### FILE: C:\Users\SaherElm\Documents\Projects\xSaherelmWorkspace\Modules\xFrameworkPushServiceHolder\projects\x-framework-push-service\src\public-api.ts

/*
 * Public API Surface of x-framework-push-service
 */

//
export * from './lib/tokens/x-injectable-tokens';
export * from './lib/models/x-hub-connection.dto';
export * from './lib/typings/x-push-notification.typings';
export * from './lib/policies/x-push-service-token-fetcher';
export * from './lib/config/x-framework-push-service.config';
export * from './lib/policies/x-push-service-connection-retry-policy';

//
// Base ...
export * from './lib/base/x-rtc-peer.service';
export * from './lib/base/x-base-push.service';
export * from './lib/base/x-base-web-rtc.service';
export * from './lib/base/x-base-entity.push.service';

//
// Interfaces ...

//
// Models ...

//
// Tools ...

//
// Module ...
export * from './lib/x-framework-push-service.module';

### FILE: C:\Users\SaherElm\Documents\Projects\xSaherelmWorkspace\Modules\xFrameworkPushServiceHolder\projects\x-framework-push-service\src\lib\x-framework-push-service.module.ts

import { NgModule } from '@angular/core';

@NgModule({
  declarations: [
  ],
  imports: [
  ],
  exports: [
  ]
})
export class XFrameworkPushServiceModule { }

### FILE: C:\Users\SaherElm\Documents\Projects\xSaherelmWorkspace\Modules\xFrameworkPushServiceHolder\projects\x-framework-push-service\src\lib\base\x-base-entity.push.service.ts

import { Subject } from 'rxjs';
import { Injectable } from '@angular/core';
import { XBasePushService } from './x-base-push.service';
import { hasChild, parseJson, isNullOrUndefined } from 'x-framework-core';
import { XBaseEntityPushAction } from '../typings/x-push-notification.typings';

@Injectable()
export abstract class XBaseEntityPushService<TEntity> extends XBasePushService {
  //
  //#region Props ...
  onAdded$ = new Subject<{ model: TEntity; actorId: string }>();
  onUpdated$ = new Subject<{ model: TEntity; actorId: string }>();
  onDeleted$ = new Subject<{ model: TEntity; actorId: string }>();
  onAddOrUpdated$ = new Subject<{ model: TEntity; actorId: string }>();
  onManyAdded$ = new Subject<{ model: Array<TEntity>; actorId: string }>();
  onManyUpdated$ = new Subject<{ model: Array<TEntity>; actorId: string }>();
  onManyDeleted$ = new Subject<{ model: Array<TEntity>; actorId: string }>();
  //#endregion

  //
  //#region Actions ...
  /**
   * Fire Add Action ...
   *
   * @param model
   * @returns
   */
  async add(model: TEntity) {
    //
    // Validate ...
    let isValid = !isNullOrUndefined(model);
    if (!isValid) {
      return;
    }

    //
    await this.invoke(XBaseEntityPushAction.Add, JSON.stringify(model));
  }

  /**
   * Fire Update Action ...
   *
   * @param model
   * @returns
   */
  async update(model: TEntity) {
    //
    // Validate ...
    let isValid = !isNullOrUndefined(model);
    if (!isValid) {
      return;
    }

    //
    await this.invoke(XBaseEntityPushAction.Update, JSON.stringify(model));
  }

  /**
   * Fire Delete Action ...
   *
   * @param model
   * @returns
   */
  async delete(model: TEntity) {
    //
    // Validate ...
    let isValid = !isNullOrUndefined(model);
    if (!isValid) {
      return;
    }

    //
    await this.invoke(XBaseEntityPushAction.Delete, JSON.stringify(model));
  }

  /**
   * Fire Add Or Update Action ...
   *
   * @param model
   * @returns
   */
  async addOrUpdate(model: TEntity) {
    //
    // Validate ...
    let isValid = !isNullOrUndefined(model);
    if (!isValid) {
      return;
    }

    //
    await this.invoke(XBaseEntityPushAction.AddOrUpdate, JSON.stringify(model));
  }

  /**
   * Fire Add Many Action ...
   *
   * @param model
   * @returns
   */
  async addMany(models: Array<TEntity>) {
    //
    // Validate ...
    let isValid = !isNullOrUndefined(models) && hasChild(models);
    if (!isValid) {
      return;
    }

