Data Structures
struct	NETW_MSG
	network message, array of char and int More...

Macros
#define	NETMSG_BOX 8
	Network Message is box retrieving reply: (int x , int y , int z , N_STR *data )

#define	NETMSG_GET_BOX 7
	Network Message is box retrieve: int x , int y , int z.

#define	NETMSG_IDENT_REPLY_NOK 2
	Network Message is identification reply NON OK: (int)type , (int)id , (N_STR )name , (N_STR )password.

#define	NETMSG_IDENT_REPLY_OK 1
	Network Message is identification reply OK : (int)type , (int)id , (N_STR )name , (N_STR )password.

#define	NETMSG_IDENT_REQUEST 0
	Network Message is identification request: (int)type , (int)id , (N_STR )name , (N_STR )password.

#define	NETMSG_PING_REPLY 6
	Network Message is ping reply: (int)type , (int)id_from , (int)id_to.

#define	NETMSG_PING_REQUEST 5
	Network Message is ping request: (int)type , (int)id_from , (int)id_to.

#define	NETMSG_POSITION 4
	Network Message position: (int)type , (int)id , (int)X , (int)Y , (int)x_shift , (int)y_shift ,(int)vx ,(int)vy , (int)speed , (int)acceleration , (int)time_stamp.

#define	NETMSG_QUIT 9
	Network asking for exit.

#define	NETMSG_STRING 3
	Network Message is string: (int)type , (int)id , (N_STR )name , (N_STR )chan , (N_STR *)text , (int)color.

#define	NETW_MSG_MAX_STRING_LENGTH (1024UL * 1024UL * 1024UL)
	Maximum allowed length for a single string inside a network message (default: 1 GB).

Functions
int	add_int_to_msg (NETW_MSG *msg, int value)
	add an int to the message

int	add_nb_to_msg (NETW_MSG *msg, double value)
	add a float/double to the message

int	add_nstrdup_to_msg (NETW_MSG msg, N_STR str)
	add a duplicate of a N_STR to the message

int	add_nstrptr_to_msg (NETW_MSG msg, N_STR str)
	add a N_STR pointer to the message without copying

int	add_strdup_to_msg (NETW_MSG msg, const char str)
	add a duplicate of a char string to the message

int	create_msg (NETW_MSG **msg)
	create a NETW_MSG object

int	delete_msg (NETW_MSG **msg)
	delete a NETW_MSG object

double	double_swap (double value)
	swap bytes of a double value

int	empty_msg (NETW_MSG **msg)
	empty a NETW_MSG object

int	get_int_from_msg (NETW_MSG msg, int value)
	get an int from the message

int	get_nb_from_msg (NETW_MSG msg, double value)
	get a float/double value from the message

int	get_nstr_from_msg (NETW_MSG msg, N_STR *str)
	get a N_STR string from the message

int	get_str_from_msg (NETW_MSG msg, char *str)
	get a char string from the message

double	htond (double value)
	convert host double to network byte order

NETW_MSG *	make_msg_from_str (N_STR *str)
	deserialize a N_STR into a NETW_MSG

N_STR *	make_str_from_msg (NETW_MSG *msg)
	serialize a NETW_MSG into a single N_STR

N_STR *	netmsg_make_ident (int type, int id, N_STR name, N_STR passwd)
	create an identification network message

N_STR *	netmsg_make_ping (int type, int id_from, int id_to, int time)
	create a ping network message

N_STR *	netmsg_make_position_msg (int id, double X, double Y, double vx, double vy, double acc_x, double acc_y, int time_stamp)
	create a position network message

N_STR *	netmsg_make_quit_msg (void)
	create a quit network message

N_STR *	netmsg_make_string_msg (int id_from, int id_to, N_STR name, N_STR chan, N_STR *txt, int color)
	create a string network message

int	netw_get_ident (N_STR msg, int type, int ident, N_STR name, N_STR *passwd)
	get identification data from a network message

int	netw_get_ping (N_STR msg, int type, int from, int to, int *time)
	get ping data from a network message

int	netw_get_position (N_STR msg, int id, double X, double Y, double vx, double vy, double acc_x, double acc_y, int *time_stamp)
	get position data from a network message

int	netw_get_quit (N_STR *msg)
	get quit data from a network message

int	netw_get_string (N_STR msg, int id, N_STR name, N_STR chan, N_STR *txt, int color)
	get string data from a network message

int	netw_msg_get_type (N_STR *msg)
	get the type of a network message.

double	ntohd (double value)
	convert network double to host byte order

Detailed Description

Data Structure Documentation

◆ NETW_MSG

struct NETW_MSG

network message, array of char and int

Examples: ex_accept_pool_client.c, ex_gui_network.c, and ex_network.h.

