Adding ip/resolver/basic_http

ip/resolver/basic_http/service.go

@@ -0,0 +1,42 @@
+package basic_http
+
+import (
+	"io"
+	"net"
+	"net/http"
+	"strings"
+)
+
+type Service struct {
+	ServiceName string
+	Url         string
+	Headers     http.Header
+}
+
+func (s Service) Name() string {
+	return s.ServiceName
+}
+
+func (s Service) Lookup() (net.IP, error) {
+	req, err := http.NewRequest("GET", s.Url, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	req.Header = s.Headers
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return nil, err
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	// Trim spaces and stuff.
+	ip_str := strings.TrimSpace(string(body))
+
+	return net.ParseIP(ip_str), err
+}