Retransmission without backoff for messages and updates.

briar-api/src/net/sf/briar/api/db/DatabaseComponent.java

@@ -113,10 +113,12 @@ public interface DatabaseComponent {
 	RetentionAck generateRetentionAck(ContactId c) throws DbException;
 
 	/**
-	 * Generates a retention update for the given contact. Returns null if no
-	 * update is due.
+	 * Generates a retention update for the given contact, for transmission
+	 * over a transport with the given latency. Returns null if no update is
+	 * due.
 	 */
-	RetentionUpdate generateRetentionUpdate(ContactId c) throws DbException;
+	RetentionUpdate generateRetentionUpdate(ContactId c, long maxLatency)
+			throws DbException;
 
 	/**
 	 * Generates a subscription ack for the given contact. Returns null if no
@@ -125,10 +127,11 @@ public interface DatabaseComponent {
 	SubscriptionAck generateSubscriptionAck(ContactId c) throws DbException;
 
 	/**
-	 * Generates a subscription update for the given contact. Returns null if
-	 * no update is due.
+	 * Generates a subscription update for the given contact, for transmission
+	 * over a transport with the given latency. Returns null if no update is
+	 * due.
 	 */
-	SubscriptionUpdate generateSubscriptionUpdate(ContactId c)
+	SubscriptionUpdate generateSubscriptionUpdate(ContactId c, long maxLatency)
 			throws DbException;
 
 	/**
@@ -139,11 +142,12 @@ public interface DatabaseComponent {
 			throws DbException;
 
 	/**
-	 * Generates a batch of transport updates for the given contact. Returns
-	 * null if no updates are due.
+	 * Generates a batch of transport updates for the given contact, for
+	 * transmission over a transport with the given latency. Returns null if no
+	 * updates are due.
 	 */
-	Collection<TransportUpdate> generateTransportUpdates(ContactId c)
-			throws DbException;
+	Collection<TransportUpdate> generateTransportUpdates(ContactId c,
+			long maxLatency) throws DbException;
 
 	/** Returns the configuration for the given transport. */
 	TransportConfig getConfig(TransportId t) throws DbException;

briar-core/src/net/sf/briar/db/Database.java

@@ -25,6 +25,8 @@ import net.sf.briar.api.messaging.TransportUpdate;
 import net.sf.briar.api.transport.Endpoint;
 import net.sf.briar.api.transport.TemporarySecret;
 
+// FIXME: Document the preconditions for calling each method
+
 /**
  * A low-level interface to the database (DatabaseComponent provides a
  * high-level interface). Most operations take a transaction argument, which is
@@ -103,15 +105,6 @@ interface Database<T> {
 	 */
 	void addMessageToAck(T txn, ContactId c, MessageId m) throws DbException;
 
-	/**
-	 * Records the given messages as needing to be acknowledged by the given
-	 * expiry time.
-	 * <p>
-	 * Locking: contact read, message write.
-	 */
-	void addOutstandingMessages(T txn, ContactId c, Collection<MessageId> sent,
-			long expiry) throws DbException;
-
 	/**
 	 * Stores the given message, or returns false if the message is already in
 	 * the database.
@@ -308,9 +301,9 @@ interface Database<T> {
 	byte[] getRawMessage(T txn, MessageId m) throws DbException;
 
 	/**
-	 * Returns the message identified by the given ID, in serialised form, or
-	 * null if the message is not present in the database or is not sendable to
-	 * the given contact.
+	 * Returns the message identified by the given ID, in serialised form.
+	 * Returns null if the message is not present in the database or is not
+	 * sendable to the given contact.
 	 * <p>
 	 * Locking: contact read, message read, subscription read.
 	 */
@@ -355,12 +348,13 @@ interface Database<T> {
 	RetentionAck getRetentionAck(T txn, ContactId c) throws DbException;
 
 	/**
-	 * Returns a retention update for the given contact, or null if no update
-	 * is due.
+	 * Returns a retention update for the given contact and updates its expiry
+	 * time using the given latency. Returns null if no update is due.
 	 * <p>
 	 * Locking: contact read, retention write.
 	 */
-	RetentionUpdate getRetentionUpdate(T txn, ContactId c) throws DbException;
+	RetentionUpdate getRetentionUpdate(T txn, ContactId c, long maxLatency)
+			throws DbException;
 
 	/**
 	 * Returns all temporary secrets.
@@ -416,13 +410,13 @@ interface Database<T> {
 	SubscriptionAck getSubscriptionAck(T txn, ContactId c) throws DbException;
 
 	/**
-	 * Returns a subscription update for the given contact, or null if no
-	 * update is due.
+	 * Returns a subscription update for the given contact and updates its
+	 * expiry time using the given latency. Returns null if no update is due.
 	 * <p>
 	 * Locking: contact read, subscription write.
 	 */
-	SubscriptionUpdate getSubscriptionUpdate(T txn, ContactId c)
-			throws DbException;
+	SubscriptionUpdate getSubscriptionUpdate(T txn, ContactId c,
+			long maxLatency) throws DbException;
 
 	/**
 	 * Returns a collection of transport acks for the given contact, or null if
@@ -434,13 +428,14 @@ interface Database<T> {
 			throws DbException;
 
 	/**
-	 * Returns a collection of transport updates for the given contact, or
-	 * null if no updates are due.
+	 * Returns a collection of transport updates for the given contact and
+	 * updates their expiry times using the given latency. Returns null if no
+	 * updates are due.
 	 * <p>
 	 * Locking: contact read, transport write.
 	 */
-	Collection<TransportUpdate> getTransportUpdates(T txn, ContactId c)
-			throws DbException;
+	Collection<TransportUpdate> getTransportUpdates(T txn, ContactId c,
+			long maxLatency) throws DbException;
 
 	/**
 	 * Returns the version number of the 
@@ -572,6 +567,15 @@ interface Database<T> {
 	void setConnectionWindow(T txn, ContactId c, TransportId t, long period,
 			long centre, byte[] bitmap) throws DbException;
 
