diff --git a/src/api/data.service.spec.ts b/src/api/data.service.spec.ts
index 8961a48..062e315 100644
--- a/src/api/data.service.spec.ts
+++ b/src/api/data.service.spec.ts
@@ -1,8 +1,10 @@
 import { TestBed } from '@/testing';
-import { provideHttpClientTesting } from '@/testing/http';
+import {
+  HTTP_CLIENT_TEST_CONTROLLER,
+  provideHttpClientTesting,
+} from '@/testing/http';
 import { HttpHeaders } from '@ngify/http';
-import { HttpTestingController } from '@ngify/http/testing';
-import { provideHttpClient, withInterceptorsFromDi } from 'oidc-client-rx';
+import type { HttpTestingController } from '@ngify/http/testing';
 import { firstValueFrom } from 'rxjs';
 import { DataService } from './data.service';
 import { HttpBaseService } from './http-base.service';
@@ -14,15 +16,10 @@ describe('Data Service', () => {
   beforeEach(() => {
     TestBed.configureTestingModule({
       imports: [],
-      providers: [
-        DataService,
-        HttpBaseService,
-        provideHttpClient(withInterceptorsFromDi()),
-        provideHttpClientTesting(),
-      ],
+      providers: [DataService, HttpBaseService, provideHttpClientTesting()],
     });
     dataService = TestBed.inject(DataService);
-    httpMock = TestBed.inject(HttpTestingController);
+    httpMock = TestBed.inject(HTTP_CLIENT_TEST_CONTROLLER);
   });
 
   it('should create', () => {
diff --git a/src/http/index.ts b/src/http/index.ts
index 8daced4..256fc95 100644
--- a/src/http/index.ts
+++ b/src/http/index.ts
@@ -1,17 +1,121 @@
-import type { HttpFeature, HttpInterceptor } from '@ngify/http';
-import { InjectionToken } from 'injection-js';
+import {
+  type HttpBackend,
+  HttpClient,
+  type HttpFeature,
+  HttpFeatureKind,
+  type HttpInterceptor,
+  type HttpInterceptorFn,
+  withInterceptors,
+  withLegacyInterceptors,
+} from '@ngify/http';
+import { InjectionToken, Optional, type Provider } from 'injection-js';
+import type { ArrayOrNullableOne } from '../utils/types';
 export { HttpParams, HttpParamsOptions } from './params';
 
-export const HTTP_INTERCEPTORS = new InjectionToken<readonly HttpInterceptor[]>(
-  'HTTP_INTERCEPTORS'
+export const HTTP_FEATURES = new InjectionToken<HttpFeature[]>('HTTP_FEATURES');
+
+export const HTTP_INTERCEPTOR_FNS = new InjectionToken<HttpInterceptorFn[]>(
+  'HTTP_INTERCEPTOR_FNS'
 );
 
-export function provideHttpClient() {
-  // todo
-  throw new Error('todo!');
-}
+export const HTTP_LEGACY_INTERCEPTORS = new InjectionToken<HttpInterceptor[]>(
+  'HTTP_LEGACY_INTERCEPTORS'
+);
 
