org.apache.hc.client5.http.async

## Interface HttpAsyncClient

- All Known Implementing Classes:
    CloseableHttpAsyncClient, InternalH2AsyncClient, InternalHttpAsyncClient, MinimalH2AsyncClient, MinimalHttpAsyncClient

      public interface HttpAsyncClient

  This interface represents only the most basic contract for HTTP request execution. It imposes no restrictions or particular details on the request execution process and leaves the specifics of state management, authentication and redirect handling up to individual implementations.
  Since:
    4.0

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `<T> Future<T>` | `execute(AsyncRequestProducer requestProducer, AsyncResponseConsumer<T> responseConsumer, HandlerFactory<AsyncPushConsumer> pushHandlerFactory, HttpContext context, FutureCallback<T> callback)` Initiates asynchronous HTTP request execution using the given context.

- - ### Method Detail

    - #### execute

          <T> Future<T> execute(AsyncRequestProducer requestProducer,
                                AsyncResponseConsumer<T> responseConsumer,
                                HandlerFactory<AsyncPushConsumer> pushHandlerFactory,
                                HttpContext context,
                                FutureCallback<T> callback)

      Initiates asynchronous HTTP request execution using the given context.

      The request producer passed to this method will be used to generate a request message and stream out its content without buffering it in memory. The response consumer passed to this method will be used to process a response message without buffering its content in memory.

      Please note it may be unsafe to interact with the context instance while the request is still being executed.

      Type Parameters:
        `T` - the result type of request execution.
      Parameters:
        `requestProducer` - request producer callback.
        `responseConsumer` - response consumer callback.
        `pushHandlerFactory` - the push handler factory. Optional and may be `null`.
        `context` - HTTP context. Optional and may be `null`.
        `callback` - future callback. Optional and may be `null`.
      Returns:
        future representing pending completion of the operation.

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