forest::RepeatHandler Class Reference

Class to aid in handling repeated control packets. More...

#include <RepeatHandler.h>

Collaboration diagram for forest::RepeatHandler:

Public Member Functions
	RepeatHandler (int)
	Constructor for RepeatHandler. More...
	~RepeatHandler ()
	Destructor for RepeatHandler. More...
int	find (fAdr_t, int64_t)
	Look for a saved packet with a given peer address and sequence number. More...
bool	saveReq (int, fAdr_t, int64_t, int64_t)
	Save a copy of a received request packet. More...
int	saveRep (int, fAdr_t, int64_t)
	Match a reply to a saved request and update. More...
int	expired (int64_t)
	Check for an expired packet and delete it. More...

Private Attributes
int	n
HashMap< Pair< fAdr_t, int64_t > , int, Hash::s32s64 > *	pmap
	maps seqNum->(pktx,repCount)
Dheap< int64_t > *	deadlines
	heap of packets waiting on replies

Detailed Description

Class to aid in handling repeated control packets.

Definition at line 28 of file RepeatHandler.h.

Constructor & Destructor Documentation

forest::RepeatHandler::RepeatHandler

(

int

size)

Constructor for RepeatHandler.

Definition at line 14 of file RepeatHandler.cpp.

forest::RepeatHandler::~RepeatHandler

(

)

Destructor for RepeatHandler.

Definition at line 20 of file RepeatHandler.cpp.

Member Function Documentation

int forest::RepeatHandler::expired

(

int64_t

now)

Check for an expired packet and delete it.

Parameters

now	is the current time

Returns

the packet index of the oldest expired packet, or 0 if there is no expired packet

Definition at line 81 of file RepeatHandler.cpp.

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int forest::RepeatHandler::find	(	fAdr_t	peerAdr,
		int64_t	seqNum
	)

Look for a saved packet with a given peer address and sequence number.

Parameters

peerAdr	is the peer address for the packet
seqNum	is the packet's sequence number

Returns

the packet index for the packet, or 0 if no match;

Definition at line 27 of file RepeatHandler.cpp.

int forest::RepeatHandler::saveRep	(	int	cx,
		fAdr_t	peerAdr,
		int64_t	seqNum
	)

Match a reply to a saved request and update.

The request packet's index is removed from the saved entry and replaced with the reply packet's index.

Parameters

cx	is the packet index for the reply packet corresponding to a saved request packet
peerAdr	is the Forest address of the sender of the original request
seqNum	is the sequence number assigned to the reply

Returns

the index associated with the saved copy of the original request, or 0 if no matching request was found

Definition at line 65 of file RepeatHandler.cpp.

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bool forest::RepeatHandler::saveReq	(	int	cx,
		fAdr_t	peerAdr,
		int64_t	seqNum,
		int64_t	now
	)

Save a copy of a received request packet.

Parameters

cx	is a copy of a received request packet
peerAdr	is the Forest address of the sender
seqNum	is the sequence number assigned to the packet
now	is the current time

Returns

true on success, false on failure

Definition at line 40 of file RepeatHandler.cpp.

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

• forest-net/cpp/include/RepeatHandler.h
• forest-net/cpp/common/RepeatHandler.cpp