-export function withInterceptorsFromDi(): HttpFeature {
-  // todo
-  throw new Error('todo!');
+export const HTTP_BACKEND = new InjectionToken<HttpBackend>('HTTP_BACKEND');
+
+export const HTTP_XSRF_PROTECTION = new InjectionToken<HttpInterceptorFn>(
+  'HTTP_XSRF_PROTECTION'
+);
+
+export function provideHttpClient(features: HttpFeature[] = []): Provider[] {
+  return [
+    {
+      provide: HTTP_INTERCEPTOR_FNS,
+      multi: true,
+      useValue: [],
+    },
+    {
+      provide: HTTP_LEGACY_INTERCEPTORS,
+      multi: true,
+      useValue: [],
+    },
+    {
+      provide: HTTP_FEATURES,
+      useFactory: (
+        interceptors: ArrayOrNullableOne<HttpInterceptorFn>[]
+      ): HttpFeature[] => {
+        const normalizedInterceptors = [interceptors]
+          .flat(Number.MAX_SAFE_INTEGER)
+          .filter(Boolean) as HttpInterceptorFn[];
+        return normalizedInterceptors.length
+          ? [withInterceptors(normalizedInterceptors)]
+          : [];
+      },
+      multi: true,
+      deps: [HTTP_INTERCEPTOR_FNS],
+    },
+    {
+      provide: HTTP_FEATURES,
+      useFactory: (
+        interceptors: ArrayOrNullableOne<HttpInterceptor>[]
+      ): HttpFeature[] => {
+        const normalizedInterceptors = [interceptors]
+          .flat(Number.MAX_SAFE_INTEGER)
+          .filter(Boolean) as HttpInterceptor[];
+        return normalizedInterceptors.length
+          ? [withLegacyInterceptors(normalizedInterceptors)]
+          : [];
+      },
+      multi: true,
+      deps: [HTTP_LEGACY_INTERCEPTORS],
+    },
+    {
+      provide: HTTP_FEATURES,
+      useFactory: (backend: HttpBackend | null | undefined): HttpFeature[] => {
+        return backend
+          ? [
+              {
+                kind: HttpFeatureKind.Backend,
+                value: backend,
+              },
+            ]
+          : [];
+      },
+      multi: true,
+      deps: [[new Optional(), HTTP_BACKEND]],
+    },
+    {
+      provide: HTTP_FEATURES,
+      useFactory: (
+        interceptor: HttpInterceptorFn | null | undefined
+      ): HttpFeature[] => {
+        return interceptor
+          ? [
+              {
+                kind: HttpFeatureKind.XsrfProtection,
+                value: interceptor,
+              },
+            ]
+          : [];
+      },
+      multi: true,
+      deps: [[new Optional(), HTTP_XSRF_PROTECTION]],
+    },
+    {
+      provide: HTTP_FEATURES,
+      useValue: features,
+      multi: true,
+    },
+    {
+      provide: HttpClient,
+      useFactory: (features: ArrayOrNullableOne<HttpFeature>[]) => {
+        const normalizedFeatures = [features]
+          .flat(Number.MAX_SAFE_INTEGER)
+          .filter(Boolean) as HttpFeature[];
+        return new HttpClient(...normalizedFeatures);
+      },
+      deps: [HTTP_FEATURES],
+    },
+  ];
 }
diff --git a/src/interceptor/auth.interceptor.spec.ts b/src/interceptor/auth.interceptor.spec.ts
index 7b51fb1..1f25c88 100644
--- a/src/interceptor/auth.interceptor.spec.ts
+++ b/src/interceptor/auth.interceptor.spec.ts
@@ -1,16 +1,12 @@
 import { TestBed } from '@/testing';
 import {
-  HTTP_INTERCEPTORS,
-  HttpClient,
-  provideHttpClient,
-  withInterceptors,
-  withInterceptorsFromDi,
-} from '@ngify/http';
-import {
-  HttpTestingController,
+  HTTP_CLIENT_TEST_CONTROLLER,
   provideHttpClientTesting,
-} from '@ngify/http/testing';
-import { firstValueFrom } from 'rxjs';
+} from '@/testing';
+import { HttpClient } from '@ngify/http';
+import type { HttpTestingController } from '@ngify/http/testing';
+import { HTTP_INTERCEPTOR_FNS, HTTP_LEGACY_INTERCEPTORS } from 'oidc-client-rx';
+import { ReplaySubject, firstValueFrom, share } from 'rxjs';
 import { vi } from 'vitest';
 import { AuthStateService } from '../auth-state/auth-state.service';
 import { ConfigurationService } from '../config/config.service';
@@ -33,20 +29,19 @@ describe('AuthHttpInterceptor', () => {
         providers: [
           ClosestMatchingRouteService,
           {
-            provide: HTTP_INTERCEPTORS,
+            provide: HTTP_LEGACY_INTERCEPTORS,
             useClass: AuthInterceptor,
             multi: true,
           },
           mockProvider(AuthStateService),
           mockProvider(LoggerService),
           mockProvider(ConfigurationService),
-          provideHttpClient(withInterceptorsFromDi()),
           provideHttpClientTesting(),
         ],
       });
 
