DHCP

java.lang.Object
- etri.sdn.controller.protocol.packet.BasePacket
- - etri.sdn.controller.protocol.packet.DHCP

All Implemented Interfaces:

IPacket
```
public class DHCP
extends BasePacket
```
Author:

David Erickson (daviderickson@cs.stanford.edu)

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class DHCP.DHCPOptionCode

Nested Classes
Modifier and Type	Class and Description
`static class`	`DHCP.DHCPOptionCode`

Field Summary

Fields
Modifier and Type	Field and Description
`protected java.lang.String`	`bootFileName`
`protected byte[]`	`clientHardwareAddress`
`protected int`	`clientIPAddress`
`protected short`	`flags`
`protected int`	`gatewayIPAddress`
`protected byte`	`hardwareAddressLength`
`protected byte`	`hardwareType`
`protected byte`	`hops`
`static byte`	`HWTYPE_ETHERNET`
`static int`	`MIN_HEADER_LENGTH` ------------------------------------------ \|op (1) \| htype(1) \| hlen(1) \| hops(1) \| ------------------------------------------ \| xid (4) \| ------------------------------------------ \| secs (2) \| flags (2) \| ------------------------------------------ \| ciaddr (4) \| ------------------------------------------ \| yiaddr (4) \| ------------------------------------------ \| siaddr (4) \| ------------------------------------------ \| giaddr (4) \| ------------------------------------------ \| chaddr (16) \| ------------------------------------------ \| sname (64) \| ------------------------------------------ \| file (128) \| ------------------------------------------ \| options (312) \| ------------------------------------------
`protected byte`	`opCode`
`static byte`	`OPCODE_REPLY`
`static byte`	`OPCODE_REQUEST`
`protected java.util.List<DHCPOption>`	`options`
`protected short`	`seconds`
`protected int`	`serverIPAddress`
`protected java.lang.String`	`serverName`
`protected int`	`transactionId`
`protected int`	`yourIPAddress`

Fields inherited from class etri.sdn.controller.protocol.packet.BasePacket
parent, payload

Constructor Summary

Constructors
Constructor and Description

DHCP()

Constructors
Constructor and Description
`DHCP()`

Method Summary

Methods
Modifier and Type	Method and Description
`IPacket`	`deserialize(byte[] data, int offset, int length)` Deserializes this packet layer and all possible payloads
`java.lang.String`	`getBootFileName()`
`byte[]`	`getClientHardwareAddress()`
`int`	`getClientIPAddress()`
`short`	`getFlags()`
`int`	`getGatewayIPAddress()`
`byte`	`getHardwareAddressLength()`
`byte`	`getHardwareType()`
`byte`	`getHops()`
`byte`	`getOpCode()`
`DHCPOption`	`getOption(DHCP.DHCPOptionCode optionCode)` Gets a specific DHCP option parameter
`java.util.List<DHCPOption>`	`getOptions()`
`DHCPPacketType`	`getPacketType()`
`short`	`getSeconds()`
`int`	`getServerIPAddress()`
`java.lang.String`	`getServerName()`
`int`	`getTransactionId()`
`int`	`getYourIPAddress()`
`protected java.lang.String`	`readString(java.nio.ByteBuffer bb, int maxLength)`
`byte[]`	`serialize()` Sets all payloads parent packet if applicable, then serializes this packet and all payloads
`DHCP`	`setBootFileName(java.lang.String bootFileName)`
`DHCP`	`setClientHardwareAddress(byte[] clientHardwareAddress)`
`DHCP`	`setClientIPAddress(int clientIPAddress)`
`DHCP`	`setFlags(short flags)`
`DHCP`	`setGatewayIPAddress(int gatewayIPAddress)`
`DHCP`	`setHardwareAddressLength(byte hardwareAddressLength)`
`DHCP`	`setHardwareType(byte hardwareType)`
`DHCP`	`setHops(byte hops)`
`DHCP`	`setOpCode(byte opCode)`
`DHCP`	`setOptions(java.util.List<DHCPOption> options)`
`DHCP`	`setSeconds(short seconds)`
`DHCP`	`setServerIPAddress(int serverIPAddress)`
`DHCP`	`setServerName(java.lang.String serverName)`
`DHCP`	`setTransactionId(int transactionId)`
`DHCP`	`setYourIPAddress(int yourIPAddress)`
`protected void`	`writeString(java.lang.String string, java.nio.ByteBuffer bb, int maxLength)`

