Examples with SessionId net.i2p.data.i2cp.SessionId used on opensource projects

Example 16 with SessionId

use of net.i2p.data.i2cp.SessionId in project i2p.i2p by i2p.

the class I2PSessionImpl method lookupDest.

/**
 *  Blocking.
 *  @param maxWait ms
 *  @since 0.8.3
 *  @return null on failure
 */
public Destination lookupDest(Hash h, long maxWait) throws I2PSessionException {
    synchronized (_lookupCache) {
        Destination rv = _lookupCache.get(h);
        if (rv != null)
            return rv;
    }
    synchronized (_stateLock) {
        // not before GOTDATE
        if (_state == State.CLOSED || _state == State.INIT || _state == State.OPENING) {
            if (_log.shouldLog(Log.INFO))
                _log.info("Session closed, cannot lookup " + h);
            return null;
        }
    }
    LookupWaiter waiter;
    long nonce;
    if (_routerSupportsHostLookup) {
        nonce = _lookupID.incrementAndGet() & 0x7fffffff;
        waiter = new LookupWaiter(h, nonce);
    } else {
        // won't be used
        nonce = 0;
        waiter = new LookupWaiter(h);
    }
    _pendingLookups.offer(waiter);
    Destination rv = null;
    try {
        if (_routerSupportsHostLookup) {
            if (_log.shouldLog(Log.INFO))
                _log.info("Sending HostLookup for " + h);
            SessionId id = _sessionId;
            if (id == null)
                id = new SessionId(65535);
            sendMessage_unchecked(new HostLookupMessage(id, h, nonce, maxWait));
        } else {
            if (_log.shouldLog(Log.INFO))
                _log.info("Sending DestLookup for " + h);
            sendMessage_unchecked(new DestLookupMessage(h));
        }
        try {
            synchronized (waiter) {
                waiter.wait(maxWait);
                rv = waiter.destination;
            }
        } catch (InterruptedException ie) {
            throw new I2PSessionException("Interrupted", ie);
        }
    } finally {
        _pendingLookups.remove(waiter);
    }
    return rv;
}

Example 17 with SessionId

use of net.i2p.data.i2cp.SessionId in project i2p.i2p by i2p.

the class I2PSessionImpl method messageReceived.

/**
 * The I2CPMessageEventListener callback.
 * Recieve notification of some I2CP message and handle it if possible.
 *
 * We route the message based on message type AND session ID.
 *
 * The following types never contain a session ID and are not routable to
 * a subsession:
 *     BandwidthLimitsMessage, DestReplyMessage
 *
 * The following types may not contain a valid session ID
 * even when intended for a subsession, so we must take special care:
 *     SessionStatusMessage
 *
 * @param reader unused
 */
public void messageReceived(I2CPMessageReader reader, I2CPMessage message) {
    int type = message.getType();
    SessionId id = message.sessionId();
    SessionId currId = _sessionId;
    if (id == null || id.equals(currId) || (currId == null && id != null && type == SessionStatusMessage.MESSAGE_TYPE) || ((id == null || id.getSessionId() == 65535) && (type == HostReplyMessage.MESSAGE_TYPE || type == DestReplyMessage.MESSAGE_TYPE))) {
        // it's for us
        I2CPMessageHandler handler = _handlerMap.getHandler(type);
        if (handler != null) {
            if (_log.shouldLog(Log.DEBUG))
                _log.debug(getPrefix() + "Message received of type " + type + " to be handled by " + handler.getClass().getSimpleName());
            handler.handleMessage(message, this);
        } else {
            if (_log.shouldLog(Log.WARN))
                _log.warn(getPrefix() + "Unknown message or unhandleable message received: type = " + type);
        }
    } else {
        SubSession sub = _subsessionMap.get(id);
        if (sub != null) {
            // it's for a subsession
            if (_log.shouldLog(Log.DEBUG))
                _log.debug(getPrefix() + "Message received of type " + type + " to be handled by " + sub);
            sub.messageReceived(reader, message);
        } else if (id != null && type == SessionStatusMessage.MESSAGE_TYPE) {
            // look for a subsession without a session
            synchronized (_subsessionLock) {
                for (SubSession sess : _subsessions) {
                    if (sess.getSessionId() == null) {
                        sess.messageReceived(reader, message);
                        id = sess.getSessionId();
                        if (id != null) {
                            if (id.equals(_sessionId)) {
                                // shouldnt happen
                                sess.setSessionId(null);
                                if (_log.shouldLog(Log.WARN))
                                    _log.warn("Dup or our session id " + id);
                            } else {
                                SubSession old = _subsessionMap.putIfAbsent(id, sess);
                                if (old != null) {
                                    // shouldnt happen
                                    sess.setSessionId(null);
                                    if (_log.shouldLog(Log.WARN))
                                        _log.warn("Dup session id " + id);
                                }
                            }
                        }
                        return;
                    }
                    if (_log.shouldLog(Log.WARN))
                        _log.warn(getPrefix() + "No session " + id + " to handle message: type = " + type);
                }
            }
        } else {
            // it's for nobody
            if (_log.shouldLog(Log.WARN))
                _log.warn(getPrefix() + "No session " + id + " to handle message: type = " + type);
        }
    }
}

Example 18 with SessionId

use of net.i2p.data.i2cp.SessionId in project i2p.i2p by i2p.

the class I2PSessionImpl method removeSubsession.

