete negotiation with the server: " + e_5);
                          return [2 /*return*/, Promise.reject(e_5)];
                      case 6: return [2 /*return*/];
                  }
              });
          });
      };
      HttpConnection.prototype.createConnectUrl = function (url, connectionToken) {
          if (!connectionToken) {
              return url;
          }
          return url + (url.indexOf("?") === -1 ? "?" : "&") + ("id=" + connectionToken);
      };
      HttpConnection.prototype.createTransport = function (url, requestedTransport, negotiateResponse, requestedTransferFormat) {
          return __awaiter(this, void 0, void 0, function () {
              var connectUrl, transportExceptions, transports, negotiate, _i, transports_1, endpoint, transportOrError, ex_1, ex_2, message;
              return __generator(this, function (_a) {
                  switch (_a.label) {
                      case 0:
                          connectUrl = this.createConnectUrl(url, negotiateResponse.connectionToken);
                          if (!this.isITransport(requestedTransport)) return [3 /*break*/, 2];
                          this.logger.log(ILogger_1.LogLevel.Debug, "Connection was provided an instance of ITransport, using that directly.");
                          this.transport = requestedTransport;
                          return [4 /*yield*/, this.startTransport(connectUrl, requestedTransferFormat)];
                      case 1:
                          _a.sent();
                          this.connectionId = negotiateResponse.connectionId;
                          return [2 /*return*/];
                      case 2:
                          transportExceptions = [];
                          transports = negotiateResponse.availableTransports || [];
                          negotiate = negotiateResponse;
                          _i = 0, transports_1 = transports;
                          _a.label = 3;
                      case 3:
                          if (!(_i < transports_1.length)) return [3 /*break*/, 13];
                          endpoint = transports_1[_i];
                          transportOrError = this.resolveTransportOrError(endpoint, requestedTransport, requestedTransferFormat);
                          if (!(transportOrError instanceof Error)) return [3 /*break*/, 4];
                          // Store the error and continue, we don't want to cause a re-negotiate in these cases
                          transportExceptions.push(endpoint.transport + " failed: " + transportOrError);
                          return [3 /*break*/, 12];
                      case 4:
                          if (!this.isITransport(transportOrError)) return [3 /*break*/, 12];
                          this.transport = transportOrError;
                          if (!!negotiate) return [3 /*break*/, 9];
                          _a.label = 5;
                      case 5:
                          _a.trys.push([5, 7, , 8]);
                          return [4 /*yield*/, this.getNegotiationResponse(url)];
                      case 6:
                          negotiate = _a.sent();
                          return [3 /*break*/, 8];
                      case 7:
                          ex_1 = _a.sent();
                          return [2 /*return*/, Promise.reject(ex_1)];
                      case 8:
                          connectUrl = this.createConnectUrl(url, negotiate.connectionToken);
                          _a.label = 9;
                      case 9:
                          _a.trys.push([9, 11, , 12]);
                          return [4 /*yield*/, this.startTransport(connectUrl, requestedTransferFormat)];
                      case 10:
                          _a.sent();
                          this.connectionId = negotiate.connectionId;
                          return [2 /*return*/];
                      case 11:
                          ex_2 = _a.sent();
                          this.logger.log(ILogger_1.LogLevel.Error, "Failed to start the transport '" + endpoint.transport + "': " + ex_2);
                          negotiate = undefined;
                          transportExceptions.push(endpoint.transport + " failed: " + ex_2);
                          if (this.connectionState !== "Connecting " /* Connecting */) {
                              message = "Failed to select transport before stop() was called.";
                              this.logger.log(ILogger_1.LogLevel.Debug, message);
                              return [2 /*return*/, Promise.reject(new Error(message))];
                          }
                          return [3 /*break*/, 12];
                      case 12:
                          _i++;
                          return [3 /*break*/, 3];
                      case 13:
                          if (transportExceptions.length > 0) {
                              return [2 /*return*/, Promise.reject(new Error("Unable to connect to the server with any of the available transports. " + transportExceptions.join(" ")))];
                          }
                          return [2 /*return*/, Promise.reject(new Error("None of the transports supported by the client are supported by the server."))];
                  }
              });
          });