Methods inherited from class etri.sdn.controller.protocol.packet.BasePacket
clone, equals, getParent, getPayload, hashCode, resetChecksum, setParent, setPayload

Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - MIN_HEADER_LENGTH
```
public static int MIN_HEADER_LENGTH
```
    ------------------------------------------ |op (1) | htype(1) | hlen(1) | hops(1) | ------------------------------------------ | xid (4) | ------------------------------------------ | secs (2) | flags (2) | ------------------------------------------ | ciaddr (4) | ------------------------------------------ | yiaddr (4) | ------------------------------------------ | siaddr (4) | ------------------------------------------ | giaddr (4) | ------------------------------------------ | chaddr (16) | ------------------------------------------ | sname (64) | ------------------------------------------ | file (128) | ------------------------------------------ | options (312) | ------------------------------------------
  - OPCODE_REQUEST
```
public static byte OPCODE_REQUEST
```
  - OPCODE_REPLY
```
public static byte OPCODE_REPLY
```
  - HWTYPE_ETHERNET
```
public static byte HWTYPE_ETHERNET
```
  - opCode
```
protected byte opCode
```
  - hardwareType
```
protected byte hardwareType
```
  - hardwareAddressLength
```
protected byte hardwareAddressLength
```
  - hops
```
protected byte hops
```
  - transactionId
```
protected int transactionId
```
  - seconds
```
protected short seconds
```
  - flags
```
protected short flags
```
  - clientIPAddress
```
protected int clientIPAddress
```
  - yourIPAddress
```
protected int yourIPAddress
```
  - serverIPAddress
```
protected int serverIPAddress
```
  - gatewayIPAddress
```
protected int gatewayIPAddress
```
  - clientHardwareAddress
```
protected byte[] clientHardwareAddress
```
  - serverName
```
protected java.lang.String serverName
```
  - bootFileName
```
protected java.lang.String bootFileName
```
  - options
```
protected java.util.List<DHCPOption> options
```
- Constructor Detail
  - DHCP
```
public DHCP()
```
- Method Detail
  - getOpCode
```
public byte getOpCode()
```
    Returns:
    the opCode
  - setOpCode
```
public DHCP setOpCode(byte opCode)
```
    Parameters:
    opCode - the opCode to set
  - getHardwareType
```
public byte getHardwareType()
```
    Returns:
    the hardwareType
  - setHardwareType
```
public DHCP setHardwareType(byte hardwareType)
```
    Parameters:
    hardwareType - the hardwareType to set
  - getHardwareAddressLength
```
public byte getHardwareAddressLength()
```
    Returns:
    the hardwareAddressLength
  - setHardwareAddressLength
```
public DHCP setHardwareAddressLength(byte hardwareAddressLength)
```
    Parameters:
    hardwareAddressLength - the hardwareAddressLength to set
  - getHops
```
public byte getHops()
```
    Returns:
    the hops
  - setHops
```
public DHCP setHops(byte hops)
```
    Parameters:
    hops - the hops to set
  - getTransactionId
```
public int getTransactionId()
```
    Returns:
    the transactionId
  - setTransactionId
```
public DHCP setTransactionId(int transactionId)
```
    Parameters:
    transactionId - the transactionId to set
  - getSeconds
```
public short getSeconds()
```
    Returns:
    the seconds
  - setSeconds
```
public DHCP setSeconds(short seconds)
```
    Parameters:
    seconds - the seconds to set
  - getFlags
```
public short getFlags()
```
    Returns:
    the flags
  - setFlags
```
public DHCP setFlags(short flags)
```
    Parameters:
    flags - the flags to set
  - getClientIPAddress
```
public int getClientIPAddress()
```
    Returns:
    the clientIPAddress
  - setClientIPAddress
```
public DHCP setClientIPAddress(int clientIPAddress)
```
    Parameters:
    clientIPAddress - the clientIPAddress to set
  - getYourIPAddress
```
public int getYourIPAddress()
```
    Returns:
    the yourIPAddress
  - setYourIPAddress
```
public DHCP setYourIPAddress(int yourIPAddress)
```
    Parameters:
    yourIPAddress - the yourIPAddress to set
  - getServerIPAddress
```
public int getServerIPAddress()
```
    Returns:
    the serverIPAddress
  - setServerIPAddress
```
public DHCP setServerIPAddress(int serverIPAddress)
```
    Parameters:
    serverIPAddress - the serverIPAddress to set
  - getGatewayIPAddress
```
public int getGatewayIPAddress()
```
    Returns:
    the gatewayIPAddress
  - setGatewayIPAddress
```
public DHCP setGatewayIPAddress(int gatewayIPAddress)
```
    Parameters:
    gatewayIPAddress - the gatewayIPAddress to set
  - getClientHardwareAddress
```
public byte[] getClientHardwareAddress()
```
    Returns:
    the clientHardwareAddress
  - setClientHardwareAddress
```
public DHCP setClientHardwareAddress(byte[] clientHardwareAddress)
```
    Parameters:
    clientHardwareAddress - the clientHardwareAddress to set
  - getOption
```
public DHCPOption getOption(DHCP.DHCPOptionCode optionCode)
```
    Gets a specific DHCP option parameter
    