/**
 *  @since 0.9.21
 */
public void removeSubsession(I2PSession session) {
    if (!(session instanceof SubSession))
        return;
    synchronized (_subsessionLock) {
        _subsessions.remove(session);
        SessionId id = ((SubSession) session).getSessionId();
        if (id != null)
            _subsessionMap.remove(id);
        // / tell the subsession
        try {
            // doesn't really throw
            session.destroySession();
        } catch (I2PSessionException ise) {
        }
    }
    // do we need this here? subsession.destroySession() calls primary
    Destination d = session.getMyDestination();
    if (d != null)
        _context.keyRing().remove(d.calculateHash());
}

Example 19 with SessionId

use of net.i2p.data.i2cp.SessionId in project i2p.i2p by i2p.

the class RequestLeaseSetJob method runJob.

public void runJob() {
    if (_runner.isDead())
        return;
    LeaseSet requested = _requestState.getRequested();
    long endTime = requested.getEarliestLeaseDate();
    // Add a small number of ms (0 to MAX_FUDGE) that increases as we approach the expire time.
    // Since the earliest date functions as a version number,
    // this will force the floodfill to flood each new version;
    // otherwise it won't if the earliest time hasn't changed.
    long fudge = MAX_FUDGE - ((endTime - getContext().clock().now()) / (10 * 60 * 1000 / MAX_FUDGE));
    // if (_log.shouldLog(Log.DEBUG))
    // _log.debug("Adding fudge " + fudge);
    endTime += fudge;
    SessionId id = _runner.getSessionId(requested.getDestination().calculateHash());
    if (id == null) {
        _runner.failLeaseRequest(_requestState);
        return;
    }
    I2CPMessage msg;
    if (getContext().getProperty(PROP_VARIABLE, DFLT_VARIABLE) && (_runner instanceof QueuedClientConnectionRunner || RequestVariableLeaseSetMessage.isSupported(_runner.getClientVersion()))) {
        // new style - leases will have individual expirations
        RequestVariableLeaseSetMessage rmsg = new RequestVariableLeaseSetMessage();
        rmsg.setSessionId(id);
        for (int i = 0; i < requested.getLeaseCount(); i++) {
            Lease lease = requested.getLease(i);
            if (lease.getEndDate().getTime() < endTime) {
                // don't modify old object, we don't know where it came from
                Lease nl = new Lease();
                nl.setGateway(lease.getGateway());
                nl.setTunnelId(lease.getTunnelId());
                nl.setEndDate(new Date(endTime));
                lease = nl;
            // if (_log.shouldLog(Log.INFO))
            // _log.info("Adjusted end date to " + endTime + " for " + lease);
            }
            rmsg.addEndpoint(lease);
        }
        msg = rmsg;
    } else {
        // old style - all leases will have same expiration
        RequestLeaseSetMessage rmsg = new RequestLeaseSetMessage();
        Date end = new Date(endTime);
        rmsg.setEndDate(end);
        rmsg.setSessionId(id);
        for (int i = 0; i < requested.getLeaseCount(); i++) {
            Lease lease = requested.getLease(i);
            rmsg.addEndpoint(lease.getGateway(), lease.getTunnelId());
        }
        msg = rmsg;
    }
    try {
        // _runner.setLeaseRequest(state);
        _runner.doSend(msg);
        getContext().jobQueue().addJob(new CheckLeaseRequestStatus());
    } catch (I2CPMessageException ime) {
        getContext().statManager().addRateData("client.requestLeaseSetDropped", 1);
        _log.error("Error sending I2CP message requesting the lease set", ime);
        _requestState.setIsSuccessful(false);
        if (_requestState.getOnFailed() != null)
            RequestLeaseSetJob.this.getContext().jobQueue().addJob(_requestState.getOnFailed());
        _runner.failLeaseRequest(_requestState);
    // Don't disconnect, the tunnel will retry
    // _runner.disconnectClient("I2CP error requesting leaseSet");
    }
}

Example 20 with SessionId

use of net.i2p.data.i2cp.SessionId in project i2p.i2p by i2p.

the class ClientManager method locked_getNextSessionId.

/**
 *  Generate a new random, unused sessionId. Caller must synch on _runners.
 *  @return null on failure
 *  @since 0.9.12
 */
private SessionId locked_getNextSessionId() {
    int max = Math.max(1, Math.min(2048, _ctx.getProperty(PROP_MAX_SESSIONS, DEFAULT_MAX_SESSIONS)));
    if (_runnerSessionIds.size() >= max) {
        _log.logAlways(Log.WARN, "Session refused, max is " + max + ", increase " + PROP_MAX_SESSIONS);
        return null;
    }
    for (int i = 0; i < 100; i++) {
        SessionId id = new SessionId(_ctx.random().nextInt(MAX_SESSION_ID + 1));
        if (_runnerSessionIds.add(id))
            return id;
    }
    _log.logAlways(Log.WARN, "Session refused, can't find id slot");
    return null;
}