    //
    await this.invoke(XBaseEntityPushAction.AddMany, JSON.stringify(models));
  }

  /**
   * Fire Update Many Action ...
   *
   * @param model
   * @returns
   */
  async updateMany(models: Array<TEntity>) {
    //
    // Validate ...
    let isValid = !isNullOrUndefined(models) && hasChild(models);
    if (!isValid) {
      return;
    }

    //
    await this.invoke(XBaseEntityPushAction.UpdateMany, JSON.stringify(models));
  }

  /**
   * Fire Delete Many Action ...
   *
   * @param model
   * @returns
   */
  async deleteMany(models: Array<TEntity>) {
    //
    // Validate ...
    let isValid = !isNullOrUndefined(models) && hasChild(models);
    if (!isValid) {
      return;
    }

    //
    await this.invoke(XBaseEntityPushAction.DeleteMany, JSON.stringify(models));
  }
  //#endregion

  //
  registerSubjects(): void {
    super.registerSubjects();

    //
    this.onAdded((model: TEntity, actorId: string) => {
      this.onAdded$.next({ model, actorId });
    });

    //
    this.onUpdated((model: TEntity, actorId: string) => {
      this.onUpdated$.next({ model, actorId });
    });

    //
    this.onDeleted((model: TEntity, actorId: string) => {
      this.onDeleted$.next({ model, actorId });
    });

    //
    this.onAddOrUpdated((model: TEntity, actorId: string) => {
      this.onAddOrUpdated$.next({ model, actorId });
    });

    //
    this.onManyAdded((model: Array<TEntity>, actorId: string) => {
      this.onManyAdded$.next({ model, actorId });
    });

    //
    this.onManyUpdated((model: Array<TEntity>, actorId: string) => {
      this.onManyUpdated$.next({ model, actorId });
    });

    //
    this.onManyDeleted((model: Array<TEntity>, actorId: string) => {
      this.onManyDeleted$.next({ model, actorId });
    });
  }

  //
  //#region Event Oners ...
  /**
   * Register Add Event Listener ...
   *
   * @param callback
   */
  public onAdded(callback: (model: TEntity, actorId: string) => any) {
    //
    this.on(XBaseEntityPushAction.Add, (modelJson: string, actorId: string) => {
      //
      const model = parseJson<TEntity>(modelJson);
      callback(model, actorId);
    });
  }

  /**
   * Register Update Event Listener ...
   *
   * @param callback
   */
  public onUpdated(callback: (model: TEntity, actorId: string) => any) {
    //
    this.on(
      XBaseEntityPushAction.Update,
      (modelJson: string, actorId: string) => {
        //
        const model = parseJson<TEntity>(modelJson);
        callback(model, actorId);
      }
    );
  }

  /**
   * Register Delete Event Listener ...
   *
   * @param callback
   */
  public onDeleted(callback: (model: TEntity, actorId: string) => any) {
    //
    this.on(
      XBaseEntityPushAction.Delete,
      (modelJson: string, actorId: string) => {
        //
        const model = parseJson<TEntity>(modelJson);
        callback(model, actorId);
      }
    );
  }

  /**
   * Register Add Or Update Event Listener ...
   *
   * @param callback
   */
  public onAddOrUpdated(callback: (model: TEntity, actorId: string) => any) {
    //
    this.on(
      XBaseEntityPushAction.AddOrUpdate,
      (modelJson: string, actorId: string) => {
        //
        const model = parseJson<TEntity>(modelJson);
        callback(model, actorId);
      }
    );
  }

  /**
   * Register Many Added Event Listener ...
   *
   * @param callback
   */
  public onManyAdded(
    callback: (model: Array<TEntity>, actorId: string) => any
  ) {
    //
    this.on(
      XBaseEntityPushAction.AddMany,
      (modelJson: string, actorId: string) => {
        //
        const model = parseJson<Array<TEntity>>(modelJson);
        callback(model, actorId);
      }
    );
  }

  /**
   * Register Many Updated Event Listener ...
   *
   * @param callback
   */
  public onManyUpdated(
    callback: (model: Array<TEntity>, actorId: string) => any
  ) {
    //
    this.on(
      XBaseEntityPushAction.UpdateMany,
      (modelJson: string, actorId: string) => {
        //
        const model = parseJson<Array<TEntity>>(modelJson);
        callback(model, actorId);
      }
    );
  }