Definition at line 72 of file n_network_msg.h.

Collaboration diagram for NETW_MSG:

Data Fields
LIST *	tabflt	array of casted double value
LIST *	tabint	array of int
LIST *	tabstr	array of N_STR

Macro Definition Documentation

◆ NETMSG_BOX

#define NETMSG_BOX 8

Network Message is box retrieving reply: (int x , int y , int z , N_STR *data )

Definition at line 61 of file n_network_msg.h.

◆ NETMSG_GET_BOX

#define NETMSG_GET_BOX 7

Network Message is box retrieve: int x , int y , int z.

Definition at line 59 of file n_network_msg.h.

◆ NETMSG_IDENT_REPLY_NOK

#define NETMSG_IDENT_REPLY_NOK 2

Network Message is identification reply NON OK: (int)type , (int)id , (N_STR *)name , (N_STR *)password.

Definition at line 49 of file n_network_msg.h.

◆ NETMSG_IDENT_REPLY_OK

#define NETMSG_IDENT_REPLY_OK 1

Network Message is identification reply OK : (int)type , (int)id , (N_STR *)name , (N_STR *)password.

Definition at line 47 of file n_network_msg.h.

◆ NETMSG_IDENT_REQUEST

#define NETMSG_IDENT_REQUEST 0

Network Message is identification request: (int)type , (int)id , (N_STR *)name , (N_STR *)password.

Definition at line 45 of file n_network_msg.h.

◆ NETMSG_PING_REPLY

#define NETMSG_PING_REPLY 6

Network Message is ping reply: (int)type , (int)id_from , (int)id_to.

Definition at line 57 of file n_network_msg.h.

◆ NETMSG_PING_REQUEST

#define NETMSG_PING_REQUEST 5

Network Message is ping request: (int)type , (int)id_from , (int)id_to.

Definition at line 55 of file n_network_msg.h.

◆ NETMSG_POSITION

#define NETMSG_POSITION 4

Network Message position: (int)type , (int)id , (int)X , (int)Y , (int)x_shift , (int)y_shift ,(int)vx ,(int)vy , (int)speed , (int)acceleration , (int)time_stamp.

Definition at line 53 of file n_network_msg.h.

◆ NETMSG_QUIT

#define NETMSG_QUIT 9

Network asking for exit.

Definition at line 63 of file n_network_msg.h.

◆ NETMSG_STRING

#define NETMSG_STRING 3

Network Message is string: (int)type , (int)id , (N_STR *)name , (N_STR *)chan , (N_STR *)text , (int)color.

Definition at line 51 of file n_network_msg.h.

◆ NETW_MSG_MAX_STRING_LENGTH

#define NETW_MSG_MAX_STRING_LENGTH (1024UL * 1024UL * 1024UL)

Maximum allowed length for a single string inside a network message (default: 1 GB).

Override before including this header to change the limit.

Definition at line 68 of file n_network_msg.h.

Function Documentation

◆ add_int_to_msg()

int add_int_to_msg	(	NETW_MSG *	msg,
		int	value
	)

add an int to the message

Parameters

msg	A NETW_MSG *object to complete with the value
value	The value to add to the message

Returns: TRUE or FALSE

Definition at line 178 of file n_network_msg.c.

References __n_assert, Free, list_push(), Malloc, and NETW_MSG::tabint.

Referenced by build_chat_msg(), client_worker_echo(), make_msg_from_str(), netmsg_make_ident(), netmsg_make_ping(), netmsg_make_position_msg(), netmsg_make_quit_msg(), netmsg_make_string_msg(), and send_net_datas().

