GET request 411 error on zuul proxy for eureka clients.

After updating to Camden release, previously reported issue #1042 (411 content length required) is appearing again for GET requests.

I’ve following config on my small demo app. :

zuul:
  ignoredServices: '*'
  routes:
    rs: /api/rs/**
    httpbin: 
      path: /api/httpbin/**
      url: http://httpbin.org

I’ve 2 routes: eureka client rs and direct proxy for httpbin. Eureka client was throwing 411 error on GET requests. The difference was eureka client is setting unnecessary additional Transfer-Encoding: chunked header.

If we can’t remove this header, I think we can set Content-Length: 0, as it was handled previously.

My config app is running with simple default config (no custom RibbonCommandFactory):

@SpringBootApplication
@EnableZuulProxy
@EnableDiscoveryClient
public class Zuul411Application {

	public static void main(String[] args) {
		SpringApplication.run(Zuul411Application.class, args);
	}

}

p.s This issue is only apparent for certain network and ISPs.

[ryanjbaxter]

@beku8 please open a separate issue

[spencergibb]

Cherry-picked to master 62408af5eae2c02e3391146bf67082a85e3d8a62