itpp::TCP_Receiver_Buffer Class Reference
[Protocols Module]

#include <tcp.h>

List of all members.

Public Member Functions
	TCP_Receiver_Buffer ()
	ADD DOCUMENTATION HERE.
	TCP_Receiver_Buffer (const TCP_Receiver_Buffer &)
	ADD DOCUMENTATION HERE.
	~TCP_Receiver_Buffer ()
	ADD DOCUMENTATION HERE.
void	reset ()
	clears internal list structure
void	write (TCP_Segment newBlock)
	add segment to the queue
void	read (unsigned noOfBytes)
	read up to "noOfBytes" bytes from queue
unsigned	first_block_size () const
	size of first complete block
Sequence_Number	first_byte () const
	first byte stored or missing
Sequence_Number	last_byte () const
	highest byte received (+1)
Sequence_Number	next_expected () const
	first byte missing
unsigned	window () const
	ADD DOCUMENTATION HERE.
std::ostream &	info (std::ostream &os, int detail=0) const
	print info
Protected Attributes
Sequence_Number	fFirstByte
	first byte stored or missing
std::list< TCP_Segment >	fBufList
	ADD DOCUMENTATION HERE.

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Detailed Description

TTCPReceiverBuffer is an important part of TTCPReceiver. It is much more complex than the buffer model at the sender side as it has to keep track of out of order segments. The segments received are combined if possible and the resulting non-contiguous segments are stored in a linked list. Moreover TTCPReceiverBuffer stores the smallest sequence number that has not (yet) been read out by the TCP receiver ("first byte").

Data is written to the buffer by TTCPReceiver using method Write and read out using method Read. Before reading data the TCP receiver has to check whether a data block in the stream is available by calling FirstBlockSize.

Furthermore, TTCPReceiver requires information from TTCPReceiverBuffer, e.g. about the next sequence number that is missing in the stream (NextExpected) or the receiver window that can be advertised to the sender (Window).

See also:

TTCPReceiver

Author:

Bodamer

Kutter

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The documentation for this class was generated from the following file:

• tcp.h