       httpClient = TestBed.inject(HttpClient);
-      httpTestingController = TestBed.inject(HttpTestingController);
+      httpTestingController = TestBed.inject(HTTP_CLIENT_TEST_CONTROLLER);
       configurationService = TestBed.inject(ConfigurationService);
       authStateService = TestBed.inject(AuthStateService);
       closestMatchingRouteService = TestBed.inject(ClosestMatchingRouteService);
@@ -64,8 +59,12 @@ describe('AuthHttpInterceptor', () => {
     beforeEach(() => {
       TestBed.configureTestingModule({
         providers: [
+          {
+            provide: HTTP_INTERCEPTOR_FNS,
+            useFactory: authInterceptor,
+            multi: true,
+          },
           ClosestMatchingRouteService,
-          provideHttpClient(withInterceptors([authInterceptor()])),
           provideHttpClientTesting(),
           mockProvider(AuthStateService),
           mockProvider(LoggerService),
@@ -74,7 +73,7 @@ describe('AuthHttpInterceptor', () => {
       });
 
       httpClient = TestBed.inject(HttpClient);
-      httpTestingController = TestBed.inject(HttpTestingController);
+      httpTestingController = TestBed.inject(HTTP_CLIENT_TEST_CONTROLLER);
       configurationService = TestBed.inject(ConfigurationService);
       authStateService = TestBed.inject(AuthStateService);
       closestMatchingRouteService = TestBed.inject(ClosestMatchingRouteService);
@@ -106,14 +105,27 @@ describe('AuthHttpInterceptor', () => {
         true
       );
 
-      const response = await firstValueFrom(httpClient.get(actionUrl));
-      expect(response).toBeTruthy();
+      const test$ = httpClient.get(actionUrl).pipe(
+        share({
+          connector: () => new ReplaySubject(),
+          resetOnComplete: false,
+          resetOnError: false,
+          resetOnRefCountZero: false,
+        })
+      );
+
+      test$.subscribe();
 
       const httpRequest = httpTestingController.expectOne(actionUrl);
 
+      httpRequest.flush('something');
+
       expect(httpRequest.request.headers.has('Authorization')).toEqual(true);
 
-      httpRequest.flush('something');
+      const response = await firstValueFrom(test$);
+
+      expect(response).toBeTruthy();
+
       httpTestingController.verify();
     });
 
@@ -132,14 +144,26 @@ describe('AuthHttpInterceptor', () => {
         true
       );
 
-      const response = await firstValueFrom(httpClient.get(actionUrl));
-      expect(response).toBeTruthy();
+      const test$ = httpClient.get(actionUrl).pipe(
+        share({
+          connector: () => new ReplaySubject(),
+          resetOnComplete: false,
+          resetOnError: false,
+          resetOnRefCountZero: false,
+        })
+      );
+
+      test$.subscribe();
 
       const httpRequest = httpTestingController.expectOne(actionUrl);
 
       expect(httpRequest.request.headers.has('Authorization')).toEqual(false);
 
       httpRequest.flush('something');
+
+      const response = await firstValueFrom(test$);
+      expect(response).toBeTruthy();
+
       httpTestingController.verify();
     });
 
@@ -159,15 +183,27 @@ describe('AuthHttpInterceptor', () => {
       vi.spyOn(authStateService, 'getAccessToken').mockReturnValue(
         'thisIsAToken'
       );
+      const test$ = httpClient.get(actionUrl).pipe(
+        share({
+          connector: () => new ReplaySubject(),
+          resetOnComplete: false,
+          resetOnError: false,
+          resetOnRefCountZero: false,
+        })
+      );
 
-      const response = await firstValueFrom(httpClient.get(actionUrl));
-      expect(response).toBeTruthy();
+      test$.subscribe();
 
       const httpRequest = httpTestingController.expectOne(actionUrl);
 
       expect(httpRequest.request.headers.has('Authorization')).toEqual(false);
 
       httpRequest.flush('something');
+
+      const response = await firstValueFrom(test$);
+
+      expect(response).toBeTruthy();
+
       httpTestingController.verify();
     });
 