  /**
   * Register Many Deleted Event Listener ...
   *
   * @param callback
   */
  public onManyDeleted(
    callback: (model: Array<TEntity>, actorId: string) => any
  ) {
    //
    this.on(
      XBaseEntityPushAction.DeleteMany,
      (modelJson: string, actorId: string) => {
        //
        const model = parseJson<Array<TEntity>>(modelJson);
        callback(model, actorId);
      }
    );
  }
  //#endregion

  //
  //#region Event Offers ...
  /**
   * UnRegister Add Event Listener ...
   *
   * @param callback
   */
  public offAdded(callback?: (model: TEntity, actorId: string) => any) {
    this.off(XBaseEntityPushAction.Add, callback);
  }

  /**
   * UnRegister Update Event Listener ...
   *
   * @param callback
   */
  public offUpdated(callback?: (model: TEntity, actorId: string) => any) {
    this.off(XBaseEntityPushAction.Update, callback);
  }

  /**
   * UnRegister Delete Event Listener ...
   *
   * @param callback
   */
  public offDeleted(callback?: (model: TEntity, actorId: string) => any) {
    this.off(XBaseEntityPushAction.Delete, callback);
  }

  /**
   * UnRegister Add Or Update Event Listener ...
   *
   * @param callback
   */
  public offAddOrUpdated(callback?: (model: TEntity, actorId: string) => any) {
    this.off(XBaseEntityPushAction.AddOrUpdate, callback);
  }

  /**
   * UnRegister Many Added Event Listener ...
   *
   * @param callback
   */
  public offManyAdded(
    callback?: (model: Array<TEntity>, actorId: string) => any
  ) {
    this.off(XBaseEntityPushAction.AddMany, callback);
  }

  /**
   * UnRegister Many Updated Event Listener ...
   *
   * @param callback
   */
  public offManyUpdated(
    callback?: (model: Array<TEntity>, actorId: string) => any
  ) {
    this.off(XBaseEntityPushAction.UpdateMany, callback);
  }

  /**
   * UnRegister Many Deleted Event Listener ...
   *
   * @param callback
   */
  public offManyDeleted(
    callback?: (model: Array<TEntity>, actorId: string) => any
  ) {
    this.off(XBaseEntityPushAction.DeleteMany, callback);
  }
  //#endregion
}

### FILE: C:\Users\SaherElm\Documents\Projects\xSaherelmWorkspace\Modules\xFrameworkPushServiceHolder\projects\x-framework-push-service\src\lib\base\x-base-push.service.ts

import {
  isFunction,
  XBaseService,
  XExceptionIDs,
  throwException,
  isNullOrUndefined,
  isNullOrEmptyString,
} from 'x-framework-core';
import {
  ITransport,
  HubConnection,
  MessageHeaders,
  HttpTransportType,
  HubConnectionState,
  HubConnectionBuilder,
  IHttpConnectionOptions,
} from '@microsoft/signalr';
import { Subject } from 'rxjs';
import {
  X_FRAMEWORK_PUSH_SERVICE_CONFIG,
  X_FRAMEWORK_PUSH_SERVICE_TOKEN_FETCHER,
} from '../tokens/x-injectable-tokens';
import { Inject, Injectable, Optional } from '@angular/core';
import { XBasePushAction } from '../typings/x-push-notification.typings';
import { MessagePackHubProtocol } from '@microsoft/signalr-protocol-msgpack';
import { IXPushServiceTokenFetcher } from '../policies/x-push-service-token-fetcher';
import { XFrameworkPushServiceConfig } from '../config/x-framework-push-service.config';
import { XPushServiceConnectionRetryPolicy } from '../policies/x-push-service-connection-retry-policy';

@Injectable()
export abstract class XBasePushService extends XBaseService {
  //
  //#region Props ...
  //
  private CONNECTION_ID: string;
  private HUB_CONNECTION: HubConnection;
  private HUB_CONNECTION_POLICY: XPushServiceConnectionRetryPolicy;

  //
  public readonly connect$ = new Subject();
  public readonly error$ = new Subject<any>();
  public readonly newConnection$ = new Subject<string>();
  public readonly connectionClosed$ = new Subject<string>();

