es.tid.rsvp.constructs

Class SEFlowDescriptor

java.lang.Object

es.tid.rsvp.constructs.RSVPConstruct

es.tid.rsvp.constructs.FlowDescriptor

es.tid.rsvp.constructs.SEFlowDescriptor

All Implemented Interfaces:

RSVPElement

Direct Known Subclasses:

SEFlowDescriptorTE

public class SEFlowDescriptor
extends FlowDescriptor

Represents a SE Style Flow Descriptor construct, as defined in RFC 2205.

• <flow descriptor list> ::= <empty> | <flow descriptor list> <flow descriptor>

If the INTEGRITY object is present, it must immediately follow the common header. The STYLE object followed by the flow descriptor list must occur at the end of the message, and objects within the flow descriptor list must follow the BNF given below. There are no other requirements on transmission order, although the above order is recommended.

The NHOP (i.e., the RSVP_HOP) object contains the IP address of the interface through which the Resv message was sent and the LIH for the logical interface on which the reservation is required.

The appearance of a RESV_CONFIRM object signals a request for a reservation confirmation and carries the IP address of the receiver to which the ResvConf should be sent. Any number of POLICY_DATA objects may appear.

The BNF above defines a flow descriptor list as simply a list of flow descriptors. The following style-dependent rules specify in more detail the composition of a valid flow descriptor list for each of the reservation styles.

• SE style: <flow descriptor list> ::= <SE flow descriptor> <SE flow descriptor> ::= <FLOWSPEC> <filter spec list> <filter spec list> ::= <FILTER_SPEC> | <filter spec list> <FILTER_SPEC>

  The reservation scope, i.e., the set of senders towards which a particular reservation is to be forwarded (after merging), is determined as follows:

• Explicit sender selection

  The reservation is forwarded to all senders whose SENDER_TEMPLATE objects recorded in the path state match a FILTER_SPEC object in the reservation. This match must follow the rules of Section 3.2.

Author:

Fernando Munoz del Nuevo

Field Summary

Fields inherited from class es.tid.rsvp.constructs.RSVPConstruct

bytes, length

Constructor Summary

Constructors

Constructor and Description
SEFlowDescriptor() Constructor to be used when a SE Flow Descriptor is received and it is wanted to decode it
SEFlowDescriptor(FlowSpec flowSpec, FilterSpec filterSpec) Constructor to be used when a new SE Flow Descriptor it wanted to be created and sent

Method Summary

Modifier and Type	Method and Description
void	addFilterSpec(FilterSpec filterSpec) Method to add new Filter Spec object to the filter Spec list
void	decode(byte[] bytes, int offset) SE Flow Descriptor decoding method.
void	encode() SE Flow Descriptor encoding method.
LinkedList<FilterSpec>	getFilterSpecList()
FlowSpec	getFlowSpec()
void	setFilterSpecList(LinkedList<FilterSpec> filterSpecList)
void	setFlowSpec(FlowSpec flowSpec)

Methods inherited from class es.tid.rsvp.constructs.RSVPConstruct

getBytes, getLength, setBytes, setLength

Methods inherited from class java.lang.Object

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

Constructor Detail

SEFlowDescriptor

public SEFlowDescriptor()

Constructor to be used when a SE Flow Descriptor is received and it is wanted to decode it

SEFlowDescriptor

public SEFlowDescriptor(FlowSpec flowSpec,
                        FilterSpec filterSpec)
                 throws RSVPProtocolViolationException

Constructor to be used when a new SE Flow Descriptor it wanted to be created and sent

Parameters:

flowSpec -

filterSpec -

Throws:

RSVPProtocolViolationException - It is thrown when a mandatory field is not present

Method Detail

addFilterSpec

public void addFilterSpec(FilterSpec filterSpec)

Method to add new Filter Spec object to the filter Spec list

Parameters:

filterSpec -

encode

public void encode()
            throws RSVPProtocolViolationException

SE Flow Descriptor encoding method. In failure case it throws an exception.

Specified by:

encode in interface RSVPElement

Overrides:

encode in class FlowDescriptor

Throws:

RSVPProtocolViolationException

decode

public void decode(byte[] bytes,
                   int offset)
            throws RSVPProtocolViolationException

SE Flow Descriptor decoding method. In failure case it throws an exception.

Overrides:

decode in class FlowDescriptor

Throws:

RSVPProtocolViolationException

getFlowSpec

public FlowSpec getFlowSpec()

setFlowSpec

public void setFlowSpec(FlowSpec flowSpec)

getFilterSpecList

public LinkedList<FilterSpec> getFilterSpecList()

setFilterSpecList

public void setFilterSpecList(LinkedList<FilterSpec> filterSpecList)