@@ -185,14 +221,26 @@ describe('AuthHttpInterceptor', () => {
         true
       );
 
-      const response = await firstValueFrom(httpClient.get(actionUrl));
-      expect(response).toBeTruthy();
+      const test$ = httpClient.get(actionUrl).pipe(
+        share({
+          connector: () => new ReplaySubject(),
+          resetOnComplete: false,
+          resetOnError: false,
+          resetOnRefCountZero: false,
+        })
+      );
+
+      test$.subscribe();
 
       const httpRequest = httpTestingController.expectOne(actionUrl);
 
       expect(httpRequest.request.headers.has('Authorization')).toEqual(false);
 
       httpRequest.flush('something');
+
+      const response = await firstValueFrom(test$);
+      expect(response).toBeTruthy();
+
       httpTestingController.verify();
     });
 
@@ -211,14 +259,27 @@ describe('AuthHttpInterceptor', () => {
       );
       vi.spyOn(authStateService, 'getAccessToken').mockReturnValue('');
 
-      const response = await firstValueFrom(httpClient.get(actionUrl));
-      expect(response).toBeTruthy();
+      const test$ = httpClient.get(actionUrl).pipe(
+        share({
+          connector: () => new ReplaySubject(),
+          resetOnComplete: false,
+          resetOnError: false,
+          resetOnRefCountZero: false,
+        })
+      );
+
+      test$.subscribe();
 
       const httpRequest = httpTestingController.expectOne(actionUrl);
 
       expect(httpRequest.request.headers.has('Authorization')).toEqual(false);
 
       httpRequest.flush('something');
+
+      const response = await firstValueFrom(test$);
+
+      expect(response).toBeTruthy();
+
       httpTestingController.verify();
     });
 
@@ -229,14 +290,26 @@ describe('AuthHttpInterceptor', () => {
         false
       );
 
-      const response = await firstValueFrom(httpClient.get(actionUrl));
-      expect(response).toBeTruthy();
+      const test$ = httpClient.get(actionUrl).pipe(
+        share({
+          connector: () => new ReplaySubject(),
+          resetOnComplete: false,
+          resetOnError: false,
+          resetOnRefCountZero: false,
+        })
+      );
+
+      test$.subscribe();
 
       const httpRequest = httpTestingController.expectOne(actionUrl);
 
       expect(httpRequest.request.headers.has('Authorization')).toEqual(false);
 
       httpRequest.flush('something');
+
+      const response = await firstValueFrom(test$);
+      expect(response).toBeTruthy();
+
       httpTestingController.verify();
     });
 
@@ -260,14 +333,25 @@ describe('AuthHttpInterceptor', () => {
         matchingConfig: null,
       });
 
-      const response = await firstValueFrom(httpClient.get(actionUrl));
-      expect(response).toBeTruthy();
+      const test$ = httpClient.get(actionUrl).pipe(
+        share({
+          connector: () => new ReplaySubject(),
+          resetOnComplete: false,
+          resetOnError: false,
+          resetOnRefCountZero: false,
+        })
+      );
+
+      test$.subscribe();
 
       const httpRequest = httpTestingController.expectOne(actionUrl);
 
       expect(httpRequest.request.headers.has('Authorization')).toEqual(false);
 
       httpRequest.flush('something');
+
+      const response = await firstValueFrom(test$);
+      expect(response).toBeTruthy();
       httpTestingController.verify();
     });
 
@@ -286,11 +370,25 @@ describe('AuthHttpInterceptor', () => {
         true
       );
 
-      let response = await firstValueFrom(httpClient.get(actionUrl));
-      expect(response).toBeTruthy();
+      const test$ = httpClient.get(actionUrl).pipe(
+        share({
+          connector: () => new ReplaySubject(),
+          resetOnComplete: false,
+          resetOnError: false,
+          resetOnRefCountZero: false,
+        })
+      );
+      const test2$ = httpClient.get(actionUrl2).pipe(
+        share({
+          connector: () => new ReplaySubject(),
+          resetOnComplete: false,
+          resetOnError: false,
+          resetOnRefCountZero: false,
+        })
+      );
 