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◆ add_nb_to_msg()

int add_nb_to_msg	(	NETW_MSG *	msg,
		double	value
	)

add a float/double to the message

Parameters

msg	A NETW_MSG *object to complete with the value
value	The value to add to the message

Warning: The floating value will be rounded by the network serialization !

Returns: TRUE or FALSE

Definition at line 155 of file n_network_msg.c.

References __n_assert, Free, list_push(), Malloc, and NETW_MSG::tabflt.

Referenced by make_msg_from_str(), and netmsg_make_position_msg().

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◆ add_nstrdup_to_msg()

int add_nstrdup_to_msg	(	NETW_MSG *	msg,
		N_STR *	str
	)

add a duplicate of a N_STR to the message

Parameters

msg	A NETW_MSG *object to complete with the string
str	The string to add to the message

Returns: TRUE or FALSE

Definition at line 214 of file n_network_msg.c.

References __n_assert, N_STR::data, free_nstr_ptr(), list_push(), nstrdup(), and NETW_MSG::tabstr.

Referenced by netmsg_make_ident(), netmsg_make_string_msg(), and send_net_datas().

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◆ add_nstrptr_to_msg()

int add_nstrptr_to_msg	(	NETW_MSG *	msg,
		N_STR *	str
	)

add a N_STR pointer to the message without copying

Parameters

msg	A NETW_MSG *object to complete with the string
str	The string to add to the message

Returns: TRUE or FALSE

Definition at line 201 of file n_network_msg.c.

References __n_assert, N_STR::data, free_nstr_ptr(), list_push(), and NETW_MSG::tabstr.

Referenced by client_worker_echo(), make_msg_from_str(), and send_net_datas().

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◆ add_strdup_to_msg()

int add_strdup_to_msg	(	NETW_MSG *	msg,
		const char *	str
	)

add a duplicate of a char string to the message

Parameters

msg	A NETW_MSG *object to complete with the string
str	The string to add to the message

Returns: TRUE or FALSE

Definition at line 229 of file n_network_msg.c.

References __n_assert, char_to_nstr(), free_nstr_ptr(), list_push(), and NETW_MSG::tabstr.

Referenced by build_chat_msg().

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◆ create_msg()

int create_msg ( NETW_MSG ** msg )

create a NETW_MSG object

Parameters

msg	A NETW_MSG *object

Returns: TRUE or FALSE

Definition at line 89 of file n_network_msg.c.

References __n_assert, Free, list_destroy(), LOG_ERR, Malloc, MAX_LIST_ITEMS, n_log, and new_generic_list().

Referenced by build_chat_msg(), client_worker_echo(), make_msg_from_str(), netmsg_make_ident(), netmsg_make_ping(), netmsg_make_position_msg(), netmsg_make_quit_msg(), netmsg_make_string_msg(), and send_net_datas().

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◆ delete_msg()

int delete_msg ( NETW_MSG ** msg )

delete a NETW_MSG object

Parameters

msg	A NETW_MSG *object to delete

Returns: TRUE or FALSE

Definition at line 113 of file n_network_msg.c.

References __n_assert, Free, list_destroy(), LOG_ERR, and n_log.

Referenced by build_chat_msg(), client_worker_echo(), decode_chat_msg(), get_net_datas(), make_msg_from_str(), netmsg_make_ident(), netmsg_make_ping(), netmsg_make_position_msg(), netmsg_make_quit_msg(), netmsg_make_string_msg(), netw_get_ident(), netw_get_ping(), netw_get_position(), netw_get_quit(), netw_get_string(), and send_net_datas().

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◆ double_swap()

double double_swap ( double value )

swap bytes of a double value

Parameters

value The double to swap

Returns: A swapped double

Definition at line 36 of file n_network_msg.c.

Referenced by htond(), and ntohd().

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◆ empty_msg()

int empty_msg ( NETW_MSG ** msg )

empty a NETW_MSG object

Parameters

msg	A NETW_MSG **object

Returns: TRUE or FALSE

Definition at line 138 of file n_network_msg.c.

References __n_assert, and list_empty().

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◆ get_int_from_msg()

int get_int_from_msg	(	NETW_MSG *	msg,
		int *	value
	)

get an int from the message

Parameters

msg	A NETW_MSG *object for extracting int
value	An int pointer where the result will be stored

Returns: TRUE or FALSE

Definition at line 265 of file n_network_msg.c.

