tcp_client Class Reference

This class implements the TCP/IP client communication. More...

#include <class_tcp.h>

Public Member Functions
int	Connect (void)
	Connect to server. More...
int	Disconnect (void)
	Disconnect from server. More...
int	GetSocket ()
	Get socket value. More...
int	perr (const char *text)
	Print error message. More...
int	Receive (char *data, int size, bool peek=false, int *number=NULL, int flags=0)
	Read data. More...
int	Send (char *data, int size)
	Send data. More...
	tcp_client (const char *ip, int port, bool async_comm=false)
	Constructor of the class. More...
	~tcp_client ()
	Destructor of the class. More...

Public Attributes
bool	connected
	Status of the connection. More...
int	err
	Last error code. More...
char	err_msg [1024]
	Last error message. More...

Private Attributes
bool	async
	Asynchronous comm. More...
int	ret
	Return value for functions. More...
struct sockaddr_in	server
	Configuration structure. More...
int	sock
	Socket identification. More...

Detailed Description

This class implements the TCP/IP client communication.

Definition at line 46 of file class_tcp.h.

Constructor & Destructor Documentation

tcp_client::tcp_client	(	const char *	ip,
		int	port,
		bool	async_comm = false
	)

Constructor of the class.

The class constructor will setup the socket but will NOT open it.

Parameters

ip	Ip of the server
port	Port in which to communicate
async_comm	Activate the asynchronous communication.

Definition at line 29 of file class_tcp.cpp.

tcp_client::~tcp_client

(

)

Destructor of the class.

It disconnects the communication.

Definition at line 52 of file class_tcp.cpp.

Member Function Documentation

int tcp_client::Connect

(

void

)

Connect to server.

This function connects to the server in case of error sets the err_msg variable and the err code accordingly.

Returns

0 in case of success or -1 in error

Definition at line 57 of file class_tcp.cpp.

int tcp_client::Disconnect

(

void

)

Disconnect from server.

This function disconnects to the server in case of error sets the err_msg variable and the err code accordingly.

Returns

0 in case of success or -1 in error

Definition at line 80 of file class_tcp.cpp.

int tcp_client::GetSocket

(

)

Get socket value.

Get the current socket value.

Returns

Socket value.

Definition at line 184 of file class_tcp.cpp.

int tcp_client::perr

(

const char *

text

)

Print error message.

This function prints the last error of this class, this is only valid for the last function called, if a function previous to that had a error it will not be printed.

Parameters

text	additional text to print along with the error.

Returns

0 if theres no error to print or -1 in error

Definition at line 174 of file class_tcp.cpp.

int tcp_client::Receive	(	char *	data,
		int	size,
		bool	peek = false,
		int *	number = NULL,
		int	flags = 0
	)

Read data.

This function reads information from the memory buffer, if the peek variable is true the information is not erased from the buffer.

Parameters

data	where to store the data
size	maximum length to store
peek	if true data is not removed from the server
number	number of bytes received
flags	flags of the recv call

Returns

0 in case of success or -1 in error

Definition at line 131 of file class_tcp.cpp.

int tcp_client::Send	(	char *	data,
		int	size
	)

Send data.

This function sends information to the server, in case of error sets the err_msg variable and the err code accordingly.

Parameters

data	information to send, this is a byte array
size	size of the information to send

Returns

0 in case of success or -1 in error

Definition at line 97 of file class_tcp.cpp.

Member Data Documentation

bool tcp_client::async

private

Asynchronous comm.

Definition at line 147 of file class_tcp.h.

bool tcp_client::connected

Status of the connection.

Definition at line 134 of file class_tcp.h.

int tcp_client::err

Last error code.

Definition at line 128 of file class_tcp.h.

char tcp_client::err_msg[1024]

Last error message.

Definition at line 131 of file class_tcp.h.

int tcp_client::ret

private

Return value for functions.

Definition at line 144 of file class_tcp.h.

struct sockaddr_in tcp_client::server

private

Configuration structure.

Definition at line 141 of file class_tcp.h.

int tcp_client::sock

private

Socket identification.

Definition at line 138 of file class_tcp.h.

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

• class_tcp.h
• class_tcp.cpp