TIGMPBuffer

Return to Unit IGMP

Description

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To be documented

Class definitions

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TIGMPBuffer = class(TSocketBuffer)

constructor Create(ASocket:TTransportSocket);
destructor Destroy; override;
private
FOffset:Word;	Offset to RemoteAddress
FLength:Word;	Length of RemoteAddress
FRead:Pointer;	Pointer to Next Read from Buffer
FWrite:Pointer;	Pointer to Next Write to Buffer
FCount:LongWord;	Number of Packets in Buffer
FFirst:PIGMPPacket;	Pointer to First Packet
FLast:PIGMPPacket;	Pointer to Last Packet
function AddPacket(ASize:Integer):Boolean;
function RemovePacket:Boolean;
procedure FlushPackets;
protected
procedure SetSize(ASize:LongWord); override;
public
function GetNext:Integer;
function GetCount:LongWord;
function ReadBuffer(var ABuffer; var ASize:Integer; ARemoteAddress:Pointer; AFlags:Integer):Boolean;
function WriteBuffer(var ABuffer; ASize:Integer; ARemoteAddress:Pointer):Boolean;

Function declarations

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constructor TIGMPBuffer.Create(ASocket:TTransportSocket);

Description: To be documented

Note	None documented

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destructor TIGMPBuffer.Destroy;

Description: To be documented

Note	None documented

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function TIGMPBuffer.AddPacket(ASize:Integer):Boolean;

Description: Adds a new Packet as the Last packet in the Buffer

Note	None documented

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function TIGMPBuffer.RemovePacket:Boolean;

Description: Removes the First packet from the Buffer

Note	None documented

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procedure TIGMPBuffer.FlushPackets;

Description: To be documented

Note	None documented

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procedure TIGMPBuffer.SetSize(ASize:LongWord);

Description: Setting the Size clears any current Packets

Note	None documented

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function TIGMPBuffer.GetNext:Integer;

Description: To be documented

Note	None documented

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function TIGMPBuffer.GetCount:LongWord;

Description: To be documented

Note	None documented

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function TIGMPBuffer.ReadBuffer(var ABuffer; var ASize:Integer; ARemoteAddress:Pointer; AFlags:Integer):Boolean;

Description: Stored Packet contains the Data and if IP_HDRINCL the Transport Header

Size	Passed Size contains size of Buffer and should return the size of Packet
Flags	Flags is for MSG_PEEK and MSG_OOB when applicable

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function TIGMPBuffer.WriteBuffer(var ABuffer; ASize:Integer; ARemoteAddress:Pointer):Boolean;

Description: Supplied Buffer contains the Data and if IP_HDRINCL the Transport Header

Note	Data that will not fit in the Buffer is simply discarded

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