dnscheck

type Consul struct {
	// contains filtered or unexported fields
}

type ConsulConfig struct {
	// Messages is the message constructor used to create DNS responses with
	// IPv4 and IPv6 IPs.
	Messages *dnsmsg.Constructor

	// ConsulKVURL is the URL to the Consul KV database.
	ConsulKVURL *url.URL

	// ConsulSessionURL is the URL to the Consul session API.
	ConsulSessionURL *url.URL

	// ErrColl is the error collector that is used to collect non-critical
	// errors.
	ErrColl errcoll.Interface

	// Domains are the lower-cased domain names used to detect DNS check requests.
	Domains []string

	// NodeLocation is the location of this server node.
	NodeLocation string

	// NodeName is the name of this server node.
	NodeName string

	// IPv4 are the IPv4 addresses to respond with to A requests.
	IPv4 []netip.Addr

	// IPv6 are the IPv6 addresses to respond with to AAAA requests.
	IPv6 []netip.Addr

	// TTL defines, for how long to keep the information about a single client.
	TTL time.Duration
}

type Interface interface {
	// Check saves the information about a client's request and returns the
	// appropriate response.  If req is not the right type of request or not
	// a request for the appropriate check domain, both resp and err are nil.
	//
	// All arguments must be non-nil.  req must contain one question, which
	// should be either an A or an AAAA one.
	Check(ctx context.Context, req *dns.Msg, ri *agd.RequestInfo) (resp *dns.Msg, err error)
}