org.eclipse.californium.scandium.dtls

Class SingleNodeConnectionIdGenerator

java.lang.Object

org.eclipse.californium.scandium.dtls.SingleNodeConnectionIdGenerator

All Implemented Interfaces:

ConnectionIdGenerator

public class SingleNodeConnectionIdGenerator
extends Object
implements ConnectionIdGenerator

Connection id generator for single node systems (no cluster).

Constructor Summary

Constructors

Constructor and Description
SingleNodeConnectionIdGenerator(int connectionIdLength) Create new connection id generator.

Method Summary

Methods

Modifier and Type	Method and Description
ConnectionId	createConnectionId() Creates a connection id.
ConnectionId	read(org.eclipse.californium.elements.util.DatagramReader reader) Read connection id from record header bytes.
boolean	useConnectionId() Indicates, if connection ids are used or just supported.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SingleNodeConnectionIdGenerator

public SingleNodeConnectionIdGenerator(int connectionIdLength)

Create new connection id generator.

Parameters:

connectionIdLength - length of connection id. 0 to support connection id of the other peer, but not using it for this peer.

Throws:

IllegalArgumentException - if length is less than 0 bytes

Method Detail

useConnectionId

public boolean useConnectionId()

Description copied from interface: ConnectionIdGenerator

Indicates, if connection ids are used or just supported.

Specified by:

useConnectionId in interface ConnectionIdGenerator

Returns:

true, if a connection is used, false, if only a connection id from the other peer is supported.

createConnectionId

public ConnectionId createConnectionId()

Description copied from interface: ConnectionIdGenerator

Creates a connection id. The caller must take care to use only unique connection ids. In cases where the generated connection id is already in use, it's intended to create a next connection id calling this method again.

Specified by:

createConnectionId in interface ConnectionIdGenerator

Returns:

created connection id or null, if this generator only supports connection ids from the other peer.

read

public ConnectionId read(org.eclipse.californium.elements.util.DatagramReader reader)

Description copied from interface: ConnectionIdGenerator

Read connection id from record header bytes.

Specified by:

read in interface ConnectionIdGenerator

Parameters:

reader - reader with header bytes at the position of the connection id.

Returns:

read connection id or null, if this generator only supports connection ids from the other peer.