public ReceivedResponse request(URI uri, Duration duration, Action<? super RequestSpec> action) throws Throwable { CountDownLatch latch = new CountDownLatch(1); AtomicReference<ExecResult<ReceivedResponse>> result = new AtomicReference<>(); try (ExecController execController = new DefaultExecController(2)) { execController .fork() .onComplete(e -> {}) .start( e -> { HttpClient.httpClient(UnpooledByteBufAllocator.DEFAULT, Integer.MAX_VALUE) .request(uri, action.prepend(s -> s.readTimeout(Duration.ofHours(1)))) .map( response -> { TypedData responseBody = response.getBody(); ByteBuf responseBodyBuffer = responseBody.getBuffer(); responseBodyBuffer = Unpooled.unreleasableBuffer(responseBodyBuffer.retain()); return new DefaultReceivedResponse( response.getStatus(), response.getHeaders(), new ByteBufBackedTypedData( responseBodyBuffer, responseBody.getContentType())); }) .connect( new Downstream<DefaultReceivedResponse>() { @Override public void success(DefaultReceivedResponse value) { result.set(ExecResult.of(Result.success(value))); latch.countDown(); } @Override public void error(Throwable throwable) { result.set(ExecResult.of(Result.error(throwable))); latch.countDown(); } @Override public void complete() { result.set(ExecResult.complete()); latch.countDown(); } }); }); try { if (!latch.await(duration.toNanos(), TimeUnit.NANOSECONDS)) { TemporalUnit unit = duration.getUnits().get(0); throw new IllegalStateException( "Request to " + uri + " took more than " + duration.get(unit) + " " + unit.toString() + " to complete"); } } catch (InterruptedException e) { throw Exceptions.uncheck(e); } return result.get().getValueOrThrow(); } }