Allow overriding creating requests. Fixes gh-423.

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/loadbalancer/FeignBlockingLoadBalancerClient.java

@@ -72,12 +72,15 @@ public class FeignBlockingLoadBalancerClient implements Client {
 		}
 		String reconstructedUrl = loadBalancerClient.reconstructURI(instance, originalUri)
 				.toString();
-		Request newRequest = Request.create(request.httpMethod(), reconstructedUrl,
-				request.headers(), request.body(), request.charset(),
-				request.requestTemplate());
+		Request newRequest = buildRequest(request, reconstructedUrl);
 		return delegate.execute(newRequest, options);
 	}
 
+	protected Request buildRequest(Request request, String reconstructedUrl) {
+		return Request.create(request.httpMethod(), reconstructedUrl, request.headers(),
+				request.body(), request.charset(), request.requestTemplate());
+	}
+
 	// Visible for Sleuth instrumentation
 	public Client getDelegate() {
 		return delegate;

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/loadbalancer/RetryableFeignBlockingLoadBalancerClient.java

@@ -95,9 +95,7 @@ public class RetryableFeignBlockingLoadBalancerClient implements Client {
 					}
 					String reconstructedUrl = loadBalancerClient
 							.reconstructURI(serviceInstance, originalUri).toString();
-					feignRequest = Request.create(request.httpMethod(), reconstructedUrl,
-							request.headers(), request.body(), request.charset(),
-							request.requestTemplate());
+					feignRequest = buildRequest(request, reconstructedUrl);
 				}
 			}
 			if (feignRequest == null) {
@@ -127,6 +125,11 @@ public class RetryableFeignBlockingLoadBalancerClient implements Client {
 		});
 	}
 
+	protected Request buildRequest(Request request, String reconstructedUrl) {
+		return Request.create(request.httpMethod(), reconstructedUrl, request.headers(),
+				request.body(), request.charset(), request.requestTemplate());
+	}
+
 	private RetryTemplate buildRetryTemplate(String serviceId, Request request,
 			LoadBalancedRetryPolicy retryPolicy) {
 		RetryTemplate retryTemplate = new RetryTemplate();