+	/**
+	 * Updates the expiry times of the given messages with respect to the given
+	 * contact, using the latency of the transport over which they were sent.
+	 * <p>
+	 * Locking: contact read, message write.
+	 */
+	void setMessageExpiry(T txn, ContactId c, Collection<MessageId> sent,
+			long maxLatency) throws DbException;
+
 	/**
 	 * Sets the user's rating for the given author.
 	 * <p>

briar-core/src/net/sf/briar/db/DatabaseComponentImpl.java

@@ -495,7 +495,7 @@ DatabaseCleaner.Callback {
 		// Get some sendable messages from the database
 		contactLock.readLock().lock();
 		try {
-			messageLock.readLock().lock();
+			messageLock.writeLock().lock();
 			try {
 				subscriptionLock.readLock().lock();
 				try {
@@ -515,17 +515,15 @@ DatabaseCleaner.Callback {
 					subscriptionLock.readLock().unlock();
 				}
 			} finally {
-				messageLock.readLock().unlock();
+				messageLock.writeLock().unlock();
 			}
 			if(messages.isEmpty()) return null;
-			// Calculate the expiry time of the messages
-			long expiry = calculateExpiryTime(maxLatency);
 			// Record the messages as sent
 			messageLock.writeLock().lock();
 			try {
 				T txn = db.startTransaction();
 				try {
-					db.addOutstandingMessages(txn, c, ids, expiry);
+					db.setMessageExpiry(txn, c, ids, maxLatency);
 					db.commitTransaction(txn);
 				} catch(DbException e) {
 					db.abortTransaction(txn);
@@ -580,14 +578,12 @@ DatabaseCleaner.Callback {
 				messageLock.readLock().unlock();
 			}
 			if(messages.isEmpty()) return null;
-			// Calculate the expiry times of the messages
-			long expiry = calculateExpiryTime(maxLatency);
 			// Record the messages as sent
 			messageLock.writeLock().lock();
 			try {
 				T txn = db.startTransaction();
 				try {
-					db.addOutstandingMessages(txn, c, ids, expiry);
+					db.setMessageExpiry(txn, c, ids, maxLatency);
 					db.commitTransaction(txn);
 				} catch(DbException e) {
 					db.abortTransaction(txn);
@@ -602,14 +598,6 @@ DatabaseCleaner.Callback {
 		return Collections.unmodifiableList(messages);
 	}
 
-	private long calculateExpiryTime(long maxLatency) {
-		long roundTrip = maxLatency * 2;
-		if(roundTrip < 0) roundTrip = Long.MAX_VALUE; // Overflow
-		long expiry = clock.currentTimeMillis() + roundTrip;
-		if(expiry < 0) expiry = Long.MAX_VALUE; // Overflow
-		return expiry;
-	}
-
 	public Offer generateOffer(ContactId c, int maxMessages)
 			throws DbException {
 		Collection<MessageId> offered;
@@ -660,7 +648,7 @@ DatabaseCleaner.Callback {
 		}
 	}
 
-	public RetentionUpdate generateRetentionUpdate(ContactId c)
+	public RetentionUpdate generateRetentionUpdate(ContactId c, long maxLatency)
 			throws DbException {
 		contactLock.readLock().lock();
 		try {
@@ -670,7 +658,8 @@ DatabaseCleaner.Callback {
 				try {
 					if(!db.containsContact(txn, c))
 						throw new NoSuchContactException();
-					RetentionUpdate u = db.getRetentionUpdate(txn, c);
+					RetentionUpdate u =
+							db.getRetentionUpdate(txn, c, maxLatency);
 					db.commitTransaction(txn);
 					return u;
 				} catch(DbException e) {
@@ -710,8 +699,8 @@ DatabaseCleaner.Callback {
 		}
 	}
 
-	public SubscriptionUpdate generateSubscriptionUpdate(ContactId c)
-			throws DbException {
+	public SubscriptionUpdate generateSubscriptionUpdate(ContactId c,
+			long maxLatency) throws DbException {
 		contactLock.readLock().lock();
 		try {
 			subscriptionLock.writeLock().lock();
@@ -720,7 +709,8 @@ DatabaseCleaner.Callback {
 				try {
 					if(!db.containsContact(txn, c))
 						throw new NoSuchContactException();
-					SubscriptionUpdate u = db.getSubscriptionUpdate(txn, c);
+					SubscriptionUpdate u =
+							db.getSubscriptionUpdate(txn, c, maxLatency);
 					db.commitTransaction(txn);
 					return u;
 				} catch(DbException e) {
@@ -760,8 +750,8 @@ DatabaseCleaner.Callback {
 		}
 	}
 
-	public Collection<TransportUpdate> generateTransportUpdates(ContactId c)
-			throws DbException {
+	public Collection<TransportUpdate> generateTransportUpdates(ContactId c,
+			long maxLatency) throws DbException {
 		contactLock.readLock().lock();
 		try {
 			transportLock.writeLock().lock();
@@ -771,7 +761,7 @@ DatabaseCleaner.Callback {
 					if(!db.containsContact(txn, c))
 						throw new NoSuchContactException();
 					Collection<TransportUpdate> updates =
-							db.getTransportUpdates(txn, c);
+							db.getTransportUpdates(txn, c, maxLatency);
 					db.commitTransaction(txn);
 					return updates;
 				} catch(DbException e) {

