I will be using the endpoints from my Abp 9.3.5 MVC Tiered project in an Abp 9.3.5 MVC Single layer project. Is it possible to add the HttpApi.Client layer from the Tiered project to the Single Layer project? Can I use the endpoints here in the same way I used them in the Web layer of the Tiered project? What should I pay attention to in this regard? I would appreciate it if you could also answer how to make an authorized request.
12 Answer(s)
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- Solution
- Yes, you can reuse the HttpApi.Client from your MVC Tiered solution in another ABP application (your MVC Single Layer app). That is exactly what ABP’s client proxy system is designed for.
- What to add to the Single Layer app:
- Reference the Tiered app’s HttpApi.Client project (Acme.YourApp.HttpApi.Client) and the Application.Contracts project if you want to use the service interfaces in your own Application layer.
- In the Single Layer app’s main module (typically the Web module), depend on the HttpApi.Client module:
[DependsOn( typeof(AbpHttpClientIdentityModelModule), // needed if you authenticate with OpenID Connect/IdentityModel typeof(YourAppHttpApiClientModule) // from the Tiered app )] public class YourSingleWebModule : AbpModule { public override void ConfigureServices(ServiceConfigurationContext context) { // Remote service base URL Configure<AbpRemoteServiceOptions>(options => { options.RemoteServices.Default = new RemoteServiceConfiguration("https://your-tiered-api-root"); }); } }- Configure appsettings.json in the Single Layer app:
{ "RemoteServices": { "Default": { "BaseUrl": "https://your-tiered-api-root" } } }- If your HttpApi.Client module uses a custom remote service name, configure that key instead of Default. The key must match the remote service name used during proxy registration.- Use the endpoints the same way: inject the application service interfaces (from Application.Contracts) and call them. The client proxies will translate your calls into HTTP requests automatically.
public class MyPageModel : PageModel { private readonly IBookAppService _bookAppService; public MyPageModel(IBookAppService bookAppService) { _bookAppService = bookAppService; } public async Task OnGetAsync() { var result = await _bookAppService.GetListAsync(); // use result.Items... } }- Authorized requests (token handling):
- If your Tiered app uses OpenIddict/IdentityServer and the Single Layer app must call it with a user/access token, add IdentityModel-based authentication:
- Add package Volo.Abp.Http.Client.IdentityModel to the Single Layer app and depend on AbpHttpClientIdentityModelModule (as shown above).
- Configure IdentityModel authentication in appsettings.json (Resource Owner Password or Client Credentials flow, depending on your scenario): Resource Owner Password (acting on behalf of a user):
- If your Tiered app uses OpenIddict/IdentityServer and the Single Layer app must call it with a user/access token, add IdentityModel-based authentication:
{ "IdentityClients": { "Default": { "Authority": "https://your-auth-server", "GrantType": "password", "ClientId": "YourClientId", "ClientSecret": "YourClientSecret", "UserName": "admin", "UserPassword": "1q2w3E*", "Scope": "openid profile email roles YourApp" } } }Client Credentials (service-to-service):{ "IdentityClients": { "Default": { "Authority": "https://your-auth-server", "GrantType": "client_credentials", "ClientId": "YourMachineClient", "ClientSecret": "YourClientSecret", "Scope": "YourApp" } } }3) With AbpHttpClientIdentityModelModule added, ABP automatically obtains tokens and sends authorized requests for all configured client proxies.- Alternatively, if you sign users in to the Single Layer MVC app with OIDC, you can forward the current user’s access token to the remote service by implementing IRemoteServiceHttpClientAuthenticator and setting the Authorization header from the current user’s token. Example:
using Microsoft.AspNetCore.Authentication; using Microsoft.AspNetCore.Http; using Volo.Abp.DependencyInjection; using Volo.Abp.Http.Client.Authentication; [Dependency(ReplaceServices = true)] [ExposeServices(typeof(IRemoteServiceHttpClientAuthenticator))] public class CurrentUserRemoteServiceAuthenticator : IRemoteServiceHttpClientAuthenticator, ITransientDependency { private readonly IHttpContextAccessor _httpContextAccessor; public CurrentUserRemoteServiceAuthenticator(IHttpContextAccessor httpContextAccessor) { _httpContextAccessor = httpContextAccessor; } public async Task Authenticate(RemoteServiceHttpClientAuthenticateContext context) { var httpContext = _httpContextAccessor.HttpContext; if (httpContext == null) return; var accessToken = await httpContext.GetTokenAsync("access_token"); if (!string.IsNullOrWhiteSpace(accessToken)) { context.Request.Headers.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", accessToken); } } }- Things to pay attention to:
- RemoteServices name: Ensure the name used in AddHttpClientProxies/AddStaticHttpClientProxies matches your RemoteServices configuration key. If you keep “Default”, configure RemoteServices:Default.
- CORS and URLs: Use the public, reachable base URL of your Tiered API Host. If running behind a gateway/reverse proxy, point to that gateway.
- Permissions: If endpoints are authorized by permissions, ensure the calling principal (user or client) has those permissions. For ROPC or Client Credentials, grant the needed permissions/roles/scopes.
- Multi-tenancy: If using multi-tenancy, set current tenant when needed; ABP passes tenant info automatically if the token includes it. Otherwise configure X-Tenant-ID header when required.
- Static vs dynamic proxies: Dynamic proxies work out-of-the-box with the HttpApi.Client module. Static proxies require abp generate-proxy and keeping them in sync after API changes.
