apps.mobile
Class MobileCapsule

java.lang.Object
  |
  +--ants.core.Capsule
        |
        +--apps.mobile.MobileCapsule

public class MobileCapsule

extends Capsule

mobile capsule processing - The mobile capsule is used to carry a payload. Its able to lookup any forwarding information on a router to direct itself properly.

Author:

David Wetherall

Fields inherited from class ants.core.Capsule

MAX_TTL

Constructor Summary

MobileCapsule()

MobileCapsule(int na, short sa, short da, ByteArray d)

Method Summary

Xdr	decode() Decode a capsule header from this Capsule's xdr field.
Xdr	encode() Encode this capsule's header into a new Xdr.
boolean	evaluate(Node n) Check for a forwarding address and then ship the packet
int	length() Return the length of the capsule header that all capsule encodings will include.

Methods inherited from class ants.core.Capsule

create, encodeCapsuleForSend, findExtension, findMID, findPID, getDst, getPrevious, getSrc, getTTL, prime, setDst, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

MobileCapsule

public MobileCapsule()

MobileCapsule

public MobileCapsule(int na,
                     short sa,
                     short da,
                     ByteArray d)

Method Detail

length

public int length()

Description copied from class: Capsule

Return the length of the capsule header that all capsule encodings will include.

Overrides:

length in class Capsule

Tags copied from class: Capsule

Returns:

the length of the capsule header

encode

public Xdr encode()

Description copied from class: Capsule

Encode this capsule's header into a new Xdr. Return the new Xdr.

Because this header must go first in the Xdr, this encoder unilaterally sets the xdr buffer pointer to the beginning of the buffer and writes its data there.

The format of the Xdr is:

 MethodID         (16 bytes)
 src address      ( 4 bytes)
 dst address      ( 4 bytes)
 previous address ( 4 bytes)
 TTL              ( 4 bytes)
 

Overrides:
encode in class Capsule

Tags copied from class: Capsule

Returns:
the new Xdr representing this capsule.
See Also: 
#xdr

decode

public Xdr decode()

Description copied from class: Capsule

Decode a capsule header from this Capsule's xdr field.

Overrides:

decode in class Capsule

Tags copied from class: Capsule

Returns:

the new Xdr based on the current xdr.

evaluate

public boolean evaluate(Node n)

Check for a forwarding address and then ship the packet

Overrides:

evaluate in class Capsule

Tags copied from class: Capsule

Parameters:

node - the local node interface

Returns:

an indicationof whether the forwarding was successful.