Make some debug output

Author: Fangliding

app/dns/nameserver_doh.go

@@ -6,6 +6,7 @@ import (
 	"crypto/tls"
 	"fmt"
 	"io"
+	golog "log"
 	"net/http"
 	"net/url"
 	"strings"
@@ -276,6 +277,7 @@ func (s *DoHNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 func (s *DoHNameServer) dohHTTPSContext(ctx context.Context, b []byte) ([]byte, error) {
 	body := bytes.NewBuffer(b)
 	req, err := http.NewRequest("POST", s.dohURL, body)
+	golog.Println("request body size: ", len(body.Bytes()))
 	if err != nil {
 		return nil, err
 	}
@@ -287,10 +289,13 @@ func (s *DoHNameServer) dohHTTPSContext(ctx context.Context, b []byte) ([]byte,
 
 	hc := s.httpClient
 
+	golog.Println("taking request")
 	resp, err := hc.Do(req.WithContext(ctx))
 	if err != nil {
+		golog.Println("err req: ", err)
 		return nil, err
 	}
+	golog.Println("req done")
 
 	defer resp.Body.Close()
 	if resp.StatusCode != http.StatusOK {