org.eclipse.californium.scandium.dtls

Class ConnectionIdExtension

java.lang.Object

org.eclipse.californium.scandium.dtls.HelloExtension

org.eclipse.californium.scandium.dtls.ConnectionIdExtension

public final class ConnectionIdExtension
extends HelloExtension

Conveys information specified by the connection id DTLS extension.

See draft-ietf-tls-dtls-connection-id for additional details.

Nested Class Summary

Nested classes/interfaces inherited from class org.eclipse.californium.scandium.dtls.HelloExtension

HelloExtension.ExtensionType

Field Summary

Fields inherited from class org.eclipse.californium.scandium.dtls.HelloExtension

LENGTH_BITS, TYPE_BITS

Method Summary

Methods

Modifier and Type	Method and Description
protected void	addExtensionData(org.eclipse.californium.elements.util.DatagramWriter writer) Adds binary encoding of this extension's data.
static ConnectionIdExtension	fromConnectionId(ConnectionId cid) Create connection id extension from connection id.
static ConnectionIdExtension	fromExtensionDataReader(org.eclipse.californium.elements.util.DatagramReader extensionDataReader, InetSocketAddress peerAddress) Create connection id extension from extensions data bytes.
ConnectionId	getConnectionId() Get connection id.
int	getLength() Gets the overall length of this extension's corresponding Extension struct.

Methods inherited from class org.eclipse.californium.scandium.dtls.HelloExtension

fromExtensionDataReader, toByteArray, toString

Methods inherited from class java.lang.Object

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

Method Detail

getConnectionId

public ConnectionId getConnectionId()

Get connection id.

Returns:

connection id

getLength

public int getLength()

Description copied from class: HelloExtension

Gets the overall length of this extension's corresponding Extension struct.

Note that this includes the 2 bytes indicating the extension type.

Specified by:

getLength in class HelloExtension

Returns:

the length in bytes

addExtensionData

protected void addExtensionData(org.eclipse.californium.elements.util.DatagramWriter writer)

Description copied from class: HelloExtension

Adds binary encoding of this extension's data.

This implementation does not do anything. Sub-classes should override this method and use the passed-in writer to add their extension_data bytes to the Extension data structure.

NB: Subclasses MUST NOT write the extension's type code to the writer as this will already have been done by the HelloExtension.toByteArray() method.

Specified by:

addExtensionData in class HelloExtension

Parameters:

writer - the writer to use for serialization

fromConnectionId

public static ConnectionIdExtension fromConnectionId(ConnectionId cid)

Create connection id extension from connection id.

Parameters:

cid - connection id

Returns:

created connection id extension

Throws:

NullPointerException - if cid is null

fromExtensionDataReader

public static ConnectionIdExtension fromExtensionDataReader(org.eclipse.californium.elements.util.DatagramReader extensionDataReader,
                                            InetSocketAddress peerAddress)
                                                     throws HandshakeException

Create connection id extension from extensions data bytes.

Parameters:

extensionDataReader - extension data bytes

peerAddress - peer address

Returns:

created connection id extension

Throws:

NullPointerException - if extensionData is null

HandshakeException - if the extension data could not be decoded