private TRTrackerAnnouncerHelper create(
TOTorrent torrent, String[] networks, TOTorrentAnnounceURLSet[] sets)
throws TRTrackerAnnouncerException {
TRTrackerAnnouncerHelper announcer;
boolean decentralised;
if (sets.length == 0) {
decentralised = TorrentUtils.isDecentralised(torrent.getAnnounceURL());
} else {
decentralised = TorrentUtils.isDecentralised(sets[0].getAnnounceURLs()[0]);
}
if (decentralised) {
announcer = new TRTrackerDHTAnnouncerImpl(torrent, networks, is_manual, getHelper());
} else {
announcer = new TRTrackerBTAnnouncerImpl(torrent, sets, networks, is_manual, getHelper());
}
for (TOTorrentAnnounceURLSet set : sets) {
URL[] urls = set.getAnnounceURLs();
for (URL u : urls) {
String key = u.toExternalForm();
StatusSummary summary = recent_responses.get(key);
if (summary == null) {
summary = new StatusSummary(announcer, u);
recent_responses.put(key, summary);
} else {
summary.setHelper(announcer);
}
}
}
if (provider != null) {
announcer.setAnnounceDataProvider(provider);
}
if (ip_override != null) {
announcer.setIPOverride(ip_override);
}
return (announcer);
}
public URL getTrackerURL() {
TRTrackerAnnouncerHelper active = getBestActive();
if (active != null) {
return (active.getTrackerURL());
}
return (null);
}
public int getLastUpdateTime() {
TRTrackerAnnouncerHelper active = getBestActive();
if (active != null) {
return (active.getLastUpdateTime());
}
return (0);
}
public int getTimeUntilNextUpdate() {
TRTrackerAnnouncerHelper active = getBestActive();
if (active != null) {
return (active.getTimeUntilNextUpdate());
}
return (Integer.MAX_VALUE);
}
public TRTrackerAnnouncerResponse getLastResponse() {
TRTrackerAnnouncerResponse result = null;
TRTrackerAnnouncerHelper best = getBestActive();
if (best != null) {
result = best.getLastResponse();
}
if (result == null) {
result = last_response_informed;
}
return (result);
}
protected TRTrackerAnnouncerHelper getBestActiveSupport() {
List<TRTrackerAnnouncerHelper> x = announcers.getList();
TRTrackerAnnouncerHelper error_resp = null;
for (TRTrackerAnnouncerHelper announcer : x) {
TRTrackerAnnouncerResponse response = announcer.getLastResponse();
if (response != null) {
int resp_status = response.getStatus();
if (resp_status == TRTrackerAnnouncerResponse.ST_ONLINE) {
return (announcer);
} else if (error_resp == null
&& resp_status == TRTrackerAnnouncerResponse.ST_REPORTED_ERROR) {
error_resp = announcer;
}
}
}
if (error_resp != null) {
return (error_resp);
}
if (x.size() > 0) {
return (x.get(0));
}
return (null);
}
protected void updateFrom(TRTrackerAnnouncerResponse response) {
time = SystemTime.getMonotonousTime();
int state = response.getStatus();
if (state == TRTrackerAnnouncerResponse.ST_ONLINE) {
status = TrackerPeerSource.ST_ONLINE;
seeds = response.getScrapeCompleteCount();
leechers = response.getScrapeIncompleteCount();
completed = response.getScrapeDownloadedCount();
peers = response.getPeers().length;
} else {
status = TrackerPeerSource.ST_ERROR;
}
status_str = response.getStatusString();
interval = (int) helper.getInterval();
min_interval = (int) helper.getMinInterval();
}
protected void checkActivation(boolean force) {
synchronized (this) {
int next_check_delay;
if (destroyed || stopped || announcers.size() <= activated.size()) {
return;
}
if (provider == null) {
next_check_delay = ACT_CHECK_INIT_DELAY;
} else {
boolean activate = force;
boolean seeding = provider.getRemaining() == 0;
if (seeding && activated.size() > 0) {
// when seeding we only activate on tracker fail or major lack of connections
// as normally we rely on downloaders rotating and finding us
int connected = provider.getConnectedConnectionCount();
if (connected < 1) {
activate = SystemTime.getMonotonousTime() - last_activation_time >= 60 * 1000;
next_check_delay = ACT_CHECK_SEEDING_SHORT_DELAY;
} else if (connected < 3) {
next_check_delay = ACT_CHECK_SEEDING_LONG_DELAY;
} else {
next_check_delay = 0;
}
} else {
int allowed = provider.getMaxNewConnectionsAllowed();
int pending = provider.getPendingConnectionCount();
int connected = provider.getConnectedConnectionCount();
int online = 0;
