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TInet6HeaderICMP Class Reference

class TInet6HeaderICMP

ICMPv6 header common part layout.

The basic ICMP header format only covers the common part (4 bytes) and 4 bytes of the Message Body (can be accesses as "Parameter")

Extract from RFC-2462: General format of ICMP message

 0                   1                   2                   3
 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|     Type      |     Code      |          Checksum             |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                                                               |
+                         Message Body                          +
|                                                               |

Public Member Functions
TInt	Checksum()
TUint8	Code()
TUint8 *	EndPtr()
TInt	HeaderLength()
TInt	MaxHeaderLength()
TInt	MinHeaderLength()
TUint32	Parameter()
void	SetChecksum(TInt)
void	SetCode(TUint8)
void	SetParameter(TUint32)
void	SetType(TUint8)
TUint8	Type()

Public Attributes
TUint8	i
TUint32	iAlign

Protected Attributes
union TInet6HeaderICMP::@50	@51

Member Functions Documentation

Checksum()

TInt

Checksum

(

)

const [inline]

Gets the Checksum from the header.

Code()

TUint8

Code

(

)

const [inline]

Gets the ICMPv6 code from the header.

EndPtr()

TUint8 *

EndPtr

(

)

const [inline]

Gets a pointer to the byte following the header.

HeaderLength()

TInt

HeaderLength

(

)

const [inline]

Gets the header length.

Note:

This length is not the true length of the ICMP header. This only covers the fixed part.

MaxHeaderLength()

TInt

MaxHeaderLength

(

)

[static, inline]

Gets the maximum header length.

Note:

This length is not the true length of the ICMP header. This only covers the fixed part.

MinHeaderLength()

TInt

MinHeaderLength

(

)

[static, inline]

Gets the minimum header length.

Parameter()

TUint32

Parameter

(

)

const [inline]

Gets the ICMPv6 Parameter.

Accesses the first 4 bytes of ICMP message body, and assumes they form a 32 bit integer in network byte order. Returns this integer in host order.

SetChecksum(TInt)

void

SetChecksum

(

TInt

aSum

)

[inline]

Sets the Checksum.

Parameters

TInt aSum

The Checksum [0..65535] (16 least significant bits stored as is (assumed to be in NETWORK byte order).

SetCode(TUint8)

void

SetCode

(

TUint8

aCode

)

[inline]

Sets the ICMPv6 code.

Parameters

TUint8 aCode

ICMPv6 code [0..255]

SetParameter(TUint32)

void

SetParameter

(

TUint32

aValue

)

[inline]

Sets the ICMPv6 Parameter.

The value is converted into network byte order and stored as the first 4 bytes of the ICMP message body.

Parameters

TUint32 aValue

The parameter.

SetType(TUint8)

void

SetType

(

TUint8

aType

)

[inline]

Sets the ICMPv6 type.

Parameters

TUint8 aType

ICMPv6 type [0..255]

Type()

TUint8

Type

(

)

const [inline]

Gets the ICMPv6 type from the header.

Member Data Documentation

union TInet6HeaderICMP::@50 @51

union TInet6HeaderICMP::@50

@51

[protected]

TUint8 i

TUint8

TUint32 iAlign

TUint32

iAlign