References __n_assert, Free, list_shift, and NETW_MSG::tabint.

Referenced by decode_chat_msg(), get_net_datas(), netw_get_ident(), netw_get_ping(), netw_get_position(), netw_get_quit(), and netw_get_string().

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◆ get_nb_from_msg()

int get_nb_from_msg	(	NETW_MSG *	msg,
		double *	value
	)

get a float/double value from the message

Parameters

msg	A NETW_MSG *object for extracting number
value	A double pointer where the result will be stored

Returns: TRUE or FALSE

Definition at line 245 of file n_network_msg.c.

References __n_assert, Free, list_shift, and NETW_MSG::tabflt.

Referenced by netw_get_position().

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◆ get_nstr_from_msg()

int get_nstr_from_msg	(	NETW_MSG *	msg,
		N_STR **	value
	)

get a N_STR string from the message

Parameters

msg	The NETW_MSG where you have a str to get
value	A pointer to a NULL N_STR for storage

Returns: TRUE or FALSE

Definition at line 286 of file n_network_msg.c.

References __n_assert, list_shift, LOG_ERR, n_log, and NETW_MSG::tabstr.

Referenced by get_net_datas(), netw_get_ident(), and netw_get_string().

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◆ get_str_from_msg()

int get_str_from_msg	(	NETW_MSG *	msg,
		char **	value
	)

get a char string from the message

Parameters

msg	The NETW_MSG where you have a str to get
value	A pointer to a NULL N_STR for storage

Returns: TRUE or FALSE

Definition at line 308 of file n_network_msg.c.

References __n_assert, N_STR::data, Free, list_shift, LOG_ERR, n_log, and NETW_MSG::tabstr.

Referenced by decode_chat_msg().

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◆ htond()

double htond ( double value )

convert host double to network byte order

Parameters

value The value to eventually swap

Returns: The modified value

Definition at line 59 of file n_network_msg.c.

References double_swap().

Referenced by make_str_from_msg().

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◆ make_msg_from_str()

NETW_MSG * make_msg_from_str ( N_STR * str )

deserialize a N_STR into a NETW_MSG

Parameters

str	A N_STR structure to convert into a NETW_MSG one

Returns: A pointer to the generated NETW_MSG, do not forget to free it after use !

Definition at line 456 of file n_network_msg.c.

References __n_assert, add_int_to_msg(), add_nb_to_msg(), add_nstrptr_to_msg(), create_msg(), N_STR::data, delete_msg(), Free, N_STR::length, LOG_ERR, Malloc, n_log, NETW_MSG_MAX_STRING_LENGTH, ntohd(), and N_STR::written.

Referenced by decode_chat_msg(), get_net_datas(), netw_get_ident(), netw_get_ping(), netw_get_position(), netw_get_quit(), and netw_get_string().

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◆ make_str_from_msg()

N_STR * make_str_from_msg ( NETW_MSG * msg )

serialize a NETW_MSG into a single N_STR

Parameters

msg	A NETW_MSG structure to convert into a N_STR one

Returns: A pointer to the generated N_STR, do not forget to free it after use !

Definition at line 331 of file n_network_msg.c.

References __n_assert, N_STR::data, Free, free_nstr, htond(), N_STR::length, LOG_ERR, Malloc, n_log, LIST::nb_items, LIST_NODE::next, LIST_NODE::ptr, LIST::start, NETW_MSG::tabflt, NETW_MSG::tabint, NETW_MSG::tabstr, and N_STR::written.

Referenced by build_chat_msg(), client_worker_echo(), netmsg_make_ident(), netmsg_make_ping(), netmsg_make_position_msg(), netmsg_make_quit_msg(), netmsg_make_string_msg(), and send_net_datas().

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◆ netmsg_make_ident()

N_STR * netmsg_make_ident	(	int	type,
		int	id,
		N_STR *	name,
		N_STR *	passwd
	)

create an identification network message

Parameters

type	type of identification ( NETW_IDENT_REQUEST , NETW_IDENT_NEW )
id	The ID of the sending client
name	Username
passwd	Password

Returns: N_STR *netmsg or NULL

Definition at line 666 of file n_network_msg.c.

