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Moved the messaging protocol one step closer to BSP.

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This breaks backward compatibility for the wire protocol and messages
stored in the database. The database schema version has been
incremented.
This commit is contained in:
akwizgran
2015-05-01 16:58:49 +01:00
parent ffcc8b6b38
commit 32c9ce50d9
33 changed files with 732 additions and 750 deletions
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21
briar-api/src/org/briarproject/api/messaging/MessagingConstants.java
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@@ -1,18 +1,19 @@
package org.briarproject.api.messaging;
import static org.briarproject.api.transport.TransportConstants.MIN_STREAM_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 stream length
* minus the maximum encryption and authentication overhead.
*/
int MAX_PACKET_LENGTH = MIN_STREAM_LENGTH / 2;
/** The current version of the messaging protocol. */
byte PROTOCOL_VERSION = 0;
/** The length of the packet header in bytes. */
int HEADER_LENGTH = 4;
/** The maximum length of the packet payload in bytes. */
int MAX_PAYLOAD_LENGTH = 32 * 1024; // 32 KiB
/** The maximum number of public groups a user may subscribe to. */
int MAX_SUBSCRIPTIONS = 3000;
int MAX_SUBSCRIPTIONS = 300;
/** The maximum length of a group's name in UTF-8 bytes. */
int MAX_GROUP_NAME_LENGTH = 50;
@@ -22,10 +23,10 @@ public interface MessagingConstants {
/**
* 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
* changes in the protocol, this is smaller than the maximum payload length
* even when all the message's other fields have their maximum lengths.
*/
int MAX_BODY_LENGTH = MAX_PACKET_LENGTH - 1024;
int MAX_BODY_LENGTH = MAX_PAYLOAD_LENGTH - 1024;
/** The maximum length of a message's content type in UTF-8 bytes. */
int MAX_CONTENT_TYPE_LENGTH = 50;