alphax_http 1.0.1

package:http Client bridge backed by AlphaXClient for Chopper, GraphQL HTTP, and injectable SDKs.

alphax_http

alphax_http lets a library that expects a package:http Client use AlphaX underneath it:

package:http consumer → AlphaXHttpClient → AlphaXClient → AlphaX transport

Use it for Chopper, GraphQL HTTP clients, generated clients that accept an injected http.Client, and ordinary SDKs built on package:http. Direct AlphaX users do not need this package.

Related packages:

• alphax for direct AlphaX usage;
• alphax_native for native Flutter transport selection;
• alphax_web for browser Fetch; and
• alphax_test for deterministic test transports.

Basic use

Create and configure AlphaX first, then wrap the long-lived client:

import 'package:alphax_http/alphax_http.dart';
import 'package:alphax_native/alphax_native.dart';

Future<void> main() async {
  final alpha = await createAlphaXClient();
  final httpClient = AlphaXHttpClient(alpha);
  try {
    final response = await httpClient.get(Uri.https('example.com', '/health'));
    print(response.statusCode);
  } finally {
    httpClient.close();
    await alpha.close();
  }
}

AlphaXHttpClient borrows alpha. Closing the adapter prevents new requests but does not close AlphaX or active response streams. The caller that created AlphaX owns it and must close it. Reuse one adapter and one underlying AlphaX client; the adapter does not create a client or transport per request.

The pure-Dart shape is the same when a caller supplies a transport directly:

final alpha = AlphaXClient(transport: MyTransport());
final httpClient = AlphaXHttpClient(alpha);

Chopper

Chopper services can receive the adapter through their normal http.Client injection point. The Chopper converter, interceptors, generated service, and typed response behavior remain Chopper responsibilities:

final alpha = await createAlphaXClient(
  middleware: <AlphaXMiddleware>[/* AlphaX policies */],
);
final httpClient = AlphaXHttpClient(alpha);
final chopper = ChopperClient(
  client: httpClient,
  services: <ChopperService>[UsersService.create()],
  converter: JsonConverter(),
);

Add chopper to the application that owns the service. It is not a runtime dependency of alphax_http and there is no alphax_chopper package.

Boundary and capability loss

The bridge implements package:http's maintained BaseClient.send contract. It maps standard methods, the original URI, headers, finalized request streams, known/unknown content length, multipart output, redirect follow/max settings, and streamed AlphaX responses to StreamedResponse. It does not re-encode a MultipartRequest or buffer every request/response.

The package:http contract cannot carry the complete AlphaX surface. Through this adapter, callers cannot observe AlphaX capabilities, actual protocol, protocol preference/requirement, fallback metadata, completion metrics, native file paths, progress callbacks, rich timeout phases, or rich cancellation reasons. Configure TLS, proxy, middleware, authentication, cookies, caching, retry, and resilience on the underlying AlphaX client before wrapping it.

followRedirects and maxRedirects map to AlphaX's follow/manual policy. The bridge does not weaken AlphaX credential stripping or provider TLS/proxy policy. Persistent-connection metadata, redirect-hop metadata, and reason phrases are not invented when AlphaX cannot authoritatively provide them. Non-standard HTTP methods are rejected because the AlphaX request contract has no corresponding method value.

AbortableRequest cancellation is bridged to an AlphaX cancellation token and is surfaced as RequestAbortedException. For a streamed request body, the token is available to the AlphaX transport; cancellation of the package:http body subscription itself is transport-dependent because BaseClient has no separate body-cancellation hook. Cancelling a response subscription closes the underlying stream when that transport supports stream cancellation. Client.close() prevents new sends but, because the AlphaX client is borrowed, does not cancel active AlphaX work or close the underlying client. http.Client does not expose AlphaX's request-level timeout phases; no timeout policy is installed by this adapter.

For protocol preferences, rich timeout/cancellation/progress controls, native file transfers, metrics, and transport-specific capabilities, use AlphaXClient directly.

The package is licensed under Apache-2.0.