es.tid.rsvp.constructs

Class FFErrorFlowDescriptor

java.lang.Object

es.tid.rsvp.constructs.RSVPConstruct

es.tid.rsvp.constructs.ErrorFlowDescriptor

es.tid.rsvp.constructs.FFErrorFlowDescriptor

All Implemented Interfaces:

RSVPElement

public class FFErrorFlowDescriptor
extends ErrorFlowDescriptor

Represents a FF Style Error 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.

• FF style: <flow descriptor list> ::= <FLOWSPEC> <FILTER_SPEC> | <flow descriptor list> <FF flow descriptor> <FF flow descriptor> ::= [ <FLOWSPEC> ] <FILTER_SPEC>

• Each elementary FF style request is defined by a single (FLOWSPEC, FILTER_SPEC) pair, and multiple such requests may be packed into the flow descriptor list of a single Resv message. A FLOWSPEC object can be omitted if it is identical to the most recent such object that appeared in the list; the first FF flow descriptor must contain a FLOWSPEC.

Author:

Fernando Munoz del Nuevo

Field Summary

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

bytes, length

Constructor Summary

Constructors

Constructor and Description
FFErrorFlowDescriptor() Constructor to be used when a FF Error Flow Descriptor has been received and it is wanted to decode it
FFErrorFlowDescriptor(FlowSpec flowSpec, FilterSpec filterSpec) Constructor to be used when a new FF Error Flow Descriptor it wanted to be created and sent

Method Summary

Modifier and Type	Method and Description
void	decode(byte[] bytes, int offset) FF Error Flow Descriptor decoding method.
void	encode() FF Error Flow Descriptor encoding method.
FilterSpec	getFilterSpec()
FlowSpec	getFlowSpec()
void	setFilterSpec(FilterSpec filterSpec)
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

FFErrorFlowDescriptor

public FFErrorFlowDescriptor()

Constructor to be used when a FF Error Flow Descriptor has been received and it is wanted to decode it

FFErrorFlowDescriptor

public FFErrorFlowDescriptor(FlowSpec flowSpec,
                             FilterSpec filterSpec)
                      throws RSVPProtocolViolationException

Constructor to be used when a new FF Error 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

encode

public void encode()
            throws RSVPProtocolViolationException

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

Specified by:

encode in interface RSVPElement

Overrides:

encode in class ErrorFlowDescriptor

Throws:

RSVPProtocolViolationException

decode

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

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

Overrides:

decode in class ErrorFlowDescriptor

Throws:

RSVPProtocolViolationException

getFlowSpec

public FlowSpec getFlowSpec()

setFlowSpec

public void setFlowSpec(FlowSpec flowSpec)

getFilterSpec

public FilterSpec getFilterSpec()

setFilterSpec

public void setFilterSpec(FilterSpec filterSpec)