  /**
   * readonly connection id ...
   */
  get connectionId() {
    //
    let result = '';

    //
    if (!isNullOrUndefined(this.HUB_CONNECTION)) {
      result = this.HUB_CONNECTION.connectionId;
    }

    //
    return result;
  }
  //#endregion

  //
  //#region Abstract ...
  /**
   * retrieve specific hub's name and route ...
   */
  abstract hubName(): string;

  /**
   * specify the service required access token validator or not ...
   */
  abstract requiredAccessToken(): boolean;

  /**
   * specify which protocols can used as transport protocol ...
   */
  abstract transportType(): HttpTransportType | ITransport;

  /**
   * Specified Skip Negotiation ...
   */
  public skipNegotiation: boolean = false;
  //#endregion

  //
  //#region Constructor ...
  constructor(
    //
    @Inject(X_FRAMEWORK_PUSH_SERVICE_CONFIG)
    public config: XFrameworkPushServiceConfig,

    //
    @Optional()
    @Inject(X_FRAMEWORK_PUSH_SERVICE_TOKEN_FETCHER)
    public tokenFetcher?: IXPushServiceTokenFetcher
  ) {
    super(config);
  }
  //#endregion

  //
  //#region Actions ...
  /**
   * determines connection is stablished ot not ...
   * @returns boolean value ...
   */
  public isConnected() {
    //
    const result =
      !isNullOrUndefined(this.HUB_CONNECTION) &&
      this.HUB_CONNECTION.state === HubConnectionState.Connected;
    return result;
  }

  /**
   * retrieve hub route ...
   * @returns string represent hub url ...
   */
  public getHubRoute() {
    //
    let result = '';

    //
    // check config exists and
    // check server route ...
    if (
      isNullOrUndefined(this.config) ||
      isNullOrEmptyString(this.hubName()) ||
      isNullOrEmptyString(this.config.hubServerRoute)
    ) {
      return result;
    }

    //
    // Configure route ...
    result = this.config.hubServerRoute.endsWith('/')
      ? `${this.config.hubServerRoute}${
          this.config.hubsBaseRoute
        }/${this.hubName()}`
      : `${this.config.hubServerRoute}/${
          this.config.hubsBaseRoute
        }/${this.hubName()}`;

    //
    return result;
  }

  /**
   * connect to server ...
   */
  public async connect() {
    //
    // Instantiate Hub Connection ...
    if (!this.HUB_CONNECTION) {
      //
      // Prepare Reconnection Policy ...
      this.HUB_CONNECTION_POLICY = new XPushServiceConnectionRetryPolicy(
        this.config
      );

      //
      // retrieve and validate ...
      let hubRoute = this.getHubRoute();
      if (isNullOrEmptyString(hubRoute)) {
        throwException(XExceptionIDs.InvalidConfiguration);
      }

      //
      // Normalize Transport Type ...
      let transport: HttpTransportType | ITransport =
        HttpTransportType.LongPolling;
      if (!isNullOrUndefined(this.transportType())) {
        transport = this.transportType();
      }

      //
      // Add Custom Headers if Required ...
      let headers: MessageHeaders = {};

      //
      // Create Connection Options ...
      const connectionOptions: IHttpConnectionOptions = {
        headers,
        transport,
        skipNegotiation: this.skipNegotiation,
      };

      //
      // Attach Token Fetcher ...
      if (
        !!this.requiredAccessToken() &&
        !isNullOrUndefined(this.tokenFetcher)
      ) {
        connectionOptions.accessTokenFactory = () =>
          this.tokenFetcher.getToken();
      }
      //
      // Create Connection builder ...
      const connectionBuilder = new HubConnectionBuilder()
        .withUrl(hubRoute, connectionOptions)
        .configureLogging(this.config.connectionLogLevel)
        .withAutomaticReconnect(this.HUB_CONNECTION_POLICY);

      //
      // Handle Message Protocol ...
      if (!!this.config.addSupportMessageProtocol) {
        connectionBuilder.withHubProtocol(new MessagePackHubProtocol());
      }

      //
      // Add LogLevel ...
      if (!isNullOrUndefined(this.config.connectionLogLevel)) {
        connectionBuilder.configureLogging(this.config.connectionLogLevel);
      }

      //
      // Create Connection ...
      this.HUB_CONNECTION = connectionBuilder.build();