      };
      HttpConnection.prototype.constructTransport = function (transport) {
          switch (transport) {
              case ITransport_1.HttpTransportType.WebSockets:
                  if (!this.options.WebSocket) {
                      throw new Error("'WebSocket' is not supported in your environment.");
                  }
                  return new WebSocketTransport_1.WebSocketTransport(this.httpClient, this.accessTokenFactory, this.logger, this.options.logMessageContent || false, this.options.WebSocket);
              case ITransport_1.HttpTransportType.ServerSentEvents:
                  if (!this.options.EventSource) {
                      throw new Error("'EventSource' is not supported in your environment.");
                  }
                  return new ServerSentEventsTransport_1.ServerSentEventsTransport(this.httpClient, this.accessTokenFactory, this.logger, this.options.logMessageContent || false, this.options.EventSource);
              case ITransport_1.HttpTransportType.LongPolling:
                  return new LongPollingTransport_1.LongPollingTransport(this.httpClient, this.accessTokenFactory, this.logger, this.options.logMessageContent || false);
              default:
                  throw new Error("Unknown transport: " + transport + ".");
          }
      };
      HttpConnection.prototype.startTransport = function (url, transferFormat) {
          var _this = this;
          this.transport.onreceive = this.onreceive;
          this.transport.onclose = function (e) { return _this.stopConnection(e); };
          return this.transport.connect(url, transferFormat);
      };
      HttpConnection.prototype.resolveTransportOrError = function (endpoint, requestedTransport, requestedTransferFormat) {
          var transport = ITransport_1.HttpTransportType[endpoint.transport];
          if (transport === null || transport === undefined) {
              this.logger.log(ILogger_1.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)) {
                  var transferFormats = endpoint.transferFormats.map(function (s) { return ITransport_1.TransferFormat[s]; });
                  if (transferFormats.indexOf(requestedTransferFormat) >= 0) {
                      if ((transport === ITransport_1.HttpTransportType.WebSockets && !this.options.WebSocket) ||
                          (transport === ITransport_1.HttpTransportType.ServerSentEvents && !this.options.EventSource)) {
                          this.logger.log(ILogger_1.LogLevel.Debug, "Skipping transport '" + ITransport_1.HttpTransportType[transport] + "' because it is not supported in your environment.'");
                          return new Error("'" + ITransport_1.HttpTransportType[transport] + "' is not supported in your environment.");
                      }
                      else {
                          this.logger.log(ILogger_1.LogLevel.Debug, "Selecting transport '" + ITransport_1.HttpTransportType[transport] + "'.");
                          try {
                              return this.constructTransport(transport);
                          }
                          catch (ex) {
                              return ex;
                          }
                      }
                  }
                  else {
                      this.logger.log(ILogger_1.LogLevel.Debug, "Skipping transport '" + ITransport_1.HttpTransportType[transport] + "' because it does not support the requested transfer format '" + ITransport_1.TransferFormat[requestedTransferFormat] + "'.");
                      return new Error("'" + ITransport_1.HttpTransportType[transport] + "' does not support " + ITransport_1.TransferFormat[requestedTransferFormat] + ".");
                  }
              }
              else {
                  this.logger.log(ILogger_1.LogLevel.Debug, "Skipping transport '" + ITransport_1.HttpTransportType[transport] + "' because it was disabled by the client.");
                  return new Error("'" + ITransport_1.HttpTransportType[transport] + "' is disabled by the client.");
              }
          }
      };
      HttpConnection.prototype.isITransport = function (transport) {
          return transport && typeof (transport) === "object" && "connect" in transport;
      };
      HttpConnection.prototype.stopConnection = function (error) {
          this.logger.log(ILogger_1.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(ILogger_1.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(ILogger_1.LogLevel.Warning, "Call to HttpConnection.stopConnection(" + error + ") was ignored because the connection hasn't yet left the in the connecting state.");
              return;
          }
          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(ILogger_1.LogLevel.Error, "Connection disconnected with error '" + error + "'.");
          }
          else {
              this.logger.log(ILogger_1.LogLevel.Information, "Connection disconnected.");
          }
          this.connectionId = undefined;
          this.connectionState = "Disconnected" /* Disconnected */;
          if (this.onclose && this.connectionStarted) {
              this.connectionStarted = false;
              try {
                  this.onclose(error);
              }
              catch (e) {
