HostDirectives

Extracts the hostname part of the Host request header value.

Rejects all requests with a host name different from the given ones.

Rejects all requests for whose host name the given predicate function returns false.

Rejects all requests with a host name that doesn't have a prefix matching the given regular expression. For all matching requests the prefix string matching the regex is extracted and passed to the inner route. If the regex contains a capturing group only the string matched by this group is extracted. If the regex contains more than one capturing group an IllegalArgumentException is thrown.