      //
      // Add Default Base Actions Event Handlers ...
      this.on(XBasePushAction.NewConnection, (connectionId) =>
        this.newConnection$.next(connectionId)
      );
      this.on(XBasePushAction.ConnectionClosed, (connectionId) =>
        this.connectionClosed$.next(connectionId)
      );
    }

    //
    await this.HUB_CONNECTION.start();
    if (!isNullOrEmptyString(this.HUB_CONNECTION.connectionId)) {
      //
      this.CONNECTION_ID = this.HUB_CONNECTION.connectionId;
      this.connect$.next();
      this.registerSubjects();
    } else {
      this.CONNECTION_ID = '';
    }
  }

  /**
   * Disconnect a Connection if Exists ...
   */
  public async disconnect() {
    //
    if (
      this.HUB_CONNECTION &&
      this.HUB_CONNECTION.state !== HubConnectionState.Disconnected
    ) {
      //
      await this.HUB_CONNECTION.stop();
      this.HUB_CONNECTION = undefined;
    }
  }

  /**
   * Attach an Event Listener to Hub ...
   *
   * @param event
   * @param callback
   */
  on(event: string, callback: (...args: any[]) => any) {
    //
    // Validate ...
    if (
      !isFunction(callback) ||
      isNullOrEmptyString(event) ||
      isNullOrUndefined(callback) ||
      isNullOrUndefined(this.HUB_CONNECTION)
    ) {
      return;
    }

    //
    this.HUB_CONNECTION.on(event, callback);
  }

  /**
   * Detach an Event Listener to Hub ...
   *
   * @param event
   * @param callback
   */
  off(event: string, callback?: (...args: any[]) => any): void {
    //
    // Validate ...
    if (isNullOrEmptyString(event) || isNullOrUndefined(this.HUB_CONNECTION)) {
      return;
    }

    //
    if (isNullOrUndefined(callback)) {
      this.HUB_CONNECTION.off(event);
    } else if (!isFunction(callback) || isNullOrUndefined(callback)) {
      this.HUB_CONNECTION.off(event, callback);
    }
  }

  /**
   * Invoke Specified Hub Actions ...
   *
   * @param method
   * @param args
   * @returns
   */
  async invoke<T = any>(method: string, ...args: any[]) {
    //
    // Validate Hub Connected ...
    if (!this.isConnected() || isNullOrUndefined(this.HUB_CONNECTION)) {
      return await Promise.resolve(undefined);
    }

    //
    return await this.HUB_CONNECTION.invoke<T>(method, ...args);
  }
  //#endregion

  //
  //#region Abstractions ...
  /**
   * here we have to register all events subjects ...
   */
  registerSubjects() {}
  //#endregion

  //
  //#region Private ...
  //#endregion
}

### FILE: C:\Users\SaherElm\Documents\Projects\xSaherelmWorkspace\Modules\xFrameworkPushServiceHolder\projects\x-framework-push-service\src\lib\base\x-base-web-rtc.service.ts

import { Subject } from 'rxjs';
import {
  X_FRAMEWORK_PUSH_SERVICE_CONFIG,
  X_FRAMEWORK_PUSH_SERVICE_TOKEN_FETCHER,
} from '../tokens/x-injectable-tokens';
import { isString } from 'x-framework-core';
import { XBasePushService } from './x-base-push.service';
import { Inject, Injectable, Optional } from '@angular/core';
import { XWebRTCAction } from '../typings/x-push-notification.typings';
import { IXPushServiceTokenFetcher } from '../policies/x-push-service-token-fetcher';
import { XFrameworkPushServiceConfig } from '../config/x-framework-push-service.config';

@Injectable()
export abstract class XBaseWebRTCService extends XBasePushService {
  //
  //#region Props ...
  public onOfferRecieved$ = new Subject<any>();
  public onAnswerRecieved$ = new Subject<{
    answer: any;
    requesterId: string;
  }>();
  public onCandidateRecieved$ = new Subject<{
    candidate: any;
    senderId: string;
  }>();
  //#endregion

  //
  //#region Constructor ...
  constructor(
    //
    @Inject(X_FRAMEWORK_PUSH_SERVICE_CONFIG)
    public config: XFrameworkPushServiceConfig,