                  this.logger.log(ILogger_1.LogLevel.Error, "HttpConnection.onclose(" + error + ") threw error '" + e + "'.");
              }
          }
      };
      HttpConnection.prototype.resolveUrl = function (url) {
          // startsWith is not supported in IE
          if (url.lastIndexOf("https://", 0) === 0 || url.lastIndexOf("http://", 0) === 0) {
              return url;
          }
          if (!Utils_1.Platform.isBrowser || !window.document) {
              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"
          var aTag = window.document.createElement("a");
          aTag.href = url;
          this.logger.log(ILogger_1.LogLevel.Information, "Normalizing '" + url + "' to '" + aTag.href + "'.");
          return aTag.href;
      };
      HttpConnection.prototype.resolveNegotiateUrl = function (url) {
          var index = url.indexOf("?");
          var 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;
      };
      return HttpConnection;
  }());
  exports.HttpConnection = HttpConnection;
  function transportMatches(requestedTransport, actualTransport) {
      return !requestedTransport || ((actualTransport & requestedTransport) !== 0);
  }
  /** @private */
  var TransportSendQueue = /** @class */ (function () {
      function TransportSendQueue(transport) {
          this.transport = transport;
          this.buffer = [];
          this.executing = true;
          this.sendBufferedData = new PromiseSource();
          this.transportResult = new PromiseSource();
          this.sendLoopPromise = this.sendLoop();
      }
      TransportSendQueue.prototype.send = function (data) {
          this.bufferData(data);
          if (!this.transportResult) {
              this.transportResult = new PromiseSource();
          }
          return this.transportResult.promise;
      };
      TransportSendQueue.prototype.stop = function () {
          this.executing = false;
          this.sendBufferedData.resolve();
          return this.sendLoopPromise;
      };
      TransportSendQueue.prototype.bufferData = function (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();
      };
      TransportSendQueue.prototype.sendLoop = function () {
          return __awaiter(this, void 0, void 0, function () {
              var transportResult, data, error_1;
              return __generator(this, function (_a) {
                  switch (_a.label) {
                      case 0:
                          if (!true) return [3 /*break*/, 6];
                          return [4 /*yield*/, this.sendBufferedData.promise];
                      case 1:
                          _a.sent();
                          if (!this.executing) {
                              if (this.transportResult) {
                                  this.transportResult.reject("Connection stopped.");
                              }
                              return [3 /*break*/, 6];
                          }
                          this.sendBufferedData = new PromiseSource();
                          transportResult = this.transportResult;
                          this.transportResult = undefined;
                          data = typeof (this.buffer[0]) === "string" ?
                              this.buffer.join("") :
                              TransportSendQueue.concatBuffers(this.buffer);
                          this.buffer.length = 0;
                          _a.label = 2;
                      case 2:
                          _a.trys.push([2, 4, , 5]);
                          return [4 /*yield*/, this.transport.send(data)];
                      case 3:
                          _a.sent();
                          transportResult.resolve();
                          return [3 /*break*/, 5];
                      case 4:
                          error_1 = _a.sent();
                          transportResult.reject(error_1);
                          return [3 /*break*/, 5];
                      case 5: return [3 /*break*/, 0];
                      case 6: return [2 /*return*/];
                  }
              });
          });
      };
      TransportSendQueue.concatBuffers = function (arrayBuffers) {
          var totalLength = arrayBuffers.map(function (b) { return b.byteLength; }).reduce(function (a, b) { return a + b; });
          var result = new Uint8Array(totalLength);
          var offset = 0;
          for (var _i = 0, arrayBuffers_1 = arrayBuffers; _i < arrayBuffers_1.length; _i++) {
              var item = arrayBuffers_1[_i];
              result.set(new Uint8Array(item), offset);
              offset += item.byteLength;
          }
          return result;
      };
      return TransportSendQueue;
  }());
  exports.TransportSendQueue = TransportSendQueue;
  var PromiseSource = /** @class */ (function () {
      function PromiseSource() {
          var _this = this;
          this.promise = new Promise(function (resolve, reject) {
              var _a;
              return _a = [resolve, reject], _this.resolver = _a[0], _this.rejecter = _a[1], _a;
          });
      }
      PromiseSource.prototype.resolve = function () {
          this.resolver();
      };
      PromiseSource.prototype.reject = function (reason) {
          this.rejecter(reason);
      };
      return PromiseSource;
  }());
  //# sourceMappingURL=HttpConnection.js.map