Unit ICMPv6

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Description

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Ultibo ICMPv6 (Internet Control Message Protocol version 6) unit

To be documented

Constants

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ICMPv6 specific constants ICMP6_PROTOCOL_*

Note: Some ICMPV6 definitions are in the Protocol or IPv6 modules
ICMP6_PROTOCOL_NAME = 'ICMPV6';

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ICMPv6 constants ICMP6_*

ICMP6_TIMEOUT = 0;	Wait forever on a ICMP6 Read
ICMP6_BUFFER_SIZE = 65536;	ICMP6 Receive Buffer Size
ICMP6_HEADER_SIZE = 5;	SizeOf(TICMP6Header);
ICMP6_PACKET_SIZE = 8;	SizeOf(TICMP6Packet)

Type definitions

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ICMPv6 header

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PICMP6Header = ^TICMP6Header;

TICMP6Header = packed record

Note: Some ICMPv6 definitions are in the Protocol or IPv6 modules
ICMP6Type:Byte;	ICMP_UNREACH etc
Code:Byte;	ICMP_UNREACH_NET,ICMP_UNREACH_PORT etc
Checksum:Word;	1s Compliment checksum of Structure
CurrentHopLimit:Byte;

ICMPv6 packet

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PICMP6Packet = ^TICMP6Packet;

TICMP6Packet = record

Note: 8 Bytes (Used by ICMP6Buffer)
Size:LongWord;	LongWord to keep size even
Next:PICMP6Packet;	Followed by RemoteAddress (4 or 16 Bytes)

Class definitions

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To be documented

Public variables

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None defined

Function declarations

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Initialization functions

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procedure ICMP6Init;

Description: To be documented

Note	None documented

ICMPv6 functions

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function CheckICMP6(AFamily:Word; ABuffer:Pointer):Boolean;

Description: Verify that the packet is a valid ICMP6 packet

Buffer	The complete packet including Transport header

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function GetICMP6HeaderOffset(AFamily:Word; ABuffer:Pointer):Word;

Description: To be documented

Buffer	The complete packet including Transport header

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function GetICMP6HeaderLength(AFamily:Word; ABuffer:Pointer):Word;

Description: To be documented

Buffer	The complete packet including Transport header

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function GetICMP6DataOffset(AFamily:Word; ABuffer:Pointer):Word;

Description: To be documented

Buffer	The complete packet including Transport header

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function GetICMP6DataLength(AFamily:Word; ABuffer:Pointer):Word;

Description: To be documented

Buffer	The complete packet including Transport header

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function ChecksumICMP6(AFamily:Word; ABuffer:Pointer; AOffset,ALength:Word):Word;

Description: Checksum the ICMP6 Header on Send / Validate the Checksum on Receive

Note	None documented

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