briar-core/src/net/sf/briar/db/JdbcDatabase.java

@@ -69,7 +69,7 @@ abstract class JdbcDatabase implements Database<Connection> {
 	// Locking: contact read, subscription
 	private static final String CREATE_GROUP_VISIBILITIES =
 			"CREATE TABLE groupVisibilities"
-					+ " (contactId INT NOT NULL,"
+					+ " (contactId INT UNSIGNED NOT NULL,"
 					+ " groupId HASH NOT NULL,"
 					+ " FOREIGN KEY (contactId)"
 					+ " REFERENCES contacts (contactId)"
@@ -81,7 +81,7 @@ abstract class JdbcDatabase implements Database<Connection> {
 	// Locking: contact read, subscription
 	private static final String CREATE_CONTACT_GROUPS =
 			"CREATE TABLE contactGroups"
-					+ " (contactId INT NOT NULL,"
+					+ " (contactId INT UNSIGNED NOT NULL,"
 					+ " groupId HASH NOT NULL," // Not a foreign key
 					+ " name VARCHAR NOT NULL,"
 					+ " key BINARY," // Null for unrestricted groups
@@ -93,11 +93,12 @@ abstract class JdbcDatabase implements Database<Connection> {
 	// Locking: contact read, subscription
 	private static final String CREATE_GROUP_VERSIONS =
 			"CREATE TABLE groupVersions"
-					+ " (contactId INT NOT NULL,"
-					+ " localVersion BIGINT NOT NULL,"
-					+ " localAcked BIGINT NOT NULL,"
-					+ " remoteVersion BIGINT NOT NULL,"
+					+ " (contactId INT UNSIGNED NOT NULL,"
+					+ " localVersion BIGINT UNSIGNED NOT NULL,"
+					+ " localAcked BIGINT UNSIGNED NOT NULL,"
+					+ " remoteVersion BIGINT UNSIGNED NOT NULL,"
 					+ " remoteAcked BOOLEAN NOT NULL,"
+					+ " expiry BIGINT UNSIGNED NOT NULL,"
 					+ " PRIMARY KEY (contactId),"
 					+ " FOREIGN KEY (contactid)"
 					+ " REFERENCES contacts (contactId)"
@@ -111,13 +112,13 @@ abstract class JdbcDatabase implements Database<Connection> {
 					+ " groupId HASH," // Null for private messages
 					+ " authorId HASH," // Null for private or anonymous msgs
 					+ " subject VARCHAR NOT NULL,"
-					+ " timestamp BIGINT NOT NULL,"
-					+ " length INT NOT NULL,"
-					+ " bodyStart INT NOT NULL,"
-					+ " bodyLength INT NOT NULL,"
+					+ " timestamp BIGINT UNSIGNED NOT NULL,"
+					+ " length INT UNSIGNED NOT NULL,"
+					+ " bodyStart INT UNSIGNED NOT NULL,"
+					+ " bodyLength INT UNSIGNED NOT NULL,"
 					+ " raw BLOB NOT NULL,"
-					+ " sendability INT," // Null for private messages
-					+ " contactId INT," // Null for group messages
+					+ " sendability INT UNSIGNED," // Null for private messages
+					+ " contactId INT UNSIGNED," // Null for group messages
 					+ " read BOOLEAN NOT NULL,"
 					+ " starred BOOLEAN NOT NULL,"
 					+ " PRIMARY KEY (messageId),"
@@ -144,7 +145,7 @@ abstract class JdbcDatabase implements Database<Connection> {
 	private static final String CREATE_MESSAGES_TO_ACK =
 			"CREATE TABLE messagesToAck"
 					+ " (messageId HASH NOT NULL,"
-					+ " contactId INT NOT NULL,"
+					+ " contactId INT UNSIGNED NOT NULL,"
 					+ " PRIMARY KEY (messageId, contactId),"
 					+ " FOREIGN KEY (contactId)"
 					+ " REFERENCES contacts (contactId)"
@@ -154,9 +155,9 @@ abstract class JdbcDatabase implements Database<Connection> {
 	private static final String CREATE_STATUSES =
 			"CREATE TABLE statuses"
 					+ " (messageId HASH NOT NULL,"
-					+ " contactId INT NOT NULL,"
+					+ " contactId INT UNSIGNED NOT NULL,"
 					+ " seen BOOLEAN NOT NULL,"
-					+ " expiry BIGINT NOT NULL,"
+					+ " expiry BIGINT UNSIGNED NOT NULL,"
 					+ " PRIMARY KEY (messageId, contactId),"
 					+ " FOREIGN KEY (messageId)"
 					+ " REFERENCES messages (messageId)"
@@ -181,12 +182,13 @@ abstract class JdbcDatabase implements Database<Connection> {
 	// Locking: contact read, retention
 	private static final String CREATE_RETENTION_VERSIONS =
 			"CREATE TABLE retentionVersions"
-					+ " (contactId INT NOT NULL,"
-					+ " retention BIGINT NOT NULL,"
-					+ " localVersion BIGINT NOT NULL,"
-					+ " localAcked BIGINT NOT NULL,"
-					+ " remoteVersion BIGINT NOT NULL,"
+					+ " (contactId INT UNSIGNED NOT NULL,"
+					+ " retention BIGINT UNSIGNED NOT NULL,"
+					+ " localVersion BIGINT UNSIGNED NOT NULL,"
+					+ " localAcked BIGINT UNSIGNED NOT NULL,"
+					+ " remoteVersion BIGINT UNSIGNED NOT NULL,"
 					+ " remoteAcked BOOLEAN NOT NULL,"
+					+ " expiry BIGINT UNSIGNED NOT NULL,"
 					+ " PRIMARY KEY (contactId),"
 					+ " FOREIGN KEY (contactId)"
 					+ " REFERENCES contacts (contactId)"
@@ -221,10 +223,11 @@ abstract class JdbcDatabase implements Database<Connection> {
 	// Locking: contact read, transport
 	private static final String CREATE_TRANSPORT_VERSIONS =
 			"CREATE TABLE transportVersions"
-					+ " (contactId HASH NOT NULL,"
+					+ " (contactId INT UNSIGNED NOT NULL,"
 					+ " transportId HASH NOT NULL,"
-					+ " localVersion BIGINT NOT NULL,"
-					+ " localAcked BIGINT NOT NULL,"
+					+ " localVersion BIGINT UNSIGNED NOT NULL,"
+					+ " localAcked BIGINT UNSIGNED NOT NULL,"
+					+ " expiry BIGINT UNSIGNED NOT NULL,"
 					+ " PRIMARY KEY (contactId, transportId),"
 					+ " FOREIGN KEY (contactId)"
 					+ " REFERENCES contacts (contactId)"
@@ -236,7 +239,7 @@ abstract class JdbcDatabase implements Database<Connection> {
 	// Locking: contact read, transport
 	private static final String CREATE_CONTACT_TRANSPORT_PROPS =
 			"CREATE TABLE contactTransportProperties"
-					+ " (contactId INT NOT NULL,"
+					+ " (contactId INT UNSIGNED NOT NULL,"
 					+ " transportId HASH NOT NULL," // Not a foreign key
 					+ " key VARCHAR NOT NULL,"
 					+ " value VARCHAR NOT NULL,"
@@ -248,9 +251,9 @@ abstract class JdbcDatabase implements Database<Connection> {
 	// Locking: contact read, transport
 	private static final String CREATE_CONTACT_TRANSPORT_VERSIONS =
 			"CREATE TABLE contactTransportVersions"
-					+ " (contactId HASH NOT NULL,"
+					+ " (contactId INT UNSIGNED NOT NULL,"
 					+ " transportId HASH NOT NULL," // Not a foreign key
-					+ " remoteVersion BIGINT NOT NULL,"
+					+ " remoteVersion BIGINT UNSIGNED NOT NULL,"
 					+ " remoteAcked BOOLEAN NOT NULL,"
 					+ " PRIMARY KEY (contactId, transportId),"
 					+ " FOREIGN KEY (contactId)"
@@ -260,11 +263,11 @@ abstract class JdbcDatabase implements Database<Connection> {
 	// Locking: contact read, transport read, window
 	private static final String CREATE_ENDPOINTS =
 			"CREATE TABLE endpoints"
-					+ " (contactId INT NOT NULL,"
+					+ " (contactId INT UNSIGNED NOT NULL,"
 					+ " transportId HASH NOT NULL,"
-					+ " epoch BIGINT NOT NULL,"
-					+ " clockDiff BIGINT NOT NULL,"
-					+ " latency BIGINT NOT NULL,"
+					+ " epoch BIGINT UNSIGNED NOT NULL,"
+					+ " clockDiff BIGINT UNSIGNED NOT NULL,"
+					+ " latency BIGINT UNSIGNED NOT NULL,"
 					+ " alice BOOLEAN NOT NULL,"
 					+ " PRIMARY KEY (contactId, transportId),"
 					+ " FOREIGN KEY (contactId)"
@@ -277,12 +280,12 @@ abstract class JdbcDatabase implements Database<Connection> {
 	// Locking: contact read, transport read, window
 	private static final String CREATE_SECRETS =
 			"CREATE TABLE secrets"
-					+ " (contactId INT NOT NULL,"
+					+ " (contactId INT UNSIGNED NOT NULL,"
 					+ " transportId HASH NOT NULL,"
-					+ " period BIGINT NOT NULL,"
+					+ " period BIGINT UNSIGNED NOT NULL,"
 					+ " secret SECRET NOT NULL,"
-					+ " outgoing BIGINT NOT NULL,"
-					+ " centre BIGINT NOT NULL,"
+					+ " outgoing BIGINT UNSIGNED NOT NULL,"
+					+ " centre BIGINT UNSIGNED NOT NULL,"
 					+ " bitmap BINARY NOT NULL,"
 					+ " PRIMARY KEY (contactId, transportId, period),"
 					+ " FOREIGN KEY (contactId)"
@@ -505,9 +508,10 @@ abstract class JdbcDatabase implements Database<Connection> {
 			rs.close();
 			ps.close();
 			// Create a retention version row
-			sql = "INSERT INTO retentionVersions (contactId, retention,"
-					+ " localVersion, localAcked, remoteVersion, remoteAcked)"
-					+ " VALUES (?, ZERO(), ?, ZERO(), ZERO(), TRUE)";
+			sql = "INSERT INTO retentionVersions"
+					+ " (contactId, retention, localVersion, localAcked,"
+					+ " remoteVersion, remoteAcked, expiry)"
+					+ " VALUES (?, ZERO(), ?, ZERO(), ZERO(), TRUE, ZERO())";
 			ps = txn.prepareStatement(sql);
 			ps.setInt(1, c.getInt());
 			ps.setInt(2, 1);
@@ -516,8 +520,8 @@ abstract class JdbcDatabase implements Database<Connection> {
 			ps.close();
 			// Create a group version row
 			sql = "INSERT INTO groupVersions (contactId, localVersion,"
-					+ " localAcked, remoteVersion, remoteAcked)"
-					+ " VALUES (?, ?, ZERO(), ZERO(), TRUE)";
+					+ " localAcked, remoteVersion, remoteAcked, expiry)"
+					+ " VALUES (?, ?, ZERO(), ZERO(), TRUE, ZERO())";
 			ps = txn.prepareStatement(sql);
 			ps.setInt(1, c.getInt());
 			ps.setInt(2, 1);
@@ -533,9 +537,9 @@ abstract class JdbcDatabase implements Database<Connection> {
 			rs.close();
 			ps.close();
 			if(transports.isEmpty()) return c;
-			sql = "INSERT INTO transportVersions"
-					+ " (contactId, transportId, localVersion, localAcked)"
-					+ " VALUES (?, ?, ?, ZERO())";
+			sql = "INSERT INTO transportVersions (contactId, transportId,"
+					+ " localVersion, localAcked, expiry)"
+					+ " VALUES (?, ?, ?, ZERO(), ZERO())";
 			ps = txn.prepareStatement(sql);
 			ps.setInt(1, c.getInt());
 			ps.setInt(3, 1);
@@ -646,33 +650,6 @@ abstract class JdbcDatabase implements Database<Connection> {
 		}
 	}
 
