low_level_net.c File Reference

Classes
struct	wire_message
	wire message structure that contains length of the message which is sent before the msg itself More...
Functions
buffer_handle	initialize_buffer ()
	Initializes buffer with the default size.
void	destroy_handle (struct buffer_handle b)
	Frees the buffer.
void	update_buffer_size (struct buffer_handle *bh, int new_size)
	Updates buffer size with the max of given size and current size.
int	get_message_length (int ret, struct wire_message *wm)
	Retrieves length of wire message.
void *	read_wire_message (struct buffer_handle *buff, int fd)
	Reads the msg from socket.
int	write_wire_message (int fd, const void *buf, int nLength)
	Writes the msg to the socket.
Variables
int	current_size = -1
	initial size

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Function Documentation

void destroy_handle

(

struct buffer_handle

b

)

Frees the buffer.

Parameters:

[in]

b

buffer

int get_message_length	(	int	ret,
		struct wire_message *	wm
	)

Retrieves length of wire message.

Parameters:

[in]	ret	return value comes from socket communication
[in]	wm	wire message comes from socket communication

Returns:

message length in success or negative value in failure

struct buffer_handle initialize_buffer

(

)

Initializes buffer with the default size.

Returns:

buffer_handle buffer

void* read_wire_message	(	struct buffer_handle *	buff,
		int	fd
	)

Reads the msg from socket.

Parameters:

[in]	buff	buffer
[in]	fd	socket id

void update_buffer_size	(	struct buffer_handle *	bh,
		int	new_size
	)

Updates buffer size with the max of given size and current size.

Parameters:

[in]	bh	buffer
[in]	new_size	new size of the buffer

int write_wire_message	(	int	fd,
		const void *	buf,
		int	nLength
	)

Writes the msg to the socket.

Parameters:

[in]	fd	socket id
[in]	buf	buffer
[in]	nLength	length of the msg

Returns:

success of write

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Variable Documentation

int current_size = -1

initial size

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