    //
    @Optional()
    @Inject(X_FRAMEWORK_PUSH_SERVICE_TOKEN_FETCHER)
    public tokenFetcher?: IXPushServiceTokenFetcher
  ) {
    super(config, tokenFetcher);
  }
  //#endregion

  //
  //#region Actions ...
  public async offer(offer: any, to: string) {
    //
    if (!isString(offer)) {
      offer = JSON.stringify(offer);
    }

    //
    await this.invoke(XWebRTCAction.Offer, offer, to);
  }

  public async answer(answer: any) {
    //
    if (!isString(answer)) {
      answer = JSON.stringify(answer);
    }

    //
    await this.invoke(XWebRTCAction.Answer, answer);
  }

  public async candidate(candidate: any, to: string) {
    //
    if (!isString(candidate)) {
      candidate = JSON.stringify(candidate);
    }

    //
    await this.invoke(XWebRTCAction.Candidate, candidate, to);
  }
  //#endregion

  /**
   * Register All Available
   */
  registerSubjects(): void {
    super.registerSubjects();

    //
    this.onOfferRecieved((offer: any) => {
      this.onOfferRecieved$.next(offer);
    });

    //
    this.onAnswerRecieved((answer: any, requesterId: string) => {
      this.onAnswerRecieved$.next({ answer, requesterId });
    });

    //
    this.onCandidateRecieved((candidate: any, senderId: string) => {
      this.onCandidateRecieved$.next({ candidate, senderId });
    });
  }

  //
  //#region Event Handler Attaches ...
  public onOfferRecieved(callback: (offer: any) => any) {
    this.on(XWebRTCAction.Offer, callback);
  }

  public onAnswerRecieved(callback: (answer: any, requesterId: string) => any) {
    this.on(XWebRTCAction.Answer, callback);
  }

  public onCandidateRecieved(
    callback: (candidate: any, senderId: string) => any
  ) {
    this.on(XWebRTCAction.Candidate, callback);
  }
  //#endregion

  //
  //#region Event Handler Detachers ...
  public offOfferRecieved(callback?: (offer: any) => any) {
    this.off(XWebRTCAction.Offer, callback);
  }

  public offAnswerRecieved(
    callback?: (answer: any, requesterId: string) => any
  ) {
    this.off(XWebRTCAction.Answer, callback);
  }

  public offCandidateRecieved(
    callback?: (candidate: any, senderId: string) => any
  ) {
    this.off(XWebRTCAction.Candidate, callback);
  }
  //#endregion
}

### FILE: C:\Users\SaherElm\Documents\Projects\xSaherelmWorkspace\Modules\xFrameworkPushServiceHolder\projects\x-framework-push-service\src\lib\base\x-rtc-peer.service.ts


import { Inject, Injectable } from '@angular/core';
import { X_FRAMEWORK_PUSH_SERVICE_CONFIG } from '../tokens/x-injectable-tokens';
import { XFrameworkPushServiceConfig } from '../config/x-framework-push-service.config';

@Injectable({
  providedIn: 'root'
})
export class XRTCPeerService {
  //
  //#region Constructor ...
  constructor(
    @Inject(X_FRAMEWORK_PUSH_SERVICE_CONFIG)
    public config: XFrameworkPushServiceConfig
  ) {}
  //#endregion

  //
  //#region Actions ...
  public createConnection() {
    //
    const result = new RTCPeerConnection({
      iceServers: [...this.config.iceServers],
    });

    //
    return result;
  }
  //#endregion
}

### FILE: C:\Users\SaherElm\Documents\Projects\xSaherelmWorkspace\Modules\xFrameworkPushServiceHolder\projects\x-framework-push-service\src\lib\config\x-framework-push-service.config.ts

import { LogLevel } from '@microsoft/signalr';
import { XFrameworkCoreConfig } from 'x-framework-core';
import { XFrameworkServicesConfig } from 'x-framework-services';

export type XSharedConfig = XFrameworkCoreConfig & XFrameworkServicesConfig;

export interface XFrameworkPushServiceConfig extends XSharedConfig {
  //
  // Push Service Configuration ...
  hubsBaseRoute: string;
  hubServerRoute: string;
  connectionLogLevel?: LogLevel;
  pushConnectionMaxRetry: number;
  addSupportMessageProtocol?: boolean;
  pushConnectionReconnectDelay: number;