-	public void addOutstandingMessages(Connection txn, ContactId c,
-			Collection<MessageId> sent, long expiry) throws DbException {
-		PreparedStatement ps = null;
-		try {
-			// Update the expiry time of each message
-			String sql = "UPDATE statuses SET expiry = ?"
-					+ " WHERE messageId = ? AND contactId = ?";
-			ps = txn.prepareStatement(sql);
-			ps.setLong(1, expiry);
-			ps.setInt(3, c.getInt());
-			for(MessageId m : sent) {
-				ps.setBytes(2, m.getBytes());
-				ps.addBatch();
-			}
-			int[] batchAffected = ps.executeBatch();
-			if(batchAffected.length != sent.size())
-				throw new DbStateException();
-			for(int i = 0; i < batchAffected.length; i++) {
-				if(batchAffected[i] > 1) throw new DbStateException();
-			}
-			ps.close();
-		} catch(SQLException e) {
-			tryToClose(ps);
-			throw new DbException(e);
-		}
-	}
-
 	public boolean addPrivateMessage(Connection txn, Message m, ContactId c)
 			throws DbException {
 		assert m.getGroup() == null;
@@ -812,9 +789,9 @@ abstract class JdbcDatabase implements Database<Connection> {
 			rs.close();
 			ps.close();
 			if(contacts.isEmpty()) return;
-			sql = "INSERT INTO transportVersions"
-					+ " (contactId, transportId, localVersion, localAcked)"
-					+ " VALUES (?, ?, ?, ZERO())";
+			sql = "INSERT INTO transportVersions (contactId, transportId,"
+					+ " localVersion, localAcked, expiry)"
+					+ " VALUES (?, ?, ?, ZERO(), ZERO())";
 			ps = txn.prepareStatement(sql);
 			ps.setBytes(2, t.getBytes());
 			ps.setInt(3, 1);
@@ -848,7 +825,8 @@ abstract class JdbcDatabase implements Database<Connection> {
 			if(affected != 1) throw new DbStateException();
 			ps.close();
 			// Bump the subscription version
-			sql = "UPDATE groupVersions SET localVersion = localVersion + ?"
+			sql = "UPDATE groupVersions"
+					+ " SET localVersion = localVersion + ?, expiry = ZERO()"
 					+ " WHERE contactId = ?";
 			ps = txn.prepareStatement(sql);
 			ps.setInt(1, 1);
@@ -1444,7 +1422,7 @@ abstract class JdbcDatabase implements Database<Connection> {
 					+ " WHERE m.messageId = ?"
 					+ " AND cg.contactId = ?"
 					+ " AND timestamp >= retention"
-					+ " AND seen = FALSE AND expiry < ?"
+					+ " AND seen = FALSE AND s.expiry < ?"
 					+ " AND sendability > ZERO()";
 			ps = txn.prepareStatement(sql);
 			ps.setBytes(1, m.getBytes());
@@ -1557,19 +1535,23 @@ abstract class JdbcDatabase implements Database<Connection> {
 		}
 	}
 
