es.tid.rsvp.constructs

Class WFFlowDescriptor

java.lang.Object

es.tid.rsvp.constructs.RSVPConstruct

es.tid.rsvp.constructs.FlowDescriptor

es.tid.rsvp.constructs.WFFlowDescriptor

All Implemented Interfaces:

RSVPElement

public class WFFlowDescriptor
extends FlowDescriptor

Represents a WF 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.

• WF Style: <flow descriptor list> ::= <WF flow descriptor> <WF flow descriptor> ::= <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
WFFlowDescriptor() Builder to be used when a received WF Flow Descriptor and it is wanted to decode it
WFFlowDescriptor(FlowSpec flowSpec) Builder to be used when a new WF Flow Descriptor it wanted to be created and sent

Method Summary

Modifier and Type	Method and Description
void	decode(byte[] bytes, int offset) Sender Descriptor decoding method.
void	encode() WF Flow Descriptor encoding method.
FlowSpec	getFlowSpec()
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

WFFlowDescriptor

public WFFlowDescriptor()

Builder to be used when a received WF Flow Descriptor and it is wanted to decode it

WFFlowDescriptor

public WFFlowDescriptor(FlowSpec flowSpec)
                 throws RSVPProtocolViolationException

Builder to be used when a new WF Flow Descriptor it wanted to be created and sent

Parameters:

flowSpec -

Throws:

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

Method Detail

encode

public void encode()
            throws RSVPProtocolViolationException

WF 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

Sender 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)