Apply resources after application HttpClient mapper

Closes gh-27749

spring-web/src/main/java/org/springframework/http/client/reactive/ReactorClientHttpConnector.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -73,18 +73,21 @@ public ReactorClientHttpConnector() {
 	 * @since 5.1
 	 */
 	public ReactorClientHttpConnector(ReactorResourceFactory factory, Function<HttpClient, HttpClient> mapper) {
-		this.httpClient = defaultInitializer.andThen(mapper).apply(initHttpClient(factory));
+		ConnectionProvider provider = factory.getConnectionProvider();
+		Assert.notNull(provider, "No ConnectionProvider: is ReactorResourceFactory not initialized yet?");
+		this.httpClient = defaultInitializer.andThen(mapper).andThen(applyLoopResources(factory))
+				.apply(HttpClient.create(provider));
 	}
 
-	@SuppressWarnings("deprecation")
-	private static HttpClient initHttpClient(ReactorResourceFactory resourceFactory) {
-		ConnectionProvider provider = resourceFactory.getConnectionProvider();
-		LoopResources resources = resourceFactory.getLoopResources();
-		Assert.notNull(provider, "No ConnectionProvider: is ReactorResourceFactory not initialized yet?");
-		Assert.notNull(resources, "No LoopResources: is ReactorResourceFactory not initialized yet?");
-		return HttpClient.create(provider).tcpConfiguration(tcpClient -> tcpClient.runOn(resources));
+	private static Function<HttpClient, HttpClient> applyLoopResources(ReactorResourceFactory factory) {
+		return httpClient -> {
+			LoopResources resources = factory.getLoopResources();
+			Assert.notNull(resources, "No LoopResources: is ReactorResourceFactory not initialized yet?");
+			return httpClient.runOn(resources);
+		};
 	}
 
+
 	/**
 	 * Constructor with a pre-configured {@code HttpClient} instance.
 	 * @param httpClient the client to use