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itpp::TCP_Receiver_Buffer Class Reference

#include <itpp/protocol/tcp.h>

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_SegmentfBufList
 ADD DOCUMENTATION HERE.
 

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

Definition at line 519 of file tcp.h.

Member Function Documentation

◆ first_byte()

Sequence_Number itpp::TCP_Receiver_Buffer::first_byte ( ) const
inline

first byte stored or missing

Definition at line 685 of file tcp.h.

References fFirstByte.

◆ last_byte()

Sequence_Number itpp::TCP_Receiver_Buffer::last_byte ( ) const
inline

highest byte received (+1)

Definition at line 691 of file tcp.h.

References fBufList, and fFirstByte.

◆ next_expected()

Sequence_Number itpp::TCP_Receiver_Buffer::next_expected ( ) const
inline

first byte missing

Definition at line 702 of file tcp.h.

References fFirstByte, and first_block_size().

Member Data Documentation

◆ fFirstByte

Sequence_Number itpp::TCP_Receiver_Buffer::fFirstByte
protected

first byte stored or missing

Definition at line 544 of file tcp.h.

Referenced by first_byte(), last_byte(), and next_expected().

◆ fBufList

std::list<TCP_Segment> itpp::TCP_Receiver_Buffer::fBufList
protected

ADD DOCUMENTATION HERE.

Definition at line 547 of file tcp.h.

Referenced by last_byte().


The documentation for this class was generated from the following file:
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Generated on Tue Dec 10 2024 04:49:37 for IT++ by Doxygen 1.12.0