Difference between revisions of "Unit IGMP"
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=== Type definitions === | === Type definitions === | ||
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Revision as of 00:32, 20 January 2017
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Contents
Description
Ultibo IGMP (Internet Group Management Protocol) unit
To be documented
Constants
IGMP specific constants
IGMP_PROTOCOL_* | Note: Some IGMP definitions are in the Protocol or IP modules | |
IGMP_PROTOCOL_NAME = 'IGMP';
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IGMP constants
IGMP_* IGMP_TIMEOUT = 0;
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Wait forever on a IGMP Read |
IGMP_BUFFER_SIZE = 65536;
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IGMP Receive Buffer Size |
IGMP_HEADER_SIZE = 8;
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SizeOf(TIGMPHeader); |
IGMP_PACKET_SIZE = 8;
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SizeOf(TIGMPPacket) |
IGMP_QUERY_TIMEOUT = 5000;
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IGMP_REPORT_TIMEOUT = 5000;
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IGMP_TRANSMIT_COUNT = 3;
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Type definitions
To be documented
Class definitions
To be documented
Public variables
None defined
Function declarations
Initialization functions
procedure IGMPInit;
Description: To be documented
| Note | None documented |
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IGMP functions
function CheckIGMP(AFamily:Word; ABuffer:Pointer):Boolean;
Description: Verify that the packet is a valid IGMP packet
| Buffer | The complete packet including Transport header |
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function GetIGMPHeaderOffset(AFamily:Word; ABuffer:Pointer):Word;
Description: To be documented
| Buffer | The complete packet including Transport header |
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function GetIGMPHeaderLength(AFamily:Word; ABuffer:Pointer):Word;
Description: To be documented
| Buffer | The complete packet including Transport header |
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function GetIGMPDataOffset(AFamily:Word; ABuffer:Pointer):Word;
Description: To be documented
| Buffer | The complete packet including Transport header |
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function GetIGMPDataLength(AFamily:Word; ABuffer:Pointer):Word;
Description: To be documented
| Buffer | The complete packet including Transport header |
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function ChecksumIGMP(AFamily:Word; ABuffer:Pointer; AOffset,ALength:Word):Word;
Description: Checksum the IGMP Header on Send / Validate the Checksum on Receive
| Note | Checksum is calculated on the whole packet (Header and Data) |
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