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Changed maximum packet and message sizes in preparation for new

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transport format.
This commit is contained in:
akwizgran
2011-08-18 15:14:48 +02:00
parent 5e0aadd373
commit 4dd303d9e1
40 changed files with 210 additions and 146 deletions
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6
api/net/sf/briar/api/protocol/Ack.java
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@@ -5,12 +5,6 @@ import java.util.Collection;
/** A packet acknowledging receipt of one or more batches. */
public interface Ack {
/**
* The maximum size of a serialised ack, excluding encryption and
* authentication.
*/
static final int MAX_SIZE = (1024 * 1024) - 100;
/** Returns the IDs of the acknowledged batches. */
Collection<BatchId> getBatchIds();
}

7
api/net/sf/briar/api/protocol/Author.java
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@@ -5,12 +5,15 @@ import net.sf.briar.api.serial.Writable;
/** A pseudonymous author of messages. */
public interface Author extends Writable {
/** The maximum length of an author's name, in UTF-8 bytes. */
/** The maximum length of an author's name in UTF-8 bytes. */
static final int MAX_NAME_LENGTH = 50;
/** The maximum length of an author's public key, in bytes. */
/** The maximum length of an author's public key in bytes. */
static final int MAX_PUBLIC_KEY_LENGTH = 100;
/** The maximum length of a serialised author in bytes. */
static final int MAX_LENGTH = MAX_NAME_LENGTH + MAX_PUBLIC_KEY_LENGTH + 5;
/** Returns the author's unique identifier. */
AuthorId getId();

6
api/net/sf/briar/api/protocol/Batch.java
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@@ -5,12 +5,6 @@ import java.util.Collection;
/** A packet containing messages. */
public interface Batch {
/**
* The maximum size of a serialised batch, excluding encryption and
* authentication.
*/
static final int MAX_SIZE = (1024 * 1024) - 100;
/** Returns the batch's unique identifier. */
BatchId getId();

7
api/net/sf/briar/api/protocol/Group.java
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@@ -5,12 +5,15 @@ import net.sf.briar.api.serial.Writable;
/** A group to which users may subscribe. */
public interface Group extends Writable {
/** The maximum length of a group's name, in UTF-8 bytes. */
/** The maximum length of a group's name in UTF-8 bytes. */
static final int MAX_NAME_LENGTH = 50;
/** The maximum length of a group's public key, in bytes. */
/** The maximum length of a group's public key in bytes. */
static final int MAX_PUBLIC_KEY_LENGTH = 100;
/** The maximum length of a serialised group in bytes. */
static final int MAX_LENGTH = MAX_NAME_LENGTH + MAX_PUBLIC_KEY_LENGTH + 5;
/** Returns the group's unique identifier. */
GroupId getId();

17
api/net/sf/briar/api/protocol/Message.java
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@@ -2,12 +2,23 @@ package net.sf.briar.api.protocol;
public interface Message {
/** The maximum size of a serialised message, in bytes. */
static final int MAX_SIZE = (1024 * 1024) - 200;
/**
* The maximum length of a serialised message in bytes. To allow for future
* changes in the batch format, this is smaller than the amount of data
* that can fit in a batch using the current format.
*/
static final int MAX_LENGTH = ProtocolConstants.MAX_PACKET_LENGTH - 1024;
/** The maximum size of a signature, in bytes. */
/** The maximum length of a signature in bytes. */
static final int MAX_SIGNATURE_LENGTH = 100;
/**
* The maximum length of a message body in bytes. To allow for future
* changes in the message format, this is smaller than the amount of data
* that can fit in a message using the current format.
*/
static final int MAX_BODY_LENGTH = MAX_LENGTH - 1024;
/** Returns the message's unique identifier. */
MessageId getId();

6
api/net/sf/briar/api/protocol/Offer.java
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@@ -5,12 +5,6 @@ import java.util.Collection;
/** A packet offering the recipient some messages. */
public interface Offer {
/**
* The maximum size of a serialised offer, excluding encryption and
* authentication.
*/
static final int MAX_SIZE = (1024 * 1024) - 100;
/** Returns the offer's unique identifier. */
OfferId getId();

14
api/net/sf/briar/api/protocol/ProtocolConstants.java Normal file
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@@ -0,0 +1,14 @@
package net.sf.briar.api.protocol;
import net.sf.briar.api.transport.TransportConstants;
public interface ProtocolConstants {
/**
* The maximum length of a serialised packet in bytes. To allow for future
* changes in the frame format, this is smaller than the amount of data
* that can fit in a frame using the current format.
*/
static final int MAX_PACKET_LENGTH =
TransportConstants.MAX_FRAME_LENGTH - 1024;
}

6
api/net/sf/briar/api/protocol/Request.java
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@@ -5,12 +5,6 @@ import java.util.BitSet;
/** A packet requesting some or all of the messages from an offer. */
public interface Request {
/**
* The maximum size of a serialised request, exlcuding encryption and
* authentication.
*/
static final int MAX_SIZE = (1024 * 1024) - 100;
/**
* Returns the unique identifier of the offer to which this request
* responds.

6
api/net/sf/briar/api/protocol/SubscriptionUpdate.java
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@@ -5,12 +5,6 @@ import java.util.Map;
/** A packet updating the sender's subscriptions. */
public interface SubscriptionUpdate {
/**
* The maximum size of a serialized subscription update, excluding
* encryption and authentication.
*/
static final int MAX_SIZE = (1024 * 1024) - 100;
/** Returns the subscriptions contained in the update. */
Map<Group, Long> getSubscriptions();

6
api/net/sf/briar/api/protocol/TransportUpdate.java
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@@ -5,12 +5,6 @@ import java.util.Map;
/** A packet updating the sender's transport properties. */
public interface TransportUpdate {
/**
* The maximum size of a serialised transport update, excluding
* encryption and authentication.
*/
static final int MAX_SIZE = (1024 * 1024) - 100;
/** Returns the transport properties contained in the update. */
Map<String, Map<String, String>> getTransports();

2
api/net/sf/briar/api/protocol/UniqueId.java
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@@ -6,8 +6,8 @@ import net.sf.briar.api.serial.Writable;
public abstract class UniqueId implements Writable {
/** The length of a unique identifier in bytes. */
public static final int LENGTH = 32;
public static final int SERIALISED_LENGTH = LENGTH + 3;
protected final byte[] id;

22
api/net/sf/briar/api/transport/TransportConstants.java Normal file
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@@ -0,0 +1,22 @@
package net.sf.briar.api.transport;
public interface TransportConstants {
/**
* The maximum length of a frame in bytes, including the header and footer.
*/
static final int MAX_FRAME_LENGTH = 65536; // 2^16
/** The length in bytes of the tag that uniquely identifies a connection. */
static final int TAG_LENGTH = 16;
/**
* The maximum value that can be represented as an unsigned 16-bit integer.
*/
static final int MAX_16_BIT_UNSIGNED = 65535; // 2^16 - 1
/**
* The maximum value that can be represented as an unsigned 32-bit integer.
*/
static final long MAX_32_BIT_UNSIGNED = 4294967295L; // 2^32 - 1
}