private void x_startTorrent() {
boolean ok = _util.connect();
if (!ok) fatal("Unable to connect to I2P");
if (coordinator == null) {
I2PServerSocket serversocket = _util.getServerSocket();
if (serversocket == null) fatal("Unable to listen for I2P connections");
else {
Destination d = serversocket.getManager().getSession().getMyDestination();
if (_log.shouldLog(Log.INFO))
_log.info(
"Listening on I2P destination "
+ d.toBase64()
+ " / "
+ d.calculateHash().toBase64());
}
if (_log.shouldLog(Log.INFO))
_log.info("Starting PeerCoordinator, ConnectionAcceptor, and TrackerClient");
activity = "Collecting pieces";
coordinator = new PeerCoordinator(_util, id, infoHash, meta, storage, this, this);
coordinator.setUploaded(savedUploaded);
if (_peerCoordinatorSet != null) {
// multitorrent
_peerCoordinatorSet.add(coordinator);
} else {
// single torrent
acceptor = new ConnectionAcceptor(_util, new PeerAcceptor(coordinator));
}
// TODO pass saved closest DHT nodes to the tracker? or direct to the coordinator?
trackerclient = new TrackerClient(_util, meta, additionalTrackerURL, coordinator, this);
}
// ensure acceptor is running when in multitorrent
if (_peerCoordinatorSet != null && acceptor != null) {
acceptor.startAccepting();
}
stopped = false;
if (coordinator.halted()) {
coordinator.restart();
if (_peerCoordinatorSet != null) _peerCoordinatorSet.add(coordinator);
}
if (!trackerclient.started()) {
trackerclient.start();
} else if (trackerclient.halted()) {
if (storage != null) {
try {
storage.reopen();
} catch (IOException ioe) {
try {
storage.close();
} catch (IOException ioee) {
ioee.printStackTrace();
}
fatal("Could not reopen storage", ioe);
}
}
trackerclient.start();
} else {
if (_log.shouldLog(Log.INFO)) _log.info("NOT starting TrackerClient???");
}
}
public boolean overUpBWLimit() {
if (_peerCoordinatorSet == null) return false;
long total = 0;
for (PeerCoordinator c : _peerCoordinatorSet) {
if (!c.halted()) total += c.getCurrentUploadRate();
}
long limit = 1024l * _util.getMaxUpBW();
if (_log.shouldLog(Log.INFO)) _log.info("Total up bw: " + total + " Limit: " + limit);
return total > limit;
}
public boolean overUploadLimit(int uploaders) {
if (_peerCoordinatorSet == null || uploaders <= 0) return false;
int totalUploaders = 0;
for (PeerCoordinator c : _peerCoordinatorSet) {
if (!c.halted()) totalUploaders += c.uploaders;
}
int limit = _util.getMaxUploaders();
if (_log.shouldLog(Log.DEBUG))
_log.debug("Total uploaders: " + totalUploaders + " Limit: " + limit);
return totalUploaders > limit;
}
private TrackerInfo doRequest(
String announce,
String infoHash,
String peerID,
long uploaded,
long downloaded,
long left,
String event)
throws IOException {
String s =
announce
+ "?info_hash="
+ infoHash
+ "&peer_id="
+ peerID
+ "&port="
+ port
+ "&uploaded="
+ uploaded
+ "&downloaded="
+ downloaded
+ "&left="
+ left
+ ((event != NO_EVENT) ? ("&event=" + event) : "");
URL u = new URL(s);
if (Snark.debug >= Snark.INFO) Snark.debug("Sending TrackerClient request: " + u, Snark.INFO);
URLConnection c = u.openConnection();
c.connect();
InputStream in = c.getInputStream();
if (c instanceof HttpURLConnection) {
// Check whether the page exists
int code = ((HttpURLConnection) c).getResponseCode();
if (code / 100 != 2) // We can only handle 200 OK responses
throw new IOException(
"Loading '" + s + "' gave error code " + code + ", it probably doesn't exists");
}
TrackerInfo info = new TrackerInfo(in, coordinator.getID(), coordinator.getMetaInfo());
if (Snark.debug >= Snark.INFO) Snark.debug("TrackerClient response: " + info, Snark.INFO);
lastRequestTime = System.currentTimeMillis();
String failure = info.getFailureReason();
if (failure != null) throw new IOException(failure);
interval = info.getInterval() * 1000;
return info;
}
/**
* Called when the PeerCoordinator got the MetaInfo via magnet. CoordinatorListener. Create the
* storage, tell SnarkManager, and give the storage back to the coordinator.
*
* @throws RuntimeException via fatal()
* @since 0.8.4
*/
public void gotMetaInfo(PeerCoordinator coordinator, MetaInfo metainfo) {
try {
String base = Storage.filterName(metainfo.getName());
File baseFile;
if (_util.getFilesPublic()) baseFile = new File(rootDataDir, base);
else baseFile = new SecureFile(rootDataDir, base);
// The following two may throw IOE...
storage = new Storage(_util, baseFile, metainfo, this, false);
storage.check();
// ... so don't set meta until here
meta = metainfo;
if (completeListener != null) {
String newName = completeListener.gotMetaInfo(this);
if (newName != null) torrent = newName;
// else some horrible problem
}
coordinator.setStorage(storage);
} catch (IOException ioe) {
if (storage != null) {
try {
storage.close();
} catch (IOException ioee) {
}
}
fatal("Could not check or create storage", ioe);
}
}
public TrackerClient(MetaInfo meta, PeerCoordinator coordinator, int port) {
// Set unique name.
