Using wildcard hostnames

To provide flexibility, Janus allows you to specify hostnames with wildcards in the hosts field. Wildcard hostnames allow any matching Host header to satisfy the condition, and thus match a given API.

Wildcard hostnames must contain only one asterisk at the leftmost or rightmost label of the domain. Examples:

*.example.org would allow Host values such as a.example.com and x.y.example.com to match. example.* would allow Host values such as example.com and example.org to match. A complete example would look like this:

{
    "name": "My API",
    "hosts": ["*.example.com", "service.com"]
}

Which would allow the following requests to match this API:

GET / HTTP/1.1
Host: an.example.com

GET / HTTP/1.1
Host: service.com