/*Copyright (C) 2006  Adam Charrett This program is free software; you can redistribute it and/ormodify it under the terms of the GNU General Public Licenseas published by the Free Software Foundation; either version 2of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; without even the implied warranty ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See theGNU General Public License for more details. You should have received a copy of the GNU General Public Licensealong with this program; if not, write to the Free SoftwareFoundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA udpsend.c Simplify UDP socket creation and packet sending. */#include <stdlib.h>#include <stdio.h>#include <unistd.h>#include <sys/types.h>#include <sys/socket.h>#include <string.h>#include <netdb.h>#include "logging.h"#include "udp.h"#define PORT "54197" // 0xd3b5 ~= DVBSint UDPCreateSocket(sa_family_t family){    int socketfd = socket(family, SOCK_DGRAM, IPPROTO_UDP);    int reuseAddr = 1;    struct addrinfo *addrinfo, hints;    int ret;    if (socketfd < 0)    {        printlog(LOG_ERROR, "socket() failed\n");        return -1;    }    if (setsockopt(socketfd, SOL_SOCKET, SO_REUSEADDR, &reuseAddr, sizeof(int)))    {        printlog(LOG_ERROR,"setsockopt(SOL_SOCKET, SO_REUSEADDR) failed\n");        close(socketfd);        return -1;    }    memset((void *)&hints, 0, sizeof(hints));    hints.ai_family = family;    hints.ai_socktype = SOCK_DGRAM;    hints.ai_flags = AI_PASSIVE | AI_NUMERICSERV;    ret = getaddrinfo(NULL, PORT, &hints, &addrinfo);    if (ret != 0 || addrinfo == NULL)    {        printlog(LOG_ERROR, "getaddrinfo() failed with error %s\n", gai_strerror(ret));        return -1;    }    if	(bind(socketfd, addrinfo->ai_addr, addrinfo->ai_addrlen)<0)    {        printlog(LOG_ERROR, "bind() failed\n");        close(socketfd);        socketfd = -1;    }    freeaddrinfo(addrinfo);    return socketfd;}