UDP

UDP (User Datagram Protocol) More...

Classes
class	UDPDatagramListener
	UDP datagram listener. More...
class	UDP
	UDP. More...
struct	UDP::Header_t

Functions
virtual void	UDPDatagramListener::handleDatagram (IPv6Interface &input, const IPv6Address *src_addr, const IPv6Address *dst_addr, uint16_t src_port, uint16_t dst_port, const uint8_t *msg, uint16_t len)=0
	수신된 UDP datagram을 처리합니다.
error_t	UDP::sendto (IPv6Interface *output, const IPv6Address *src_addr, uint16_t src_port, const IPv6Address *dst_addr, uint16_t dst_port, const void *user_data, uint16_t len)
error_t	UDP::listen (uint16_t port, void(*func)(IPv6Interface &input, const IPv6Address *src_addr, const IPv6Address *dst_addr, uint16_t src_port, uint16_t dst_port, const uint8_t *msg, uint16_t len))
error_t	UDP::listen (uint16_t port, UDPDatagramListener *listener)
	UDP 포트를 열고, 수신되는 UDP datagram들을 객체로 전달합니다. More...
error_t	UDP::stopListening (uint16_t port)
	UDP 포트를 닫습니다. More...
uint16_t	UDP::getUnusedRandomPort ()
	Get a random port number that is not listening.
static void	UDP::receive (IPv6Interface &input, IPv6PacketBuffer *head, IPv6PacketBuffer *ippkt, IPv6PacketBuffer *udppkt)

Variables
uint16_t	UDP::Header_t::src_port
uint16_t	UDP::Header_t::dst_port
uint16_t	UDP::Header_t::length
uint16_t	UDP::Header_t::checksum
UDP	Udp

Detailed Description

UDP (User Datagram Protocol)

Function Documentation

listen() [1/2]

error_t UDP::listen	(	uint16_t	port,
		UDPDatagramListener *	listener
	)

UDP 포트를 열고, 수신되는 UDP datagram들을 객체로 전달합니다.

Parameters

[in]	port	Port number
[in]	listener	UDP datagram을 처리 가능한 객체의 포인터.

listen() [2/2]

error_t UDP::listen	(	uint16_t	port,
		void(*)(IPv6Interface &input, const IPv6Address *src_addr, const IPv6Address *dst_addr, uint16_t src_port, uint16_t dst_port, const uint8_t *msg, uint16_t len)	func
	)

Open an UDP port to listen incoming UDP datagrams.

Parameters

[in]	port	Port number
[in]	func	Callback function to be called on receipt of UDP datagrams

Returns

• ERROR_SUCCESS: Opening the UDP port is successful.
• ERROR_BUSY: There is already opened port with number of port. Or opening the port is denied by the system due to out of resource.
• ERROR_NOT_ENOUGH_MEMORY: Opening the port is failed due to out of memory.
• ERROR_INVALID_ARGS: func is NULL.

sendto()

error_t UDP::sendto	(	IPv6Interface *	output,
		const IPv6Address *	src_addr,
		uint16_t	src_port,
		const IPv6Address *	dst_addr,
		uint16_t	dst_port,
		const void *	user_data,
		uint16_t	len
	)

Send a user datagram.

Parameters

[in]	out_inf	Output interface ID (only for link-local send)
[in]	src_addr	Source IPv6 address. If it is NULL, most preferred address is selected.
[in]	src_port	Source port address.
[in]	dst_addr	Destination IPv6 address.
[in]	dst_port	Destination port address.
[in]	buf	The User datagram to be sent.
[in]	len	The Length of buf.

Returns

An error code.

stopListening()

error_t UDP::stopListening

(

uint16_t

port

)

UDP 포트를 닫습니다.

Parameters

[in]

port

Port number

Returns

• ERROR_SUCCESS: 성공
• ERROR_FAIL: port 가 현재 수신 대기 중이 아니므로 실패