- Sources
- GitHub (sample and patterns around using client proxies and IdentityModel):
- https://github.com/abpframework/abp
- Community guide showing adding HttpApi.Client into another client and authenticating requests:
- https://github.com/abpframework/abp-samples/tree/master/MAUI-OpenId (linked in article)
- ABP Support answer explaining HttpApi.Client reuse between apps/modules:
- https://abp.io/support/questions/2785
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hi
Http.Client is the client proxies, soi you can add it to your single project.
See https://abp.io/docs/latest/framework/api-development/dynamic-csharp-clients https://abp.io/docs/latest/framework/api-development/static-csharp-clients
However, the client proxy may require authentication to access the remote services.
What is the remote service authentication method?
Thanks.
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Hello, You may recall that I previously had a question regarding the operation of the XCore and XAuth projects for a different issue. You were helpful there. (Ref: Configuration-of-authentication-and-authorization-server-and-client-projects ) In this question, there are actually two single-layer projects. One will use XAuth for access, and the other is a public project. I wanted to use the services within XCore in these two single-layer projects.
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hi
there are actually two single-layer projects.
How are these two projects authenticated? Redirect to XAuth login page to complete the login(
code flow)?Thanks
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Hello, I'm trying to do exactly that. In the XCore project from my previous question, the Web layer passed to the Host layer and then to the XAuth project. These two projects (XSingle1, XSingle2) provide authorization with XAuth and obtain tokens to work within themselves. So far, I've connected using the Dynamic Proxy method. However, I'm confused about the authorization. In the XSingle1 project, user A needs to continuously send and receive requests to the XCore (Host) project. Here, a user-specific XCore token is required. Is there an easy way to do this?
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hi
The
client proxieswill try to obtain the current access token from theIAbpAccessTokenProviderand then request the API website.If your current website uses code flow to obtain a token, the token will be stored in cookies. And
IAbpAccessTokenProviderwill get and use it.
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How can I use IAbpAccessTokenProvider for HttpContext ?
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hi
Has your project depended on
AbpHttpClientIdentityModelWebModule?Can you share the source code?
Thanks.
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Hi
I used
AbpHttpClientIdentityModelWebModuleas you said thenIAbpAccessTokenProviderwas changed as below.
The null value is likely due to me disabling cookies in Authentication. However, when I enable cookies, even though authentication is successful, it appears as if the session has never been opened on the client side. The login button remains on the screen. When I check /api/abp/application-configuration, it appears as unauthenticated.
private void ConfigureAuthentication(ServiceConfigurationContext context, IConfiguration configuration) { //context.Services.ForwardIdentityAuthenticationForBearer(OpenIddictValidationAspNetCoreDefaults.AuthenticationScheme); context.Services.AddAuthentication() //(options => //{ // options.DefaultScheme = "Cookies"; // options.DefaultChallengeScheme = "oidc"; //}) //.AddCookie("Cookies", options => //{ // options.ExpireTimeSpan = TimeSpan.FromDays(365); // options.CheckTokenExpiration(); //}) .AddAbpOpenIdConnect("oidc", "XCore", options => { options.Authority = configuration["XAuthAuthServer:Authority"]; options.RequireHttpsMetadata = configuration.GetValue<bool>("XAuthAuthServer:RequireHttpsMetadata"); options.ResponseType = OpenIdConnectResponseType.CodeIdToken; options.ClientId = configuration["XAuthAuthServer:ClientId"]; options.ClientSecret = configuration["XAuthAuthServer:ClientSecret"]; options.UsePkce = true; options.SaveTokens = true; options.GetClaimsFromUserInfoEndpoint = true; options.Scope.Add("roles"); options.Scope.Add("email"); options.Scope.Add("phone"); options.Scope.Add("XCore"); //options.SignInScheme = IdentityConstants.ExternalScheme; }); context.Services.Configure<AbpClaimsPrincipalFactoryOptions>(options => { options.IsDynamicClaimsEnabled = false; }); }To start from the beginning, I want to use XCore's ApplicationContracts within XSingle (Single non-tiered and with DynamicProxy).
How can the XSingle application automatically obtain a token (for ClientId) from the XCore application and automatically add it to every request sent from XSingle to the interfaces in XCore?
Or
Can it generate and provide a user-based token specific to the XSingle user?
By the way, identity verification is the XAuth application for each application.
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hi
You should be able to get an access token after
oidcis signed in.Can you confirm this first?
Thanks.
//(options => //{ // options.DefaultScheme = "Cookies"; // options.DefaultChallengeScheme = "oidc"; //}) //.AddCookie("Cookies", options => //{ // options.ExpireTimeSpan = TimeSpan.FromDays(365); // options.CheckTokenExpiration(); //}) .AddAbpOpenIdConnect("oidc", "XCore", options => { options.Authority = configuration["XAuthAuthServer:Authority"]; options.RequireHttpsMetadata = configuration.GetValue<bool>("XAuthAuthServer:RequireHttpsMetadata"); options.ResponseType = OpenIdConnectResponseType.CodeIdToken; options.ClientId = configuration["XAuthAuthServer:ClientId"]; options.ClientSecret = configuration["XAuthAuthServer:ClientSecret"]; options.UsePkce = true; options.SaveTokens = true; options.GetClaimsFromUserInfoEndpoint = true; options.Scope.Add("roles"); options.Scope.Add("email"); options.Scope.Add("phone"); options.Scope.Add("XCore"); //options.SignInScheme = IdentityConstants.ExternalScheme; }); -
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Hi
You can see as below images.
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hi
Can you share a test project to show the problem?
I will download and debug it.
liming.ma@volosoft.com
Thanks
