fixup! [trackerscraper] Add custom DNS lookup function

config.go

@@ -92,7 +92,7 @@ type ClientConfig struct {
 	HTTPProxy func(*http.Request) (*url.URL, error)
 	// Takes a tracker's hostname and requests DNS A and AAAA records.
 	// Used in case DNS lookups require a special setup (i.e., dns-over-https)
-	TrackerIpFetcher func(*url.URL) ([]net.IP, error)
+	LookupTrackerIp func(*url.URL) ([]net.IP, error)
 	// HTTPUserAgent changes default UserAgent for HTTP requests
 	HTTPUserAgent string
 	// Updated occasionally to when there's been some changes to client

torrent.go

@@ -1577,9 +1577,9 @@ func (t *Torrent) startScrapingTracker(_url string) {
 			}
 		}
 		newAnnouncer := &trackerScraper{
-			u:         *u,
-			t:         t,
-			ipFetcher: t.cl.config.TrackerIpFetcher,
+			u:               *u,
+			t:               t,
+			lookupTrackerIp: t.cl.config.LookupTrackerIp,
 		}
 		go newAnnouncer.Run()
 		return newAnnouncer

tracker_scraper.go

@@ -18,10 +18,10 @@ import (
 // Announces a torrent to a tracker at regular intervals, when peers are
 // required.
 type trackerScraper struct {
-	u            url.URL
-	t            *Torrent
-	lastAnnounce trackerAnnounceResult
-	ipFetcher    func(*url.URL) ([]net.IP, error)
+	u               url.URL
+	t               *Torrent
+	lastAnnounce    trackerAnnounceResult
+	lookupTrackerIp func(*url.URL) ([]net.IP, error)
 }
 
 type torrentTrackerAnnouncer interface {
@@ -68,8 +68,8 @@ type trackerAnnounceResult struct {
 
 func (me *trackerScraper) getIp() (ip net.IP, err error) {
 	var ips []net.IP
-	if me.ipFetcher != nil {
-		ips, err = me.ipFetcher(&me.u)
+	if me.lookupTrackerIp != nil {
+		ips, err = me.lookupTrackerIp(&me.u)
 	} else {
 		// Do a regular dns lookup
 		ips, err = net.LookupIP(me.u.Hostname())