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/*
msock.h - multicast socket creation routines
(C) 2016 Christian Beier <dontmind@sdf.org>
*/
#ifndef MSOCK_H
#define MSOCK_H
/* this is for windows compat */
#define SOCKET int
#ifdef __MINGW32__
#undef SOCKET
#undef socklen_t
#define WINVER 0x0501
#include <ws2tcpip.h>
#define EWOULDBLOCK WSAEWOULDBLOCK
#define close closesocket
#define socklen_t int
typedef unsigned int in_addr_t;
#else
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/un.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <netdb.h>
#endif
/* Define IPV6_ADD_MEMBERSHIP for FreeBSD and Mac OS X */
#ifndef IPV6_ADD_MEMBERSHIP
#define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
#endif
/**
Creates a socket suitable for sending multicast datagrams via sendto().
On success, a socket is returned and multicastAddr set with the right info for sendto() calls.
On error, -1 is returned.
*/
SOCKET mcast_send_socket(char* multicastIP, char* multicastPort, int multicastTTL, struct addrinfo **multicastAddr);
/**
Creates a socket suitable for receiving multicast datagrams via recvfrom(). Also sets socket recv buffer.
On success, returns socket.
On fail, returns -1.
*/
SOCKET mcast_recv_socket(char* multicastIP, char* multicastPort, int multicastRecvBufSize);
/**
Creates a TCP socket that connects to serverIP:serverPort.
Meant to give feedback to a mcast sender.
On success, returns socket.
On error, -1 is returned.
*/
SOCKET ucast_client_socket(char* serverIP, char* serverPort);
/**
Creates a TCP socket that binds locally serverPort.
Meant to receive feedback to a mcast sender.
On success, returns socket.
On error, -1 is returned.
*/
SOCKET ucast_server_socket(char* serverPort, int maxPendingConnections);
#endif
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