sock_set_dest.c

SocketApi是在netembryo库上修改而成的

/* *
 *
 *
 *  This file is part of NetEmbryo
 *
 *  NetEmbryo -- default network wrapper
 *
 *  Copyright (C) 2006 by
 *
 *      - Dario Gallucci	<[e-mail]>
 *
 *  NetEmbryo is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  NetEmbryo is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with NetEmbryo; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * */

#include <wsocket.h>

int Sock_set_dest(Sock *s, struct sockaddr *sa) {

	if (!s)
		return -1;

	if (s->socktype != UDP) {
		net_log(NET_LOG_FATAL, "Only UDP socket can change destination address\n");
		return -1;
	}

	switch (sa->sa_family) {
	case AF_INET:
		memcpy(&(s->remote_stg), sa, sizeof(struct sockaddr_in));
		break;
	case AF_INET6:
		memcpy(&(s->remote_stg), sa, sizeof(struct sockaddr_in6));
		break;
	default:
		break;
	}
	return 0;
}