How to use

version

method

in

java.net.http.HttpClient

public Java11ReactiveHttpClientFactory(
    HttpClient httpClient, JsonFactory jsonFactory, ObjectMapper objectMapper,
    Java11ReactiveOptions options) {
  this.httpClient = httpClient;
  this.jsonFactory = jsonFactory;
  this.objectMapper = objectMapper;
  this.options = options;
  if(useHttp2(options) && HttpClient.Version.HTTP_2 != httpClient.version()){
    throw new IllegalArgumentException("Set correct version to httpClient");
  }
}

@Override
public void target(Target target) {
  if(httpClient.version() == HttpClient.Version.HTTP_2){
    //preliminary upgrade to h2s and setup TCP connection
    upgradeToH2c(target);
  }
}

@Override
public Mono<ReactiveHttpResponse> executeRequest(ReactiveHttpRequest request) {
  HttpRequest.Builder requestBuilder = HttpRequest.newBuilder(request.uri())
      .method(request.method().toUpperCase(), provideBody(request));
  setUpHeaders(request, requestBuilder);
  if(requestTimeout > 0){
    requestBuilder = requestBuilder.timeout(Duration.ofMillis(requestTimeout));
  }
  if(tryUseCompression){
    requestBuilder = requestBuilder.setHeader(ACCEPT_ENCODING_HEADER, GZIP);
  }
  Java11ReactiveHttpResponse.ReactiveBodySubscriber bodySubscriber = new Java11ReactiveHttpResponse.ReactiveBodySubscriber();
  CompletableFuture<HttpResponse<Void>> response = httpClient.sendAsync(
      requestBuilder.build(), fromSubscriber(bodySubscriber));
  return Mono.fromFuture(response)
      .<ReactiveHttpResponse>map(resp -> {
        if(!resp.version().equals(httpClient.version())){
          throw new IllegalArgumentException("Incorrect response version:"+resp.version());
        }
        return new Java11ReactiveHttpResponse(resp, bodySubscriber.content(),
            returnPublisherClass, returnActualClass,
            jsonFactory, responseReader);
      })
      .onErrorMap(ex -> ex instanceof CompletionException
               && ex.getCause() instanceof java.net.http.HttpTimeoutException,
          ReadTimeoutException::new);
}