References __n_assert, add_int_to_msg(), add_nstrdup_to_msg(), create_msg(), delete_msg(), and make_str_from_msg().

Referenced by netw_send_ident().

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◆ netmsg_make_ping()

N_STR * netmsg_make_ping	(	int	type,
		int	id_from,
		int	id_to,
		int	time
	)

create a ping network message

Parameters

type	NETW_PING_REQUEST or NETW_PING_REPLY
id_from	Identifiant of the sender
id_to	Identifiant of the destination, -1 if the serveur itslef is targetted
time	The time it was when the ping was sended

Returns: A N_STR *message or NULL

Definition at line 626 of file n_network_msg.c.

References __n_assert, add_int_to_msg(), create_msg(), delete_msg(), and make_str_from_msg().

Referenced by netw_send_ping().

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◆ netmsg_make_position_msg()

N_STR * netmsg_make_position_msg	(	int	id,
		double	X,
		double	Y,
		double	vx,
		double	vy,
		double	acc_x,
		double	acc_y,
		int	time_stamp
	)

create a position network message

Parameters

id	The ID of the sending client
X	x position
Y	y position
vx	x speed
vy	y speed
acc_x	x acceleration
acc_y	y acceleration
time_stamp	time when the position were copier

Returns: N_STR *netmsg or NULL

Definition at line 709 of file n_network_msg.c.

References __n_assert, add_int_to_msg(), add_nb_to_msg(), create_msg(), delete_msg(), make_str_from_msg(), and NETMSG_POSITION.

Referenced by netw_send_position().

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◆ netmsg_make_quit_msg()

N_STR * netmsg_make_quit_msg ( void )

create a quit network message

Returns: N_STR *netmsg or NULL

Definition at line 820 of file n_network_msg.c.

References __n_assert, add_int_to_msg(), create_msg(), delete_msg(), make_str_from_msg(), and NETMSG_QUIT.

Referenced by netw_send_quit().

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◆ netmsg_make_string_msg()

N_STR * netmsg_make_string_msg	(	int	id_from,
		int	id_to,
		N_STR *	name,
		N_STR *	chan,
		N_STR *	txt,
		int	color
	)

create a string network message

Parameters

id_from	The ID of the sending client
id_to	id of the destination
name	name of the user
chan	targeted channel
txt	text to send
color	color of the text

Returns: N_STR *netmsg or NULL

Definition at line 769 of file n_network_msg.c.

References __n_assert, add_int_to_msg(), add_nstrdup_to_msg(), create_msg(), delete_msg(), make_str_from_msg(), and NETMSG_STRING.

Referenced by netw_send_string_to(), and netw_send_string_to_all().

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◆ netw_get_ident()

int netw_get_ident	(	N_STR *	msg,
		int *	type,
		int *	ident,
		N_STR **	name,
		N_STR **	passwd
	)

get identification data from a network message

Parameters

msg	The source string from which we are going to extract the data
type	NETMSG_IDENT_NEW , NETMSG_IDENT_REPLY_OK , NETMSG_IDENT_REPLY_NOK , NETMSG_IDENT_REQUEST
ident	ID for the user
name	Name of the user
passwd	Password of the user

Returns: TRUE or FALSE

Definition at line 882 of file n_network_msg.c.

References __n_assert, delete_msg(), free_nstr, get_int_from_msg(), get_nstr_from_msg(), LOG_ERR, make_msg_from_str(), n_log, NETMSG_IDENT_REPLY_NOK, NETMSG_IDENT_REPLY_OK, and NETMSG_IDENT_REQUEST.

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◆ netw_get_ping()

int netw_get_ping	(	N_STR *	msg,
		int *	type,
		int *	from,
		int *	to,
		int *	time
	)

get ping data from a network message

Parameters

msg	The source string from which we are going to extract the data
type	NETW_PING_REQUEST or NETW_PING_REPLY
from	Identifiant of the sender
to	Targetted Identifiant, -1 for server ping
time	The time it was when the ping was sended

Returns: TRUE or FALSE

Definition at line 1039 of file n_network_msg.c.

References __n_assert, delete_msg(), get_int_from_msg(), LOG_ERR, make_msg_from_str(), n_log, NETMSG_PING_REPLY, and NETMSG_PING_REQUEST.