-      response = await firstValueFrom(httpClient.get(actionUrl2));
-      expect(response).toBeTruthy();
+      test$.subscribe();
+      test2$.subscribe();
 
       const httpRequest = httpTestingController.expectOne(actionUrl);
 
@@ -302,6 +400,14 @@ describe('AuthHttpInterceptor', () => {
 
       httpRequest.flush('something');
       httpRequest2.flush('something');
+
+      const [response, response2] = await Promise.all([
+        firstValueFrom(test$),
+        firstValueFrom(test2$),
+      ]);
+      expect(response).toBeTruthy();
+      expect(response2).toBeTruthy();
+
       httpTestingController.verify();
     });
   }
diff --git a/src/interceptor/auth.interceptor.ts b/src/interceptor/auth.interceptor.ts
index fee8365..6e5d009 100644
--- a/src/interceptor/auth.interceptor.ts
+++ b/src/interceptor/auth.interceptor.ts
@@ -40,13 +40,14 @@ export class AuthInterceptor implements HttpInterceptor {
 }
 
 export function authInterceptor(): HttpInterceptorFn {
+  const deps = {
+    configurationService: inject(ConfigurationService),
+    authStateService: inject(AuthStateService),
+    closestMatchingRouteService: inject(ClosestMatchingRouteService),
+    loggerService: inject(LoggerService),
+  };
   return (req, next) => {
-    return interceptRequest(req, next, {
-      configurationService: inject(ConfigurationService),
-      authStateService: inject(AuthStateService),
-      closestMatchingRouteService: inject(ClosestMatchingRouteService),
-      loggerService: inject(LoggerService),
-    });
+    return interceptRequest(req, next, deps);
   };
 }
 
diff --git a/src/testing/http.ts b/src/testing/http.ts
index c94b2b9..4acf744 100644
--- a/src/testing/http.ts
+++ b/src/testing/http.ts
@@ -1,9 +1,21 @@
-import { HttpFeatureKind } from '@ngify/http';
 import { HttpClientTestingBackend } from '@ngify/http/testing';
+import { InjectionToken, type Provider } from 'injection-js';
+import { HTTP_BACKEND, provideHttpClient } from 'oidc-client-rx';
 
-export function provideHttpClientTesting() {
-  return {
-    provide: HttpFeatureKind.Backend,
-    useClass: HttpClientTestingBackend,
-  };
+export const HTTP_CLIENT_TEST_CONTROLLER =
+  new InjectionToken<HttpClientTestingBackend>('HTTP_CLIENT_TEST_CONTROLLER');
+
+export function provideHttpClientTesting(): Provider[] {
+  const backend = new HttpClientTestingBackend();
+  return [
+    {
+      provide: HTTP_CLIENT_TEST_CONTROLLER,
+      useValue: backend,
+    },
+    {
+      provide: HTTP_BACKEND,
+      useValue: backend,
+    },
+    ...provideHttpClient(),
+  ];
 }
diff --git a/src/testing/index.ts b/src/testing/index.ts
index 48ebc61..c458acb 100644
--- a/src/testing/index.ts
+++ b/src/testing/index.ts
@@ -6,4 +6,4 @@ export {
 } from './spy';
 export { createRetriableStream } from './create-retriable-stream.helper';
 export { MockRouter, mockRouterProvider } from './router';
-export { provideHttpClientTesting } from './http';
+export { provideHttpClientTesting, HTTP_CLIENT_TEST_CONTROLLER } from './http';
diff --git a/src/utils/types/index.ts b/src/utils/types/index.ts
new file mode 100644
index 0000000..a572687
--- /dev/null
+++ b/src/utils/types/index.ts
@@ -0,0 +1,3 @@
+export type ArrayOrOne<T> = T[] | T;
+
+export type ArrayOrNullableOne<T> = T[] | T | null | undefined;