-	public RetentionUpdate getRetentionUpdate(Connection txn, ContactId c)
-			throws DbException {
+	public RetentionUpdate getRetentionUpdate(Connection txn, ContactId c,
+			long maxLatency) throws DbException {
+		long now = clock.currentTimeMillis();
 		PreparedStatement ps = null;
 		ResultSet rs = null;
 		try {
 			String sql = "SELECT timestamp, localVersion"
 					+ " FROM messages AS m"
 					+ " JOIN retentionVersions AS rv"
-					+ " WHERE rv.contactId = ? AND localVersion > localAcked"
+					+ " WHERE rv.contactId = ?"
+					+ " AND localVersion > localAcked"
+					+ " AND expiry < ?"
 					+ " ORDER BY timestamp LIMIT ?";
 			ps = txn.prepareStatement(sql);
 			ps.setInt(1, c.getInt());
-			ps.setInt(2, 1);
+			ps.setLong(2, now);
+			ps.setInt(3, 1);
 			rs = ps.executeQuery();
 			if(!rs.next()) {
 				rs.close();
@@ -1582,6 +1564,13 @@ abstract class JdbcDatabase implements Database<Connection> {
 			if(rs.next()) throw new DbStateException();
 			rs.close();
 			ps.close();
+			sql = "UPDATE retentionVersions SET expiry = ? WHERE contactId = ?";
+			ps = txn.prepareStatement(sql);
+			ps.setLong(1, calculateExpiry(now, maxLatency));
+			ps.setInt(2, c.getInt());
+			int affected = ps.executeUpdate();
+			if(affected != 1) throw new DbStateException();
+			ps.close();
 			return new RetentionUpdate(retention, version);
 		} catch(SQLException e) {
 			tryToClose(ps);
@@ -1692,7 +1681,7 @@ abstract class JdbcDatabase implements Database<Connection> {
 					+ " AND cg.contactId = s.contactId"
 					+ " WHERE cg.contactId = ?"
 					+ " AND timestamp >= retention"
-					+ " AND seen = FALSE AND expiry < ?"
+					+ " AND seen = FALSE AND s.expiry < ?"
 					+ " AND sendability > ZERO()"
 					+ " ORDER BY timestamp DESC";
 			ps = txn.prepareStatement(sql);
@@ -1822,8 +1811,9 @@ abstract class JdbcDatabase implements Database<Connection> {
 		}
 	}
 
-	public SubscriptionUpdate getSubscriptionUpdate(Connection txn, ContactId c)
-			throws DbException {
+	public SubscriptionUpdate getSubscriptionUpdate(Connection txn, ContactId c,
+			long maxLatency) throws DbException {
+		long now = clock.currentTimeMillis();
 		PreparedStatement ps = null;
 		ResultSet rs = null;
 		try {
@@ -1834,9 +1824,11 @@ abstract class JdbcDatabase implements Database<Connection> {
 					+ " JOIN groupVersions AS ver"
 					+ " ON vis.contactId = ver.contactId"
 					+ " WHERE vis.contactId = ?"
-					+ " AND localVersion > localAcked";
+					+ " AND localVersion > localAcked"
+					+ " AND expiry < ?";
 			ps = txn.prepareStatement(sql);
 			ps.setInt(1, c.getInt());
+			ps.setLong(2, now);
 			rs = ps.executeQuery();
 			List<Group> subs = new ArrayList<Group>();
 			long version = 0;
@@ -1850,6 +1842,13 @@ abstract class JdbcDatabase implements Database<Connection> {
 			rs.close();
 			ps.close();
 			if(subs.isEmpty()) return null;
+			sql = "UPDATE groupVersions SET expiry = ? WHERE contactId = ?";
+			ps = txn.prepareStatement(sql);
+			ps.setLong(1, calculateExpiry(now, maxLatency));
+			ps.setInt(2, c.getInt());
+			int affected = ps.executeUpdate();
+			if(affected != 1) throw new DbStateException();
+			ps.close();
 			subs = Collections.unmodifiableList(subs);
 			return new SubscriptionUpdate(subs, version);
 		} catch(SQLException e) {
@@ -1902,7 +1901,8 @@ abstract class JdbcDatabase implements Database<Connection> {
 	}
 
 	public Collection<TransportUpdate> getTransportUpdates(Connection txn,
-			ContactId c) throws DbException {
+			ContactId c, long maxLatency) throws DbException {
+		long now = clock.currentTimeMillis();
 		PreparedStatement ps = null;
 		ResultSet rs = null;
 		try {
@@ -1911,9 +1911,11 @@ abstract class JdbcDatabase implements Database<Connection> {
 					+ " JOIN transportVersions AS tv"
 					+ " ON tp.transportId = tv.transportId"
 					+ " WHERE tv.contactId = ?"
-					+ " AND localVersion > localAcked";
+					+ " AND localVersion > localAcked"
+					+ " AND expiry < ?";
 			ps = txn.prepareStatement(sql);
 			ps.setInt(1, c.getInt());
+			ps.setLong(2, now);
 			rs = ps.executeQuery();
 			List<TransportUpdate> updates = new ArrayList<TransportUpdate>();
 			TransportId lastId = null;
@@ -1931,6 +1933,22 @@ abstract class JdbcDatabase implements Database<Connection> {
 			rs.close();
 			ps.close();
 			if(updates.isEmpty()) return null;
+			sql = "UPDATE transportVersions SET expiry = ?"
+					+ " WHERE contactId = ? AND transportId = ?";
+			ps = txn.prepareStatement(sql);
+			ps.setLong(1, calculateExpiry(now, maxLatency));
+			ps.setInt(2, c.getInt());
+			for(TransportUpdate u : updates) {
+				ps.setBytes(3, u.getId().getBytes());
+				ps.addBatch();
+			}
+			int [] batchAffected = ps.executeBatch();
+			if(batchAffected.length != updates.size())
+				throw new DbStateException();
+			for(int i = 0; i < batchAffected.length; i++) {
+				if(batchAffected[i] != 1) throw new DbStateException();
+			}
+			ps.close();
 			return Collections.unmodifiableList(updates);
 		} catch(SQLException e) {
 			tryToClose(ps);
@@ -2045,7 +2063,7 @@ abstract class JdbcDatabase implements Database<Connection> {
 					+ " AND cg.contactId = s.contactId"
 					+ " WHERE cg.contactId = ?"
 					+ " AND timestamp >= retention"
-					+ " AND seen = FALSE AND expiry < ?"
+					+ " AND seen = FALSE AND s.expiry < ?"
 					+ " AND sendability > ZERO()"
 					+ " LIMIT ?";
 			ps = txn.prepareStatement(sql);
@@ -2110,7 +2128,7 @@ abstract class JdbcDatabase implements Database<Connection> {
 		PreparedStatement ps = null;
 		try {
 			String sql = "UPDATE retentionVersions"
-					+ " SET localVersion = localVersion + ?";
+					+ " SET localVersion = localVersion + ?, expiry = ZERO()";
 			ps = txn.prepareStatement(sql);
 			ps.setInt(1, 1);
 			ps.executeUpdate();
@@ -2226,7 +2244,8 @@ abstract class JdbcDatabase implements Database<Connection> {
 			ps.close();
 			if(visible.isEmpty()) return;
 			// Bump the subscription version for the affected contacts
-			sql = "UPDATE groupVersions SET localVersion = localVersion + ?"
+			sql = "UPDATE groupVersions"
+					+ " SET localVersion = localVersion + ?, expiry = ZERO()"
 					+ " WHERE contactId = ?";
 			ps = txn.prepareStatement(sql);
 			ps.setInt(1, 1);
@@ -2277,7 +2296,8 @@ abstract class JdbcDatabase implements Database<Connection> {
 			if(affected != 1) throw new DbStateException();
 			ps.close();
 			// Bump the subscription version
-			sql = "UPDATE groupVersions SET localVersion = localVersion + ?"
+			sql = "UPDATE groupVersions"
+					+ " SET localVersion = localVersion + ?, expiry = ZERO()"
 					+ " WHERE contactId = ?";
 			ps = txn.prepareStatement(sql);
 			ps.setInt(1, 1);
@@ -2305,7 +2325,7 @@ abstract class JdbcDatabase implements Database<Connection> {
 		PreparedStatement ps = null;
 		try {
 			String sql = "UPDATE transportVersions"
-					+ " SET localVersion = localVersion + ?"
+					+ " SET localVersion = localVersion + ?, expiry = ZERO()"
 					+ " WHERE transportId = ?";
 			ps = txn.prepareStatement(sql);
 			ps.setInt(1, 1);
@@ -2385,20 +2405,26 @@ abstract class JdbcDatabase implements Database<Connection> {
 		}
 	}
 
