Hands-On Microservices with Spring Boot and Spring Cloud

Routing based on the host header

Let's wrap up by testing the route setup based on the hostname used in the requests!

Normally, the hostname in the request is set automatically in the Host header by the HTTP client. When testing the edge server locally, the hostname will be localhost—that is not so useful when testing hostname-based routing. But we can cheat by specifying another hostname in the Host header in the call to the API. Let's see how this can be done:

1. To call for the i.feel.lucky hostname, use this code:

curl http://localhost:8080/headerrouting -H "Host: i.feel.lucky:8080"

2. Expect the response 200 OK. For the hostname im.a.teapot, use the following command:

curl http://localhost:8080/headerrouting -H "Host: im.a.teapot:8080" ...