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◆ netw_get_position()

int netw_get_position	(	N_STR *	msg,
		int *	id,
		double *	X,
		double *	Y,
		double *	vx,
		double *	vy,
		double *	acc_x,
		double *	acc_y,
		int *	time_stamp
	)

get position data from a network message

Parameters

msg	The source string from which we are going to extract the data
id
X	X position inside a big grid
Y	Y position inside a big grid
vx	X speed
vy	Y speed
acc_x	X acceleration
acc_y	Y acceleration
time_stamp	Current Time when it was sended (for some delta we would want to compute )

Returns: TRUE or FALSE

Definition at line 931 of file n_network_msg.c.

References __n_assert, delete_msg(), get_int_from_msg(), get_nb_from_msg(), LOG_ERR, make_msg_from_str(), n_log, and NETMSG_POSITION.

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◆ netw_get_quit()

int netw_get_quit ( N_STR * msg )

get quit data from a network message

Parameters

msg	The source string from which we are going to extract the data

Returns: TRUE or FALSE

Definition at line 1077 of file n_network_msg.c.

References __n_assert, delete_msg(), get_int_from_msg(), make_msg_from_str(), and NETMSG_QUIT.

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◆ netw_get_string()

int netw_get_string	(	N_STR *	msg,
		int *	id,
		N_STR **	name,
		N_STR **	chan,
		N_STR **	txt,
		int *	color
	)

get string data from a network message

Parameters

msg	The source string from which we are going to extract the data
id	The ID of the sending client
name	Name of user
chan	Target Channel, if any. Pass "ALL" to target the default channel
txt	The text to send
color	The color of the text

Returns: TRUE or FALSE

Definition at line 982 of file n_network_msg.c.

References __n_assert, delete_msg(), free_nstr, get_int_from_msg(), get_nstr_from_msg(), LOG_ERR, make_msg_from_str(), n_log, and NETMSG_STRING.

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◆ netw_msg_get_type()

int netw_msg_get_type ( N_STR * msg )

get the type of a network message.

Returns the type value (>=0) on success, -1 on error

get the type of a network message.

Parameters

msg	A char *msg_object you want to have type

Returns: The value corresponding to the type or -1 on error

Definition at line 843 of file n_network_msg.c.

References __n_assert, N_STR::data, LOG_ERR, n_log, and N_STR::written.

Referenced by manage_client().

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◆ ntohd()

double ntohd ( double value )

convert network double to host byte order

Parameters

value The value to eventually swap

Returns: The modified value

Definition at line 74 of file n_network_msg.c.

References double_swap().

Referenced by make_msg_from_str().

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Data Structures

Macros

Functions

Detailed Description

Data Structure Documentation

◆ NETW_MSG

Macro Definition Documentation

◆ NETMSG_BOX

◆ NETMSG_GET_BOX

◆ NETMSG_IDENT_REPLY_NOK

◆ NETMSG_IDENT_REPLY_OK

◆ NETMSG_IDENT_REQUEST

◆ NETMSG_PING_REPLY

◆ NETMSG_PING_REQUEST

◆ NETMSG_POSITION

◆ NETMSG_QUIT

◆ NETMSG_STRING

◆ NETW_MSG_MAX_STRING_LENGTH

Function Documentation

◆ add_int_to_msg()

◆ add_nb_to_msg()

◆ add_nstrdup_to_msg()

◆ add_nstrptr_to_msg()

◆ add_strdup_to_msg()

◆ create_msg()

◆ delete_msg()

◆ double_swap()

◆ empty_msg()

◆ get_int_from_msg()

◆ get_nb_from_msg()

◆ get_nstr_from_msg()

◆ get_str_from_msg()

◆ htond()

◆ make_msg_from_str()

◆ make_str_from_msg()

◆ netmsg_make_ident()

◆ netmsg_make_ping()

◆ netmsg_make_position_msg()

◆ netmsg_make_quit_msg()

◆ netmsg_make_string_msg()

◆ netw_get_ident()

◆ netw_get_ping()

◆ netw_get_position()

◆ netw_get_quit()

◆ netw_get_string()

◆ netw_msg_get_type()

◆ ntohd()