-	public void setRetentionTime(Connection txn, ContactId c, long retention,
-			long version) throws DbException {
+	public void setMessageExpiry(Connection txn, ContactId c,
+			Collection<MessageId> sent, long maxLatency) throws DbException {
+		long now = clock.currentTimeMillis();
 		PreparedStatement ps = null;
 		try {
-			String sql = "UPDATE retentionVersions SET retention = ?,"
-					+ " remoteVersion = ?, remoteAcked = FALSE"
-					+ " WHERE contactId = ? AND remoteVersion < ?";
+			String sql = "UPDATE statuses SET expiry = ?"
+					+ " WHERE messageId = ? AND contactId = ?";
 			ps = txn.prepareStatement(sql);
-			ps.setLong(1, retention);
-			ps.setLong(2, version);
+			ps.setLong(1, calculateExpiry(now, maxLatency));
 			ps.setInt(3, c.getInt());
-			ps.setLong(4, version);
-			int affected = ps.executeUpdate();
-			if(affected > 1) throw new DbStateException();
+			for(MessageId m : sent) {
+				ps.setBytes(2, m.getBytes());
+				ps.addBatch();
+			}
+			int[] batchAffected = ps.executeBatch();
+			if(batchAffected.length != sent.size())
+				throw new DbStateException();
+			for(int i = 0; i < batchAffected.length; i++) {
+				if(batchAffected[i] > 1) throw new DbStateException();
+			}
 			ps.close();
 		} catch(SQLException e) {
 			tryToClose(ps);
@@ -2406,25 +2432,12 @@ abstract class JdbcDatabase implements Database<Connection> {
 		}
 	}
 
-	public void setRetentionUpdateAcked(Connection txn, ContactId c,
-			long version) throws DbException {
-		PreparedStatement ps = null;
-		try {
-			String sql = "UPDATE retentionVersions SET localAcked = ?"
-					+ " WHERE contactId = ?"
-					+ " AND localAcked < ? AND localVersion >= ?";
-			ps = txn.prepareStatement(sql);
-			ps.setLong(1, version);
-			ps.setInt(2, c.getInt());
-			ps.setLong(3, version);
-			ps.setLong(4, version);
-			int affected = ps.executeUpdate();
-			if(affected > 1) throw new DbStateException();
-			ps.close();
-		} catch(SQLException e) {
-			tryToClose(ps);
-			throw new DbException(e);
-		}
+	private long calculateExpiry(long now, long maxLatency) {
+		long roundTrip = maxLatency * 2;
+		if(roundTrip < 0) return Long.MAX_VALUE; // Overflow;
+		long expiry = now + roundTrip;
+		if(expiry < 0) return Long.MAX_VALUE; // Overflow
+		return expiry;
 	}
 
 	public Rating setRating(Connection txn, AuthorId a, Rating r)
@@ -2586,6 +2599,48 @@ abstract class JdbcDatabase implements Database<Connection> {
 		}
 	}
 
+	public void setRetentionTime(Connection txn, ContactId c, long retention,
+			long version) throws DbException {
+		PreparedStatement ps = null;
+		try {
+			String sql = "UPDATE retentionVersions SET retention = ?,"
+					+ " remoteVersion = ?, remoteAcked = FALSE"
+					+ " WHERE contactId = ? AND remoteVersion < ?";
+			ps = txn.prepareStatement(sql);
+			ps.setLong(1, retention);
+			ps.setLong(2, version);
+			ps.setInt(3, c.getInt());
+			ps.setLong(4, version);
+			int affected = ps.executeUpdate();
+			if(affected > 1) throw new DbStateException();
+			ps.close();
+		} catch(SQLException e) {
+			tryToClose(ps);
+			throw new DbException(e);
+		}
+	}
+
+	public void setRetentionUpdateAcked(Connection txn, ContactId c,
+			long version) throws DbException {
+		PreparedStatement ps = null;
+		try {
+			String sql = "UPDATE retentionVersions SET localAcked = ?"
+					+ " WHERE contactId = ?"
+					+ " AND localAcked < ? AND localVersion >= ?";
+			ps = txn.prepareStatement(sql);
+			ps.setLong(1, version);
+			ps.setInt(2, c.getInt());
+			ps.setLong(3, version);
+			ps.setLong(4, version);
+			int affected = ps.executeUpdate();
+			if(affected > 1) throw new DbStateException();
+			ps.close();
+		} catch(SQLException e) {
+			tryToClose(ps);
+			throw new DbException(e);
+		}
+	}
+
 	public void setSendability(Connection txn, MessageId m, int sendability)
 			throws DbException {
 		PreparedStatement ps = null;

briar-core/src/net/sf/briar/messaging/duplex/DuplexConnection.java

@@ -3,6 +3,7 @@ package net.sf.briar.messaging.duplex;
 import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
 import static net.sf.briar.api.Rating.GOOD;
+import static net.sf.briar.api.messaging.MessagingConstants.MAX_PACKET_LENGTH;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -87,6 +88,7 @@ abstract class DuplexConnection implements DatabaseListener {
 
 	private final Executor dbExecutor, verificationExecutor;
 	private final MessageVerifier messageVerifier;
+	private final long maxLatency;
 	private final AtomicBoolean canSendOffer, disposed;
 	private final BlockingQueue<Runnable> writerTasks;
 