super("TrackerClient-" + urlencode(coordinator.getID()));
this.meta = meta;
this.coordinator = coordinator;
// XXX - No way to actaully give the tracker feedback that we
// don't run a peer acceptor on any port so use discard 9/tcp sink null
this.port = (port == -1) ? 9 : port;
stop = false;
}
/**
* Stop contacting the tracker and talking with peers
*
* @param fast if true, limit the life of the unannounce threads
* @since 0.9.1
*/
public synchronized void stopTorrent(boolean fast) {
stopped = true;
TrackerClient tc = trackerclient;
if (tc != null) tc.halt(fast);
PeerCoordinator pc = coordinator;
if (pc != null) pc.halt();
Storage st = storage;
if (st != null) {
// TODO: Cache the config-in-mem to compare vs config-on-disk
// (needed for auto-save to not double-save in some cases)
// boolean changed = storage.isChanged() || getUploaded() != savedUploaded;
boolean changed = true;
try {
storage.close();
} catch (IOException ioe) {
System.out.println("Error closing " + torrent);
ioe.printStackTrace();
}
if (changed && completeListener != null) completeListener.updateStatus(this);
}
if (pc != null && _peerCoordinatorSet != null) _peerCoordinatorSet.remove(pc);
if (_peerCoordinatorSet == null) _util.disconnect();
}
/**
* Bytes still wanted. DOES account for (i.e. does not include) skipped files. FIXME -1 when not
* running.
*
* @return exact value. or -1 if no storage yet or when not running.
* @since 0.9.1
*/
public long getNeededLength() {
PeerCoordinator coord = coordinator;
if (coord != null) return coord.getNeededLength();
return -1;
}
/** @since 0.8.4 */
public void updatePiecePriorities() {
PeerCoordinator coord = coordinator;
if (coord != null) coord.updatePiecePriorities();
}
/** Returns the 4-minute-average rate in Bps */
public long getUploadRate() {
return PeerCoordinator.getRate(uploaded_old);
}
/** @since 0.8.4 */
public long getUploaded() {
PeerCoordinator coord = coordinator;
if (coord != null) return coord.getUploaded();
return savedUploaded;
}
/** @since 0.8.4 */
public long getDownloaded() {
PeerCoordinator coord = coordinator;
if (coord != null) return coord.getDownloaded();
return 0;
}
/** @since 0.8.4 */
public long getUploadRate() {
PeerCoordinator coord = coordinator;
if (coord != null) return coord.getUploadRate();
return 0;
}
public void run() {
// XXX - Support other IPs
String announce = meta.getAnnounce();
String infoHash = urlencode(meta.getInfoHash());
String peerID = urlencode(coordinator.getID());
long uploaded = coordinator.getUploaded();
long downloaded = coordinator.getDownloaded();
long left = coordinator.getLeft();
boolean completed = (left == 0);
try {
boolean started = false;
while (!started) {
try {
// Send start.
TrackerInfo info =
doRequest(announce, infoHash, peerID, uploaded, downloaded, left, STARTED_EVENT);
Iterator it = info.getPeers().iterator();
while (it.hasNext()) coordinator.addPeer((Peer) it.next());
started = true;
} catch (IOException ioe) {
// Probably not fatal (if it doesn't last to long...)
Snark.debug(
"WARNING: Could not contact tracker at '" + announce + "': " + ioe, Snark.WARNING);
}
if (!started && !stop) {
Snark.debug(" Retrying in one minute...", Snark.DEBUG);
try {
// Sleep one minutes...
Thread.sleep(60 * 1000);
} catch (InterruptedException interrupt) {
// ignore
}
}
}
while (!stop) {
try {
// Sleep some minutes...
Thread.sleep(SLEEP * 60 * 1000);
} catch (InterruptedException interrupt) {
// ignore
}
if (stop) break;
uploaded = coordinator.getUploaded();
downloaded = coordinator.getDownloaded();
left = coordinator.getLeft();
// First time we got a complete download?
String event;
if (!completed && left == 0) {
completed = true;
event = COMPLETED_EVENT;
} else event = NO_EVENT;
// Only do a request when necessary.
if (event == COMPLETED_EVENT
|| coordinator.needPeers()
|| System.currentTimeMillis() > lastRequestTime + interval) {
try {
TrackerInfo info =
doRequest(announce, infoHash, peerID, uploaded, downloaded, left, event);
Iterator it = info.getPeers().iterator();
while (it.hasNext()) coordinator.addPeer((Peer) it.next());
} catch (IOException ioe) {
// Probably not fatal (if it doesn't last to long...)
Snark.debug(
"WARNING: Could not contact tracker at '" + announce + "': " + ioe, Snark.WARNING);
}
}
}
} catch (Throwable t) {
Snark.debug("TrackerClient: " + t, Snark.ERROR);
t.printStackTrace();
} finally {
try {
TrackerInfo info =
doRequest(announce, infoHash, peerID, uploaded, downloaded, left, STOPPED_EVENT);
} catch (IOException ioe) {
/* ignored */
}
}
}
/** @since 0.8.4 */
public int getPeerCount() {
PeerCoordinator coord = coordinator;
if (coord != null) return coord.getPeerCount();
return 0;
}
/** Push the total uploaded/downloaded onto a RATE_DEPTH deep stack */
public void setRateHistory(long up, long down) {
PeerCoordinator.setRate(up, uploaded_old);
PeerCoordinator.setRate(down, downloaded_old);
}
/** @since 0.8.4 */
public List<Peer> getPeerList() {
PeerCoordinator coord = coordinator;
if (coord != null) return coord.peerList();
return Collections.emptyList();
}
public long getDownloadRate() {
return PeerCoordinator.getRate(downloaded_old);
}
public void setWantedPieces(Storage storage) {
coordinator.setWantedPieces();
}