Removing multiple successive slashes

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/zuul/filters/route/SimpleHostRoutingFilter.java

@@ -241,7 +241,7 @@ public class SimpleHostRoutingFilter extends ZuulFilter {
 				requestEntity);
 		URL host = RequestContext.getCurrentContext().getRouteHost();
 		HttpHost httpHost = getHttpHost(host);
-		uri = StringUtils.cleanPath(host.getPath() + uri);
+		uri = StringUtils.cleanPath((host.getPath() + uri).replaceAll("/{2,}", "/"));
 		HttpRequest httpRequest;
 		switch (verb.toUpperCase()) {
 		case "POST":

spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/SampleZuulProxyApplicationTests.java

@@ -16,13 +16,11 @@
 
 package org.springframework.cloud.netflix.zuul;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
-
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import javax.servlet.http.HttpServletRequest;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -64,6 +62,9 @@ import com.netflix.loadbalancer.ServerList;
 import com.netflix.zuul.ZuulFilter;
 import com.netflix.zuul.context.RequestContext;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
 @RunWith(SpringJUnit4ClassRunner.class)
 @SpringApplicationConfiguration(classes = SampleZuulProxyApplication.class)
 @WebAppConfiguration
@@ -189,6 +190,17 @@ public class SampleZuulProxyApplicationTests {
 	}
 
 	@Test
+	public void simpleHostRouteWithTrailingSlash() {
+		routes.addRoute("/self/**", "http://localhost:" + this.port + "/");
+		this.endpoint.reset();
+		ResponseEntity<String> result = new TestRestTemplate().exchange(
+				"http://localhost:" + this.port + "/self/trailing-slash",
+				HttpMethod.GET, new HttpEntity<>((Void) null), String.class);
+		assertEquals(HttpStatus.OK, result.getStatusCode());
+		assertEquals("/trailing-slash", result.getBody());
+	}
+
+	@Test
 	public void ribbonCommandFactoryOverridden() {
 		assertTrue("ribbonCommandFactory not a MyRibbonCommandFactory",
 				ribbonCommandFactory instanceof SampleZuulProxyApplication.MyRibbonCommandFactory);
@@ -246,6 +258,11 @@ class SampleZuulProxyApplication {
 		return "Hello space";
 	}
 
+	@RequestMapping(value = "/trailing-slash")
+	public String trailingSlash(HttpServletRequest request) {
+		return request.getRequestURI();
+	}
+
 	@Bean
 	public RibbonCommandFactory ribbonCommandFactory(SpringClientFactory clientFactory) {
 		return new MyRibbonCommandFactory(clientFactory);