IT++ Logo
Public Member Functions | Public Attributes | List of all members
itpp::TCP_Receiver Class Reference

#include <itpp/protocol/tcp.h>

Public Member Functions

 TCP_Receiver (int label)
 ADD DOCUMENTATION HERE.
 
virtual ~TCP_Receiver ()
 ADD DOCUMENTATION HERE.
 
virtual void setup ()
 ADD DOCUMENTATION HERE.
 
virtual void release (std::string trace_filename="")
 ADD DOCUMENTATION HERE.
 
itpp::Packetget_user_message ()
 called by higher layer
 
bool is_user_message_available ()
 called by higher layer
 
virtual void set_debug (const bool enable_debug=true)
 ADD DOCUMENTATION HERE.
 
virtual void set_debug (bool enable_debug, bool enable_signal_debug)
 ADD DOCUMENTATION HERE.
 
virtual void set_trace (const bool enable_trace=true)
 ADD DOCUMENTATION HERE.
 
virtual void save_trace (std::string filename)
 ADD DOCUMENTATION HERE.
 

Public Attributes

Signal< itpp::Packet * > tcp_send_ack
 ADD DOCUMENTATION HERE.
 
Slot< TCP_Receiver,
itpp::Packet * > 
tcp_receive
 ADD DOCUMENTATION HERE.
 
Signal< int > tcp_new_data
 indicate new data to higher layer
 
Slot< TCP_Receiver, std::string > tcp_release
 ADD DOCUMENTATION HERE.
 

Detailed Description

The TCP receiver models the receiver side of a TCP connection. It is connected to the network via ports "input" and "ackoutput" and to an entity modelling higher layers (e.g. a sink) via port "output".

Incoming TCP messages are used to update the receiver buffer and as a trigger to send an ACK message back to the TCP sender. If the "DelayedACK" option is used ACKs are only sent for every second packet (unless in the case of out of order packets). If the received packet is not out of order (i.e. the next expected sequence number in the byte stream has increased) new data is delivered to the higher layer. This delivery may be delayed in the receiver itself (user block processing delay) or by the subsequent entity if it blocks on incoming message indications.

A couple of parameters can be specified in the input file including delayed ACK timer value and timer granularity. The value of MSS should be equal to the one specified at the receiver side although it is only required for delayed ACK and receiver SWSA algorithms.

Like the TCP sender TTCPReceiver provides a simplified connection control via methods Setup and Release. Those methods are only used to reset internal state variables. No control messages are sent over the network, i.e. the receiver assumes that the corresponding methods at the sender side are called as well.

See Also
TTCPReceiverSet
TTCPReceiverBuffer
TCP_Sender
Author
Grevent
Lorang
Bodamer

Definition at line 582 of file tcp.h.


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

Generated on Sat Jul 6 2013 10:54:34 for IT++ by Doxygen 1.8.2