downloader reduce amount of trackers to 10 (#3394)

cmd/downloader/trackers/embed.go

@@ -7,23 +7,19 @@ import (
 
 //go:embed trackerslist/trackers_best.txt
 var best string
-var Best = strings.Split(best, "\n\n")
+var Best = first10(strings.Split(best, "\n\n"))
 
 //go:embed trackerslist/trackers_all_https.txt
 var https string
-var Https = withoutBest(strings.Split(https, "\n\n"))
-
-//go:embed trackerslist/trackers_all_http.txt
-var http string
-var Http = withoutBest(strings.Split(http, "\n\n"))
+var Https = first10(withoutBest(strings.Split(https, "\n\n")))
 
 //go:embed trackerslist/trackers_all_udp.txt
 var udp string
-var Udp = withoutBest(strings.Split(udp, "\n\n"))
+var Udp = first10(withoutBest(strings.Split(udp, "\n\n")))
 
 //go:embed trackerslist/trackers_all_ws.txt
 var ws string
-var Ws = withoutBest(strings.Split(ws, "\n\n"))
+var Ws = first10(withoutBest(strings.Split(ws, "\n\n")))
 
 func withoutBest(in []string) (res []string) {
 Loop:
@@ -33,6 +29,19 @@ Loop:
 				continue Loop
 			}
 		}
+		//skip unsecure protocols
+		if strings.HasPrefix(tracker, "ws://") || strings.HasPrefix(tracker, "http://") {
+			continue
+		}
+		res = append(res, tracker)
+	}
+	return res
+}
+func first10(in []string) (res []string) {
+	for i, tracker := range in {
+		if i >= 10 {
+			break
+		}
 		res = append(res, tracker)
 	}
 	return res

trackerslist @ 0ccaf80d

-Subproject commit 40110ecd394cd66c749ca5fe278e36cb444bdbf8
+Subproject commit 0ccaf80da5f0e813841514c2dec4798bbed3372a