UdpMulticastSocket Class Reference

Allows to retrieve data from a UDP multicast group. More...

#include <socket.h>

Public Member Functions
const char *	getBuffer ()
	Returns a pointer to the internal buffer, holding the received data. More...
int	recv ()
	Retrieve data from multicast group. More...
int	send (const char *buf, unsigned int sz, int port)
	UdpMulticastSocket (const int local_port, const std::string multicast_ip="224.0.0.1")
	Creates a socket and joins the multicast group with the given address. More...
	~UdpMulticastSocket ()

Static Public Attributes
static const int	MAXRECV = 3000
	Maximum number of bytse that can be read at a time. More...

Private Attributes
char	buf [MAXRECV+1]
sockaddr_in	HostAddr
sockaddr_in	m_local_addr
int	m_socket
bool	remote_ip_exist

Detailed Description

Allows to retrieve data from a UDP multicast group.

Definition at line 55 of file socket.h.

Constructor & Destructor Documentation

UdpMulticastSocket()

UdpMulticastSocket::UdpMulticastSocket	(	const int	local_port,
		const std::string	multicast_ip = "224.0.0.1"
	)

Creates a socket and joins the multicast group with the given address.

Definition at line 40 of file socket.cpp.

~UdpMulticastSocket()

UdpMulticastSocket::~UdpMulticastSocket

(

)

Definition at line 146 of file socket.cpp.

Member Function Documentation

getBuffer()

const char* UdpMulticastSocket::getBuffer ( )

inline

Returns a pointer to the internal buffer, holding the received data.

The buffer size may be obtained from MAXRECV.

Definition at line 77 of file socket.h.

recv()

int UdpMulticastSocket::recv

(

)

Retrieve data from multicast group.

Returns

The number of bytes received or -1 if no data is available

This call is non-blocking.

Definition at line 151 of file socket.cpp.

send()

int UdpMulticastSocket::send	(	const char *	buf,
		unsigned int	sz,
		int	port
	)

Definition at line 176 of file socket.cpp.

Member Data Documentation

buf

char UdpMulticastSocket::buf[MAXRECV+1]

private

Definition at line 90 of file socket.h.

HostAddr

sockaddr_in UdpMulticastSocket::HostAddr

private

Definition at line 88 of file socket.h.

m_local_addr

sockaddr_in UdpMulticastSocket::m_local_addr

private

Definition at line 87 of file socket.h.

m_socket

int UdpMulticastSocket::m_socket

private

Definition at line 86 of file socket.h.

MAXRECV

const int UdpMulticastSocket::MAXRECV = 3000

static

Maximum number of bytse that can be read at a time.

Definition at line 60 of file socket.h.

remote_ip_exist

bool UdpMulticastSocket::remote_ip_exist

private

Definition at line 89 of file socket.h.

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

• socket.h
• socket.cpp