Changed the root package from net.sf.briar to org.briarproject.

briar-api/src/org/briarproject/api/messaging/MessagingConstants.java

@@ -0,0 +1,45 @@
+package org.briarproject.api.messaging;
+
+import static org.briarproject.api.transport.TransportConstants.MIN_CONNECTION_LENGTH;
+
+public interface MessagingConstants {
+
+	/**
+	 * The maximum length of a serialised packet in bytes. To allow for future
+	 * changes in the protocol, this is smaller than the minimum connection
+	 * length minus the maximum encryption and authentication overhead.
+	 */
+	int MAX_PACKET_LENGTH = MIN_CONNECTION_LENGTH / 2;
+
+	/** The maximum number of public groups a user may subscribe to. */
+	int MAX_SUBSCRIPTIONS = 3000;
+
+	/** The maximum length of a group's name in UTF-8 bytes. */
+	int MAX_GROUP_NAME_LENGTH = 50;
+
+	/** The length of a group's random salt in bytes. */
+	int GROUP_SALT_LENGTH = 32;
+
+	/**
+	 * The maximum length of a message body in bytes. To allow for future
+	 * changes in the protocol, this is smaller than the maximum packet length
+	 * even when all the message's other fields have their maximum lengths.
+	 */
+	int MAX_BODY_LENGTH = MAX_PACKET_LENGTH - 1024;
+
+	/** The maximum length of a message's content type in UTF-8 bytes. */
+	int MAX_CONTENT_TYPE_LENGTH = 50;
+
+	/** The maximum length of a message's subject line in UTF-8 bytes. */
+	int MAX_SUBJECT_LENGTH = 100;
+
+	/** The length of a message's random salt in bytes. */
+	int MESSAGE_SALT_LENGTH = 32;
+
+	/**
+	 * When calculating the retention time of the database, the timestamp of
+	 * the oldest message in the database is rounded down to a multiple of
+	 * this value to avoid revealing the presence of any particular message.
+	 */
+	int RETENTION_GRANULARITY = 60 * 1000; // 1 minute
+}