    Parameters:
    optionCode - The option code to get
    
    Returns:
    The value of the option if it exists, null otherwise
  - getOptions
```
public java.util.List<DHCPOption> getOptions()
```
    Returns:
    the options
  - setOptions
```
public DHCP setOptions(java.util.List<DHCPOption> options)
```
    Parameters:
    options - the options to set
  - getPacketType
```
public DHCPPacketType getPacketType()
```
    Returns:
    the packetType base on option 53
  - getServerName
```
public java.lang.String getServerName()
```
    Returns:
    the serverName
  - setServerName
```
public DHCP setServerName(java.lang.String serverName)
```
    Parameters:
    serverName - the serverName to set
  - getBootFileName
```
public java.lang.String getBootFileName()
```
    Returns:
    the bootFileName
  - setBootFileName
```
public DHCP setBootFileName(java.lang.String bootFileName)
```
    Parameters:
    bootFileName - the bootFileName to set
  - serialize
```
public byte[] serialize()
```
    Description copied from interface: IPacket
    
    Sets all payloads parent packet if applicable, then serializes this packet and all payloads
    
    Returns:
    a byte[] containing this packet and payloads
  - writeString
```
protected void writeString(java.lang.String string,
               java.nio.ByteBuffer bb,
               int maxLength)
```
  - deserialize
```
public IPacket deserialize(byte[] data,
                  int offset,
                  int length)
```
    Description copied from interface: IPacket
    
    Deserializes this packet layer and all possible payloads
    
    offset - offset to start deserializing from
    length - length of the data to deserialize
    
    Returns:
    the deserialized data
  - readString
```
protected java.lang.String readString(java.nio.ByteBuffer bb,
                          int maxLength)
```

Class DHCP

Nested Class Summary

Field Summary

Fields inherited from class etri.sdn.controller.protocol.packet.BasePacket

Constructor Summary

Method Summary

Methods inherited from class etri.sdn.controller.protocol.packet.BasePacket

Methods inherited from class java.lang.Object

Field Detail

MIN_HEADER_LENGTH

OPCODE_REQUEST

OPCODE_REPLY

HWTYPE_ETHERNET

opCode

hardwareType

hardwareAddressLength

hops

transactionId

seconds

flags

clientIPAddress

yourIPAddress

serverIPAddress

gatewayIPAddress

clientHardwareAddress

serverName

bootFileName

options

Constructor Detail

DHCP

Method Detail

getOpCode

setOpCode

getHardwareType

setHardwareType

getHardwareAddressLength

setHardwareAddressLength

getHops

setHops

getTransactionId

setTransactionId

getSeconds

setSeconds

getFlags

setFlags

getClientIPAddress

setClientIPAddress

getYourIPAddress

setYourIPAddress

getServerIPAddress

setServerIPAddress

getGatewayIPAddress

setGatewayIPAddress

getClientHardwareAddress

setClientHardwareAddress

getOption

getOptions

setOptions

getPacketType

getServerName

setServerName

getBootFileName

setBootFileName

serialize

writeString

deserialize

readString