LLRP_SConnection Struct Reference

Structure of an LLRP connection instance. More...

#include <ltkc_connection.h>

List of all members.

Public Attributes
int	fd
unsigned int	nBufferSize
const char *	pConnectErrorStr
LLRP_tSMessage *	pInputQueue
const LLRP_tSTypeRegistry *	pTypeRegistry
struct {
int   bFrameValid
LLRP_tSErrorDetails   ErrorDetails
LLRP_tSFrameExtract   FrameExtract
unsigned int   nBuffer
unsigned char *   pBuffer
}	Recv
struct {
LLRP_tSErrorDetails   ErrorDetails
unsigned int   nBuffer
unsigned char *   pBuffer
}	Send

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Detailed Description

Structure of an LLRP connection instance.

An LLRP connection consists of:

• A file descriptor (fd) likely, but not necessarily, a socket
• An input queue of messages already received. Used to hold asynchronous messages while awaiting a response.
• Receiver state.
  • The receive buffer and count
  • Whether a frame is valid. Valid means that the receive buffer holds a frame and the MessageLength, MessageType, ProtocolVersion, and MessageID are valid (usable). Not valid with a nBuffer greater than 0 means that a frame is being received. Sometimes we want to look at the frame after it has been (or attempted to be) decoded.
  • Top-level frame variables: tSFrameExtract
  • Details of the last receiver error, including I/O errors, end-of-file (EOF), timeout, or decode errors.
• Send state
  • The send buffer and count
  • Details of the last send error, including I/O errors, or encode errors.

Definition at line 64 of file ltkc_connection.h.

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Member Data Documentation

int LLRP_SConnection::bFrameValid

Valid boolean. TRUE means the buffer and frame summary variables are valid (usable). This is always FALSE mid receive

Definition at line 94 of file ltkc_connection.h.

LLRP_tSErrorDetails LLRP_SConnection::ErrorDetails

Details of last I/O or decoder error.

Details of last I/O or encoder error.

Definition at line 100 of file ltkc_connection.h.

int LLRP_SConnection::fd

The file descriptor, probably a socket

Definition at line 67 of file ltkc_connection.h.

LLRP_tSFrameExtract LLRP_SConnection::FrameExtract

Frame summary variables. Derived by LLRP_FrameExtract()

Definition at line 97 of file ltkc_connection.h.

unsigned int LLRP_SConnection::nBuffer

Count of bytes currently in buffer

Count of bytes currently in buffer (from last send)

Definition at line 89 of file ltkc_connection.h.

unsigned int LLRP_SConnection::nBufferSize

Size of the send/recv buffers, below, specified at construct() time

Definition at line 80 of file ltkc_connection.h.

unsigned char* LLRP_SConnection::pBuffer

The buffer. Contains incomming frame.

The buffer. Contains outgoing frame.

Definition at line 86 of file ltkc_connection.h.

const char* LLRP_SConnection::pConnectErrorStr

Error message if openConnectionToReader() or close...() fail

Definition at line 70 of file ltkc_connection.h.

LLRP_tSMessage* LLRP_SConnection::pInputQueue

Head of queue of messages already received. Probably events. the queue is a one-way, NULL terminated linked list.

Definition at line 77 of file ltkc_connection.h.

const LLRP_tSTypeRegistry* LLRP_SConnection::pTypeRegistry

The registry to consult for message/parameter types during decode.

Definition at line 73 of file ltkc_connection.h.

struct { ... } LLRP_SConnection::Recv

Receive state

struct { ... } LLRP_SConnection::Send

Send state

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

• ltkc_connection.h