  //
  iceServers: Array<RTCIceServer>;
}

### FILE: C:\Users\SaherElm\Documents\Projects\xSaherelmWorkspace\Modules\xFrameworkPushServiceHolder\projects\x-framework-push-service\src\lib\models\x-hub-connection.dto.ts

import { XBaseDto } from 'x-framework-core';

export interface XHubConnectionDto extends XBaseDto {
  userId: string;
  username?: string;
  connectionId: string;
}

### FILE: C:\Users\SaherElm\Documents\Projects\xSaherelmWorkspace\Modules\xFrameworkPushServiceHolder\projects\x-framework-push-service\src\lib\policies\x-push-service-connection-retry-policy.ts

import { Inject } from '@angular/core';
import { IRetryPolicy, RetryContext } from '@microsoft/signalr';
import { XFrameworkPushServiceConfig } from '../config/x-framework-push-service.config';
import { X_FRAMEWORK_PUSH_SERVICE_CONFIG } from '../tokens/x-injectable-tokens';

export class XPushServiceConnectionRetryPolicy implements IRetryPolicy {
  //
  //#region Props ...
  retryReason: Error = null;
  previousRetryCount: number = 0;
  elapsedMilliseconds: number = 0;
  //#endregion

  //
  //#region Constructor ...
  constructor(
    @Inject(X_FRAMEWORK_PUSH_SERVICE_CONFIG)
    public config: XFrameworkPushServiceConfig
  ) {}
  //#endregion

  //
  nextRetryDelayInMilliseconds(retryContext: RetryContext): number {
    //
    this.retryReason = retryContext.retryReason;
    this.previousRetryCount = retryContext.previousRetryCount;
    this.elapsedMilliseconds = retryContext.elapsedMilliseconds;

    //
    if (retryContext.previousRetryCount < this.config.pushConnectionMaxRetry) {
      return this.config.pushConnectionReconnectDelay;
    } else {
      return null;
    }
  }
}

### FILE: C:\Users\SaherElm\Documents\Projects\xSaherelmWorkspace\Modules\xFrameworkPushServiceHolder\projects\x-framework-push-service\src\lib\policies\x-push-service-token-fetcher.ts

import { Observable } from 'rxjs';

/**
 * an interface for accessing tokens and user related infos ...
 */
export interface IXPushServiceTokenFetcher {
  token$: Observable<string>;
  getToken(): string;
}

### FILE: C:\Users\SaherElm\Documents\Projects\xSaherelmWorkspace\Modules\xFrameworkPushServiceHolder\projects\x-framework-push-service\src\lib\tokens\x-injectable-tokens.ts

import { InjectionToken } from '@angular/core';
import { IXPushServiceTokenFetcher } from '../policies/x-push-service-token-fetcher';
import { XFrameworkPushServiceConfig } from '../config/x-framework-push-service.config';

export const X_FRAMEWORK_PUSH_SERVICE_CONFIG = new InjectionToken<XFrameworkPushServiceConfig>(
  'x_config'
);

export const X_FRAMEWORK_PUSH_SERVICE_TOKEN_FETCHER = new InjectionToken<IXPushServiceTokenFetcher>(
  'x_push_token_fetcher'
);

### FILE: C:\Users\SaherElm\Documents\Projects\xSaherelmWorkspace\Modules\xFrameworkPushServiceHolder\projects\x-framework-push-service\src\lib\typings\x-push-notification.typings.ts

/**
 * Base Hub Service Actions ...
 */
export enum XBasePushAction {
  /// <summary>
  /// new Connection Join ...
  /// </summary>
  NewConnection = 'NewConnection',
  /// <summary>
  /// an Exists Connection Closed ...
  /// </summary>
  ConnectionClosed = 'ConnectionClosed',
}

/**
 * Base Web RTC Actions ...
 */
export enum XWebRTCAction {
  Offer = 'Offer',
  Answer = 'Answer',
  Candidate = 'Candidate',
}

/**
 * Base Entity Push Service Actions ...
 */
export enum XBaseEntityPushAction {
  Add = 'Add',
  Update = 'Update',
  Delete = 'Delete',
  AddMany = 'AddMany',
  UpdateMany = 'UpdateMany',
  DeleteMany = 'DeleteMany',
  AddOrUpdate = 'AddOrUpdate',
}