@@ -116,6 +118,7 @@ abstract class DuplexConnection implements DatabaseListener {
 		this.transport = transport;
 		contactId = ctx.getContactId();
 		transportId = ctx.getTransportId();
+		maxLatency = transport.getMaxLatency();
 		canSendOffer = new AtomicBoolean(false);
 		disposed = new AtomicBoolean(false);
 		writerTasks = new LinkedBlockingQueue<Runnable>();
@@ -467,8 +470,7 @@ abstract class DuplexConnection implements DatabaseListener {
 			assert writer != null;
 			try {
 				Collection<byte[]> batch = db.generateBatch(contactId,
-						Integer.MAX_VALUE, transport.getMaxLatency(),
-						requested);
+						MAX_PACKET_LENGTH, maxLatency, requested);
 				if(batch == null) new GenerateOffer().run();
 				else writerTasks.add(new WriteBatch(batch, requested));
 			} catch(DbException e) {
@@ -583,7 +585,8 @@ abstract class DuplexConnection implements DatabaseListener {
 
 		public void run() {
 			try {
-				RetentionUpdate u = db.generateRetentionUpdate(contactId);
+				RetentionUpdate u =
+						db.generateRetentionUpdate(contactId, maxLatency);
 				if(u != null) writerTasks.add(new WriteRetentionUpdate(u));
 			} catch(DbException e) {
 				if(LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
@@ -649,7 +652,8 @@ abstract class DuplexConnection implements DatabaseListener {
 
 		public void run() {
 			try {
-				SubscriptionUpdate u = db.generateSubscriptionUpdate(contactId);
+				SubscriptionUpdate u =
+						db.generateSubscriptionUpdate(contactId, maxLatency);
 				if(u != null) writerTasks.add(new WriteSubscriptionUpdate(u));
 			} catch(DbException e) {
 				if(LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
@@ -717,7 +721,7 @@ abstract class DuplexConnection implements DatabaseListener {
 		public void run() {
 			try {
 				Collection<TransportUpdate> t =
-						db.generateTransportUpdates(contactId);
+						db.generateTransportUpdates(contactId, maxLatency);
 				if(t != null) writerTasks.add(new WriteTransportUpdates(t));
 			} catch(DbException e) {
 				if(LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);

briar-core/src/net/sf/briar/messaging/simplex/OutgoingSimplexConnection.java

@@ -42,6 +42,7 @@ class OutgoingSimplexConnection {
 	private final SimplexTransportWriter transport;
 	private final ContactId contactId;
 	private final TransportId transportId;
+	private final long maxLatency;
 
 	OutgoingSimplexConnection(DatabaseComponent db,
 			ConnectionRegistry connRegistry,
@@ -56,6 +57,7 @@ class OutgoingSimplexConnection {
 		this.transport = transport;
 		contactId = ctx.getContactId();
 		transportId = ctx.getTransportId();
+		maxLatency = transport.getMaxLatency();
 	}
 
 	void write() {
@@ -69,7 +71,6 @@ class OutgoingSimplexConnection {
 				throw new EOFException();
 			PacketWriter writer = packetWriterFactory.createPacketWriter(out,
 					transport.shouldFlush());
-			long maxLatency = transport.getMaxLatency();
 			// Send the initial packets: updates and acks
 			boolean hasSpace = writeTransportAcks(conn, writer);
 			if(hasSpace) hasSpace = writeTransportUpdates(conn, writer);
@@ -128,7 +129,7 @@ class OutgoingSimplexConnection {
 			PacketWriter writer) throws DbException, IOException {
 		assert conn.getRemainingCapacity() >= MAX_PACKET_LENGTH;
 		Collection<TransportUpdate> updates =
-				db.generateTransportUpdates(contactId);
+				db.generateTransportUpdates(contactId, maxLatency);
 		if(updates == null) return true;
 		for(TransportUpdate u : updates) {
 			writer.writeTransportUpdate(u);
@@ -149,7 +150,8 @@ class OutgoingSimplexConnection {
 	private boolean writeSubscriptionUpdate(ConnectionWriter conn,
 			PacketWriter writer) throws DbException, IOException {
 		assert conn.getRemainingCapacity() >= MAX_PACKET_LENGTH;
-		SubscriptionUpdate u = db.generateSubscriptionUpdate(contactId);
+		SubscriptionUpdate u =
+				db.generateSubscriptionUpdate(contactId, maxLatency);
 		if(u == null) return true;
 		writer.writeSubscriptionUpdate(u);
 		return conn.getRemainingCapacity() >= MAX_PACKET_LENGTH;
@@ -167,7 +169,7 @@ class OutgoingSimplexConnection {
 	private boolean writeRetentionUpdate(ConnectionWriter conn,
 			PacketWriter writer) throws DbException, IOException {
 		assert conn.getRemainingCapacity() >= MAX_PACKET_LENGTH;
-		RetentionUpdate u = db.generateRetentionUpdate(contactId);
+		RetentionUpdate u = db.generateRetentionUpdate(contactId, maxLatency);
 		if(u == null) return true;
 		writer.writeRetentionUpdate(u);
 		return conn.getRemainingCapacity() >= MAX_PACKET_LENGTH;

briar-tests/src/net/sf/briar/db/DatabaseComponentTest.java

@@ -523,7 +523,7 @@ public abstract class DatabaseComponentTest extends BriarTestCase {
 		} catch(NoSuchContactException expected) {}
 
 		try {
-			db.generateRetentionUpdate(contactId);
+			db.generateRetentionUpdate(contactId, 123);
 			fail();
 		} catch(NoSuchContactException expected) {}
 
@@ -533,7 +533,7 @@ public abstract class DatabaseComponentTest extends BriarTestCase {
 		} catch(NoSuchContactException expected) {}
 
 		try {
-			db.generateSubscriptionUpdate(contactId);
+			db.generateSubscriptionUpdate(contactId, 123);
 			fail();
 		} catch(NoSuchContactException expected) {}
 
@@ -543,7 +543,7 @@ public abstract class DatabaseComponentTest extends BriarTestCase {
 		} catch(NoSuchContactException expected) {}
 
 		try {
-			db.generateTransportUpdates(contactId);
+			db.generateTransportUpdates(contactId, 123);
 			fail();
 		} catch(NoSuchContactException expected) {}
 