for (TRTrackerAnnouncerHelper a : activated) {
TRTrackerAnnouncerResponse response = a.getLastResponse();
if (response != null && response.getStatus() == TRTrackerAnnouncerResponse.ST_ONLINE) {
online++;
}
}
/*
System.out.println(
"checkActivation: announcers=" + announcers.size() +
", active=" + activated.size() +
", online=" + online +
", allowed=" + allowed +
", pending=" + pending +
", connected=" + connected +
", seeding=" + seeding );
*/
if (online == 0) {
activate = true;
// no trackers online, start next and recheck soon
next_check_delay = ACT_CHECK_INIT_DELAY;
} else {
int potential = connected + pending;
if (potential < 10) {
// minimal connectivity
activate = true;
next_check_delay = ACT_CHECK_INIT_DELAY;
} else if (allowed >= 5 && pending < 3 * allowed / 4) {
// not enough to fulfill our needs
activate = true;
next_check_delay = ACT_CHECK_INTERIM_DELAY;
} else {
// things look good, recheck in a bit
next_check_delay = ACT_CHECK_IDLE_DELAY;
}
}
}
if (activate) {
for (TRTrackerAnnouncerHelper a : announcers) {
if (!activated.contains(a)) {
if (Logger.isEnabled()) {
Logger.log(
new LogEvent(
getTorrent(), LOGID, "Activating " + getString(a.getAnnounceSets())));
}
activated.add(a);
last_activation_time = SystemTime.getMonotonousTime();
if (complete) {
a.complete(true);
} else {
a.update(false);
}
break;
}
}
}
}
if (next_check_delay > 0) {
setupActivationCheck(next_check_delay);
}
}
}
public void manualUpdate() {
helper.update(true);
}
public boolean canManuallyUpdate() {
return (((SystemTime.getCurrentTime() / 1000 - helper.getLastUpdateTime()
>= TRTrackerAnnouncer.REFRESH_MINIMUM_SECS)));
}
public int getSecondsToUpdate() {
return (helper.getTimeUntilNextUpdate());
}
public boolean isUpdating() {
return (helper.isUpdating());
}
protected void split() throws TRTrackerAnnouncerException {
String[] networks = f_provider == null ? null : f_provider.getNetworks();
TRTrackerAnnouncerHelper to_activate = null;
synchronized (this) {
if (stopped || destroyed) {
return;
}
TOTorrent torrent = getTorrent();
TOTorrentAnnounceURLSet[] sets = torrent.getAnnounceURLGroup().getAnnounceURLSets();
// sanitise dht entries
if (sets.length == 0) {
sets =
new TOTorrentAnnounceURLSet[] {
torrent
.getAnnounceURLGroup()
.createAnnounceURLSet(new URL[] {torrent.getAnnounceURL()})
};
} else {
boolean found_decentralised = false;
boolean modified = false;
for (int i = 0; i < sets.length; i++) {
TOTorrentAnnounceURLSet set = sets[i];
URL[] urls = set.getAnnounceURLs().clone();
for (int j = 0; j < urls.length; j++) {
URL u = urls[j];
if (u != null && TorrentUtils.isDecentralised(u)) {
if (found_decentralised) {
modified = true;
urls[j] = null;
} else {
found_decentralised = true;
}
}
}
}
if (modified) {
List<TOTorrentAnnounceURLSet> s_list = new ArrayList<TOTorrentAnnounceURLSet>();
for (TOTorrentAnnounceURLSet set : sets) {
URL[] urls = set.getAnnounceURLs();
List<URL> u_list = new ArrayList<URL>(urls.length);
for (URL u : urls) {
if (u != null) {
u_list.add(u);
}
}
if (u_list.size() > 0) {
s_list.add(
torrent
.getAnnounceURLGroup()
.createAnnounceURLSet(u_list.toArray(new URL[u_list.size()])));
}
}
sets = s_list.toArray(new TOTorrentAnnounceURLSet[s_list.size()]);
}
}
List<TOTorrentAnnounceURLSet[]> new_sets = new ArrayList<TOTorrentAnnounceURLSet[]>();
if (is_manual || sets.length < 2) {
new_sets.add(sets);
} else {
List<TOTorrentAnnounceURLSet> list =
new ArrayList<TOTorrentAnnounceURLSet>(Arrays.asList(sets));
// often we have http:/xxxx/ and udp:/xxxx/ as separate groups - keep these together
while (list.size() > 0) {
TOTorrentAnnounceURLSet set1 = list.remove(0);
boolean done = false;
URL[] urls1 = set1.getAnnounceURLs();
if (urls1.length == 1) {
URL url1 = urls1[0];
String prot1 = url1.getProtocol().toLowerCase();
String host1 = url1.getHost();
for (int i = 0; i < list.size(); i++) {
TOTorrentAnnounceURLSet set2 = list.get(i);
URL[] urls2 = set2.getAnnounceURLs();
if (urls2.length == 1) {
URL url2 = urls2[0];
String prot2 = url2.getProtocol().toLowerCase();
String host2 = url2.getHost();
if (host1.equals(host2)) {
