feat(torrent/download): Add multi tracker behaviour

1. Some discuss show the multitracker behaviour with: One tracker One
tier may not as good as we want, So we add another default chosen with
config_key 'base.site_multi_tracker_behaviour' which only set one tier
with full tracker list in `announce-list`
2. fix typo about word 'multi' from word 'muti'

apps/models/Torrent.php

@@ -194,17 +194,28 @@ public function getDownloadDict($encode = true)
  $dict["announce"] = $scheme . config("base.site_tracker_url") . $announce_suffix;
 
  /** BEP 0012 Multitracker Metadata Extension
- * See more on : http://www.bittorrent.org/beps/bep_0012.html
+ * @see http://www.bittorrent.org/beps/bep_0012.html
+ * @see https://web.archive.org/web/20190724110959/https://blog.rhilip.info/archives/1108/
+ * which discuss about multitracker behaviour on common bittorrent client ( Chinese Version )
  */
- if ($muti_tracker = config("base.site_muti_tracker_url")) {
- $dict["announce-list"] = [];
-
- // Add our main tracker into muti_tracker_list to avoid lost error....
- $muti_tracker = config("base.site_tracker_url") . "," . $muti_tracker;
-
- $muti_tracker_list = explode(",", $muti_tracker);
- foreach (array_unique($muti_tracker_list) as $tracker) { // use array_unique to remove dupe tracker
- $dict["announce-list"][] = [$scheme . $tracker . $announce_suffix];
+ if ($multi_trackers = config("base.site_multi_tracker_url")) {
+ // Add our main tracker into muti_tracker_list to avoid lost....
+ $multi_trackers = config("base.site_tracker_url") . "," . $multi_trackers;
+ $muti_trackers_list = explode(",", $multi_trackers);
+ $muti_trackers_list = array_unique($muti_trackers_list); // use array_unique to remove dupe tracker
+ // fulfill each tracker with scheme and suffix about user identity
+ $muti_trackers_list = array_map(function ($uri) use ($scheme, $announce_suffix) {
+ return $scheme . $uri . $announce_suffix;
+ }, $muti_trackers_list);
+
+ if (config('base.site_multi_tracker_behaviour') == 'separate') {
+ /** d['announce-list'] = [ [tracker1], [backup1], [backup2] ] */
+ foreach ($muti_trackers_list as $tracker) { // separate each tracker to different tier
+ $dict["announce-list"][] = [$tracker]; // Make each tracker as tier
+ }
+ } else { // config('base.site_multi_tracker_behaviour') == 'union'
+ /** d['announce-list'] = [[ tracker1, tracker2, tracker3 ]] */
+ $dict["announce-list"][] = $muti_trackers_list;
  }
  }
 

apps/timer/TrackerAnnounceTimer.php

@@ -60,7 +60,7 @@ private function processAnnounceRequest($queries, $seeder, $userInfo, $torrentIn
  // If session is not exist and &event!=stopped, a new session should start
  if ($queries['event'] != 'stopped') {
  // Then create new session in database
- // Update `torrents`, if peer's role is a seeder ,so complete +1 , elseif he is a leecher , so incomplete +1
+ // TODO move to redis: Update `torrents`, if peer's role is a seeder ,so complete +1 , elseif he is a leecher , so incomplete +1
  app()->pdo->createCommand("UPDATE `torrents` SET `{$torrentUpdateKey}` = `{$torrentUpdateKey}` +1 WHERE id=:tid")->bindParams([
  "tid" => $torrentInfo["id"]
  ])->execute();
@@ -109,7 +109,7 @@ private function processAnnounceRequest($queries, $seeder, $userInfo, $torrentIn
 
  $this->getTorrentBuff($userInfo['id'], $torrentInfo["id"], $trueUploaded, $trueDownloaded, $thisUploaded, $thisDownloaded);
 
- // Update Table `peers`, `snatched` by it's event tag
+ // TODO move to redis: Update Table `peers`, `snatched` by it's event tag
  // Notice : there MUST have history record in Table `snatched` if session is exist !!!!!!!!
  if ($queries["event"] === "stopped") {
  // Update `torrents`, if peer's role is a seeder ,so complete -1 , elseif he is a leecher , so incomplete -1
@@ -153,7 +153,7 @@ private function processAnnounceRequest($queries, $seeder, $userInfo, $torrentIn
  "ip" => $queries['remote_ip'],
  "uid" => $userInfo["id"], "tid" => $torrentInfo["id"],
  ]);
- // Update `torrents`, with complete +1 incomplete -1 downloaded +1
+ // TODO move to redis: Update `torrents`, with complete +1 incomplete -1 downloaded +1
  app()->pdo->createCommand("UPDATE `torrents` SET `complete` = `complete` + 1, `incomplete` = `incomplete` -1 , `downloaded` = `downloaded` + 1 WHERE `id`=:tid")->bindParams([
  "tid" => $torrentInfo["id"]
  ])->execute();

migration/ridpt.sql

@@ -3,7 +3,7 @@
 -- https://www.phpmyadmin.net/
 --
 -- Host: 127.0.0.1
--- Generation Time: Jul 22, 2019 at 06:28 PM
+-- Generation Time: Jul 24, 2019 at 09:07 PM
 -- Server version: 8.0.16
 -- PHP Version: 7.3.7
 
@@ -672,7 +672,8 @@ INSERT INTO `site_config` (`name`, `value`) VALUES
 ('base.site_email', 'admin@ridpt.top'),
 ('base.site_generator', 'RidPT'),
 ('base.site_keywords', 'RidPT,Private Tracker'),
-('base.site_muti_tracker_url', ''),
+('base.site_multi_tracker_behaviour', 'union'),
+('base.site_multi_tracker_url', ''),
 ('base.site_name', 'RidPT'),
 ('base.site_tracker_url', 'ridpt.top/tracker'),
 ('base.site_url', 'ridpt.top'),