LossyFdAdapter< AdapterT > Class Template Reference

An adapter class that adds random dropping behavior to an FD adapter. More...

#include <lossy_fd_adapter.hh>

Public Member Functions
	LossyFdAdapter (AdapterT &&adapter)
	Construct from a FileDescriptor appropriate to the AdapterT constructor. More...
	operator const FileDescriptor & () const
	Conversion to a FileDescriptor by returning the underlying AdapterT. More...
std::optional< TCPSegment >	read ()
	Read from the underlying AdapterT instance, potentially dropping the read datagram. More...
void	write (TCPSegment &seg)
	Write to the underlying AdapterT instance, potentially dropping the datagram to be written. More...

Private Member Functions
bool	_should_drop (bool uplink)
	Determine whether or not to drop a given read or write. More...

Private Attributes
AdapterT	_adapter
	The underlying FD adapter. More...
std::mt19937	_rand {get_random_generator()}
	Fast RNG used by _should_drop() More...

Detailed Description

template<typename AdapterT>
class LossyFdAdapter< AdapterT >

An adapter class that adds random dropping behavior to an FD adapter.

Definition at line 15 of file lossy_fd_adapter.hh.

Constructor & Destructor Documentation

LossyFdAdapter()

template<typename AdapterT >

LossyFdAdapter< AdapterT >::LossyFdAdapter ( AdapterT &&  adapter )

inlineexplicit

Construct from a FileDescriptor appropriate to the AdapterT constructor.

Definition at line 37 of file lossy_fd_adapter.hh.

Member Function Documentation

_should_drop()

template<typename AdapterT >

bool LossyFdAdapter< AdapterT >::_should_drop ( bool  uplink )

inlineprivate

Determine whether or not to drop a given read or write.

Parameters

[in]

uplink

is true to use the uplink loss probability, else use the downlink loss probability

Returns

true if the segment should be dropped

Definition at line 26 of file lossy_fd_adapter.hh.

operator const FileDescriptor &()

template<typename AdapterT >

LossyFdAdapter< AdapterT >::operator const FileDescriptor & ( ) const

inline

Conversion to a FileDescriptor by returning the underlying AdapterT.

Definition at line 34 of file lossy_fd_adapter.hh.

read()

template<typename AdapterT >

std::optional<TCPSegment> LossyFdAdapter< AdapterT >::read ( )

inline

Read from the underlying AdapterT instance, potentially dropping the read datagram.

Returns

std::optional<TCPSegment> that is empty if the segment was dropped or if the underlying AdapterT returned an empty value

Definition at line 42 of file lossy_fd_adapter.hh.

write()

template<typename AdapterT >

void LossyFdAdapter< AdapterT >::write ( TCPSegment &  seg )

inline

Write to the underlying AdapterT instance, potentially dropping the datagram to be written.

Parameters

[in]

seg

is the packet to either write or drop

Definition at line 52 of file lossy_fd_adapter.hh.

Member Data Documentation

_adapter

template<typename AdapterT >

AdapterT LossyFdAdapter< AdapterT >::_adapter

private

The underlying FD adapter.

Definition at line 21 of file lossy_fd_adapter.hh.

_rand

template<typename AdapterT >

std::mt19937 LossyFdAdapter< AdapterT >::_rand {get_random_generator()}

private

Fast RNG used by _should_drop()

Definition at line 18 of file lossy_fd_adapter.hh.

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

• /home/cs144/sponge/libsponge/tcp_helpers/lossy_fd_adapter.hh