@@ -696,7 +696,7 @@ public abstract class DatabaseComponentTest extends BriarTestCase {
 			oneOf(database).getRawMessage(txn, messageId1);
 			will(returnValue(raw1));
 			// Record the outstanding messages
-			oneOf(database).addOutstandingMessages(txn, contactId, sendable,
+			oneOf(database).setMessageExpiry(txn, contactId, sendable,
 					Long.MAX_VALUE);
 		}});
 		DatabaseComponent db = createDatabaseComponent(database, cleaner,
@@ -733,8 +733,8 @@ public abstract class DatabaseComponentTest extends BriarTestCase {
 			will(returnValue(raw1)); // Message is sendable
 			oneOf(database).getRawMessageIfSendable(txn, contactId, messageId2);
 			will(returnValue(null)); // Message is not sendable
-			// Record the outstanding message
-			oneOf(database).addOutstandingMessages(txn, contactId,
+			// Mark the message as sent
+			oneOf(database).setMessageExpiry(txn, contactId,
 					Arrays.asList(messageId1), Long.MAX_VALUE);
 		}});
 		DatabaseComponent db = createDatabaseComponent(database, cleaner,
@@ -788,13 +788,14 @@ public abstract class DatabaseComponentTest extends BriarTestCase {
 			allowing(database).commitTransaction(txn);
 			allowing(database).containsContact(txn, contactId);
 			will(returnValue(true));
-			oneOf(database).getSubscriptionUpdate(txn, contactId);
+			oneOf(database).getSubscriptionUpdate(txn, contactId,
+					Long.MAX_VALUE);
 			will(returnValue(null));
 		}});
 		DatabaseComponent db = createDatabaseComponent(database, cleaner,
 				shutdown);
 
-		assertNull(db.generateSubscriptionUpdate(contactId));
+		assertNull(db.generateSubscriptionUpdate(contactId, Long.MAX_VALUE));
 
 		context.assertIsSatisfied();
 	}
@@ -812,13 +813,15 @@ public abstract class DatabaseComponentTest extends BriarTestCase {
 			allowing(database).commitTransaction(txn);
 			allowing(database).containsContact(txn, contactId);
 			will(returnValue(true));
-			oneOf(database).getSubscriptionUpdate(txn, contactId);
+			oneOf(database).getSubscriptionUpdate(txn, contactId,
+					Long.MAX_VALUE);
 			will(returnValue(new SubscriptionUpdate(Arrays.asList(group), 1)));
 		}});
 		DatabaseComponent db = createDatabaseComponent(database, cleaner,
 				shutdown);
 
-		SubscriptionUpdate u = db.generateSubscriptionUpdate(contactId);
+		SubscriptionUpdate u = db.generateSubscriptionUpdate(contactId,
+				Long.MAX_VALUE);
 		assertEquals(Arrays.asList(group), u.getGroups());
 		assertEquals(1, u.getVersion());
 
@@ -838,13 +841,13 @@ public abstract class DatabaseComponentTest extends BriarTestCase {
 			allowing(database).commitTransaction(txn);
 			allowing(database).containsContact(txn, contactId);
 			will(returnValue(true));
-			oneOf(database).getTransportUpdates(txn, contactId);
+			oneOf(database).getTransportUpdates(txn, contactId, Long.MAX_VALUE);
 			will(returnValue(null));
 		}});
 		DatabaseComponent db = createDatabaseComponent(database, cleaner,
 				shutdown);
 
-		assertNull(db.generateTransportUpdates(contactId));
+		assertNull(db.generateTransportUpdates(contactId, Long.MAX_VALUE));
 
 		context.assertIsSatisfied();
 	}
@@ -862,15 +865,15 @@ public abstract class DatabaseComponentTest extends BriarTestCase {
 			allowing(database).commitTransaction(txn);
 			allowing(database).containsContact(txn, contactId);
 			will(returnValue(true));
-			oneOf(database).getTransportUpdates(txn, contactId);
+			oneOf(database).getTransportUpdates(txn, contactId, Long.MAX_VALUE);
 			will(returnValue(Arrays.asList(new TransportUpdate(transportId,
 					transportProperties, 1))));
 		}});
 		DatabaseComponent db = createDatabaseComponent(database, cleaner,
 				shutdown);
 
-		Collection<TransportUpdate> updates = db.generateTransportUpdates(
-				contactId);
+		Collection<TransportUpdate> updates =
+				db.generateTransportUpdates(contactId, Long.MAX_VALUE);
 		assertNotNull(updates);
 		assertEquals(1, updates.size());
 		TransportUpdate u = updates.iterator().next();

briar-tests/src/net/sf/briar/db/H2DatabaseTest.java

@@ -523,7 +523,7 @@ public class H2DatabaseTest extends BriarTestCase {
 		assertTrue(it.hasNext());
 		assertEquals(messageId, it.next());
 		assertFalse(it.hasNext());
-		db.addOutstandingMessages(txn, contactId, Arrays.asList(messageId),
+		db.setMessageExpiry(txn, contactId, Arrays.asList(messageId),
 				Long.MAX_VALUE);
 
 		// The message should no longer be sendable

briar-tests/src/net/sf/briar/messaging/simplex/OutgoingSimplexConnectionTest.java

@@ -113,19 +113,22 @@ public class OutgoingSimplexConnectionTest extends BriarTestCase {
 			oneOf(db).generateTransportAcks(contactId);
 			will(returnValue(null));
 			// No transport updates to send
-			oneOf(db).generateTransportUpdates(contactId);
+			oneOf(db).generateTransportUpdates(with(contactId),
+					with(any(long.class)));
 			will(returnValue(null));
 			// No subscription ack to send
 			oneOf(db).generateSubscriptionAck(contactId);
 			will(returnValue(null));
 			// No subscription update to send
-			oneOf(db).generateSubscriptionUpdate(contactId);
+			oneOf(db).generateSubscriptionUpdate(with(contactId),
+					with(any(long.class)));
 			will(returnValue(null));
 			// No retention ack to send
 			oneOf(db).generateRetentionAck(contactId);
 			will(returnValue(null));
 			// No retention update to send
-			oneOf(db).generateRetentionUpdate(contactId);
+			oneOf(db).generateRetentionUpdate(with(contactId),
+					with(any(long.class)));
 			will(returnValue(null));
 			// No acks to send
 			oneOf(db).generateAck(with(contactId), with(any(int.class)));
@@ -160,19 +163,22 @@ public class OutgoingSimplexConnectionTest extends BriarTestCase {
 			oneOf(db).generateTransportAcks(contactId);
 			will(returnValue(null));
 			// No transport updates to send
-			oneOf(db).generateTransportUpdates(contactId);
+			oneOf(db).generateTransportUpdates(with(contactId),
+					with(any(long.class)));
 			will(returnValue(null));
 			// No subscription ack to send
 			oneOf(db).generateSubscriptionAck(contactId);
 			will(returnValue(null));
 			// No subscription update to send
-			oneOf(db).generateSubscriptionUpdate(contactId);
+			oneOf(db).generateSubscriptionUpdate(with(contactId),
+					with(any(long.class)));
 			will(returnValue(null));
 			// No retention ack to send
 			oneOf(db).generateRetentionAck(contactId);
 			will(returnValue(null));
 			// No retention update to send
-			oneOf(db).generateRetentionUpdate(contactId);
+			oneOf(db).generateRetentionUpdate(with(contactId),
+					with(any(long.class)));
 			will(returnValue(null));
 			// One ack to send
 			oneOf(db).generateAck(with(contactId), with(any(int.class)));