Unit ICMP

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Description

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Ultibo ICMP (Internet Control Message Protocol) unit

To be documented

Constants

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ICMP specific constants ICMP_PROTOCOL_*

Note: Some ICMP definitions are in the Protocol or IP modules
ICMP_PROTOCOL_NAME = 'ICMP';

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ICMP constants ICMP_*

ICMP_TIMEOUT = 0;	Wait forever on a ICMP Read
ICMP_BUFFER_SIZE = 65536;	ICMP Receive Buffer Size
ICMP_HEADER_SIZE = 8;	SizeOf(TICMPHeader); ICMP.Solicit
ICMP_PACKET_SIZE = 8;	SizeOf(TICMPPacket)
ICMP_ROUTER_TIMEOUT = 60000;

Type definitions

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To be documented

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 ICMPInit;

Description: To be documented

Note	None documented

ICMP functions

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

Description: Verify that the packet is a valid ICMP packet

Buffer	The complete packet including Transport header

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

Description: To be documented

Buffer	The complete packet including Transport header

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

Description: To be documented

Buffer	The complete packet including Transport header

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

Description: To be documented

Buffer	The complete packet including Transport header

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

Description: To be documented

Buffer	The complete packet including Transport header

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

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

Note	None documented

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