if ((prot1.equals("udp") && prot2.startsWith("http"))
|| (prot2.equals("udp") && prot1.startsWith("http"))) {
list.remove(i);
new_sets.add(new TOTorrentAnnounceURLSet[] {set1, set2});
done = true;
}
}
}
}
}
if (!done) {
new_sets.add(new TOTorrentAnnounceURLSet[] {set1});
}
}
}
// work out the difference
Iterator<TOTorrentAnnounceURLSet[]> ns_it = new_sets.iterator();
// need to copy list as we modify it and returned list ain't thread safe
List<TRTrackerAnnouncerHelper> existing_announcers =
new ArrayList<TRTrackerAnnouncerHelper>(announcers.getList());
List<TRTrackerAnnouncerHelper> new_announcers = new ArrayList<TRTrackerAnnouncerHelper>();
// first look for unchanged sets
while (ns_it.hasNext()) {
TOTorrentAnnounceURLSet[] ns = ns_it.next();
Iterator<TRTrackerAnnouncerHelper> a_it = existing_announcers.iterator();
while (a_it.hasNext()) {
TRTrackerAnnouncerHelper a = a_it.next();
TOTorrentAnnounceURLSet[] os = a.getAnnounceSets();
if (same(ns, os)) {
ns_it.remove();
a_it.remove();
new_announcers.add(a);
break;
}
}
}
// reuse existing announcers
// first remove dht ones from the equation
TRTrackerAnnouncerHelper existing_dht_announcer = null;
TOTorrentAnnounceURLSet[] new_dht_set = null;
ns_it = new_sets.iterator();
while (ns_it.hasNext()) {
TOTorrentAnnounceURLSet[] x = ns_it.next();
if (TorrentUtils.isDecentralised(x[0].getAnnounceURLs()[0])) {
new_dht_set = x;
ns_it.remove();
break;
}
}
Iterator<TRTrackerAnnouncerHelper> an_it = existing_announcers.iterator();
while (an_it.hasNext()) {
TRTrackerAnnouncerHelper a = an_it.next();
TOTorrentAnnounceURLSet[] x = a.getAnnounceSets();
if (TorrentUtils.isDecentralised(x[0].getAnnounceURLs()[0])) {
existing_dht_announcer = a;
an_it.remove();
break;
}
}
if (existing_dht_announcer != null && new_dht_set != null) {
new_announcers.add(existing_dht_announcer);
} else if (existing_dht_announcer != null) {
activated.remove(existing_dht_announcer);
existing_dht_announcer.destroy();
} else if (new_dht_set != null) {
TRTrackerAnnouncerHelper a = create(torrent, networks, new_dht_set);
new_announcers.add(a);
}
// now do the non-dht ones
ns_it = new_sets.iterator();
while (ns_it.hasNext() && existing_announcers.size() > 0) {
TRTrackerAnnouncerHelper a = existing_announcers.remove(0);
TOTorrentAnnounceURLSet[] s = ns_it.next();
ns_it.remove();
if (activated.contains(a)
&& torrent.getPrivate()
&& a instanceof TRTrackerBTAnnouncerImpl) {
URL url = a.getTrackerURL();
if (url != null) {
forceStop((TRTrackerBTAnnouncerImpl) a, networks, url);
}
}
a.setAnnounceSets(s, networks);
new_announcers.add(a);
}
// create any new ones required
ns_it = new_sets.iterator();
while (ns_it.hasNext()) {
TOTorrentAnnounceURLSet[] s = ns_it.next();
TRTrackerAnnouncerHelper a = create(torrent, networks, s);
new_announcers.add(a);
}
// finally fix up the announcer list to represent the new state
Iterator<TRTrackerAnnouncerHelper> a_it = announcers.iterator();
while (a_it.hasNext()) {
TRTrackerAnnouncerHelper a = a_it.next();
if (!new_announcers.contains(a)) {
a_it.remove();
try {
if (activated.contains(a)
&& torrent.getPrivate()
&& a instanceof TRTrackerBTAnnouncerImpl) {
URL url = a.getTrackerURL();
if (url != null) {
forceStop((TRTrackerBTAnnouncerImpl) a, networks, url);
}
}
} finally {
if (Logger.isEnabled()) {
Logger.log(
new LogEvent(
getTorrent(), LOGID, "Deactivating " + getString(a.getAnnounceSets())));
}
activated.remove(a);
a.destroy();
}
}
}
a_it = new_announcers.iterator();
while (a_it.hasNext()) {
TRTrackerAnnouncerHelper a = a_it.next();
if (!announcers.contains(a)) {
announcers.add(a);
}
}
if (!is_manual && announcers.size() > 0) {
if (activated.size() == 0) {
TRTrackerAnnouncerHelper a = announcers.get(0);
if (Logger.isEnabled()) {
Logger.log(
new LogEvent(getTorrent(), LOGID, "Activating " + getString(a.getAnnounceSets())));
}
activated.add(a);
last_activation_time = SystemTime.getMonotonousTime();
if (provider != null) {
to_activate = a;
}
}
setupActivationCheck(ACT_CHECK_INIT_DELAY);
}
}
if (to_activate != null) {
if (complete) {
to_activate.complete(true);
} else {
to_activate.update(false);
}
}
}