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Avoid to duplicate the multicast code between the IPv4-only and

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protocol-independent versions

Originally committed as revision 11012 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Luca Abeni 2007-11-14 07:42:46 +00:00
parent 0ec1233511
commit a8bde059e6
1 changed files with 24 additions and 41 deletions
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65
libavformat/udp.c
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@ -45,28 +45,31 @@ typedef struct {
#define UDP_TX_BUF_SIZE 32768
#define UDP_MAX_PKT_SIZE 65536
#ifdef CONFIG_IPV6
static int udp_ipv6_set_multicast_ttl(int sockfd, int mcastTTL, struct sockaddr *addr) {
#ifdef IP_MULTICAST_TTL
if (addr->sa_family == AF_INET) {
if (setsockopt(sockfd, IPPROTO_IP, IP_MULTICAST_TTL, &mcastTTL, sizeof(mcastTTL)) < 0) {
perror("setsockopt(IP_MULTICAST_TTL)");
return -1;
}
}
#endif
#ifdef CONFIG_IPV6
if (addr->sa_family == AF_INET6) {
if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &mcastTTL, sizeof(mcastTTL)) < 0) {
perror("setsockopt(IPV6_MULTICAST_HOPS)");
return -1;
}
}
#endif
return 0;
}
static int udp_ipv6_join_multicast_group(int sockfd, struct sockaddr *addr) {
struct ip_mreq mreq;
struct ipv6_mreq mreq6;
#ifdef IP_ADD_MEMBERSHIP
if (addr->sa_family == AF_INET) {
struct ip_mreq mreq;
mreq.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr;
mreq.imr_interface.s_addr= INADDR_ANY;
if (setsockopt(sockfd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (const void *)&mreq, sizeof(mreq)) < 0) {
@ -74,7 +77,11 @@ static int udp_ipv6_join_multicast_group(int sockfd, struct sockaddr *addr) {
return -1;
}
}
#endif
#ifdef CONFIG_IPV6
if (addr->sa_family == AF_INET6) {
struct ipv6_mreq mreq6;
memcpy(&mreq6.ipv6mr_multiaddr, &(((struct sockaddr_in6 *)addr)->sin6_addr), sizeof(struct in6_addr));
mreq6.ipv6mr_interface= 0;
if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
@ -82,13 +89,15 @@ static int udp_ipv6_join_multicast_group(int sockfd, struct sockaddr *addr) {
return -1;
}
}
#endif
return 0;
}
static int udp_ipv6_leave_multicast_group(int sockfd, struct sockaddr *addr) {
struct ip_mreq mreq;
struct ipv6_mreq mreq6;
#ifdef IP_DROP_MEMBERSHIP
if (addr->sa_family == AF_INET) {
struct ip_mreq mreq;
mreq.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr;
mreq.imr_interface.s_addr= INADDR_ANY;
if (setsockopt(sockfd, IPPROTO_IP, IP_DROP_MEMBERSHIP, (const void *)&mreq, sizeof(mreq)) < 0) {
@ -96,7 +105,11 @@ static int udp_ipv6_leave_multicast_group(int sockfd, struct sockaddr *addr) {
return -1;
}
}
#endif
#ifdef CONFIG_IPV6
if (addr->sa_family == AF_INET6) {
struct ipv6_mreq mreq6;
memcpy(&mreq6.ipv6mr_multiaddr, &(((struct sockaddr_in6 *)addr)->sin6_addr), sizeof(struct in6_addr));
mreq6.ipv6mr_interface= 0;
if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_DROP_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
@ -104,9 +117,11 @@ static int udp_ipv6_leave_multicast_group(int sockfd, struct sockaddr *addr) {
return -1;
}
}
#endif
return 0;
}
#ifdef CONFIG_IPV6
static struct addrinfo* udp_ipv6_resolve_host(const char *hostname, int port, int type, int family, int flags) {
struct addrinfo hints, *res = 0;
int error;
@ -345,45 +360,24 @@ static int udp_open(URLContext *h, const char *uri, int flags)
len = sizeof(my_addr1);
getsockname(udp_fd, (struct sockaddr *)&my_addr1, &len);
s->local_port = ntohs(my_addr1.sin_port);
#ifdef IP_MULTICAST_TTL
if (s->is_multicast) {
if (h->flags & URL_WRONLY) {
/* output */
if (setsockopt(udp_fd, IPPROTO_IP, IP_MULTICAST_TTL,
&s->ttl, sizeof(s->ttl)) < 0) {
perror("IP_MULTICAST_TTL");
goto fail;
}
} else {
/* input */
memset(&s->mreq, 0, sizeof(s->mreq));
s->mreq.imr_multiaddr = s->dest_addr.sin_addr;
s->mreq.imr_interface.s_addr = htonl (INADDR_ANY);
if (setsockopt(udp_fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
&s->mreq, sizeof(s->mreq)) < 0) {
perror("rtp: IP_ADD_MEMBERSHIP");
goto fail;
}
}
}
#endif
#else
if (s->is_multicast && !(h->flags & URL_WRONLY))
s->local_port = port;
udp_fd = udp_ipv6_set_local(h);
if (udp_fd < 0)
goto fail;
#endif /* CONFIG_IPV6 */
if (s->is_multicast) {
if (h->flags & URL_WRONLY) {
/* output */
if (udp_ipv6_set_multicast_ttl(udp_fd, s->ttl, (struct sockaddr *)&s->dest_addr) < 0)
goto fail;
} else {
/* input */
if (udp_ipv6_join_multicast_group(udp_fd, (struct sockaddr *)&s->dest_addr) < 0)
goto fail;
}
}
#endif /* CONFIG_IPV6 */
if (is_output) {
/* limit the tx buf size to limit latency */
@ -458,19 +452,8 @@ static int udp_close(URLContext *h)
{
UDPContext *s = h->priv_data;
#ifndef CONFIG_IPV6
#ifdef IP_DROP_MEMBERSHIP
if (s->is_multicast && !(h->flags & URL_WRONLY)) {
if (setsockopt(s->udp_fd, IPPROTO_IP, IP_DROP_MEMBERSHIP,
&s->mreq, sizeof(s->mreq)) < 0) {
perror("IP_DROP_MEMBERSHIP");
}
}
#endif
#else
if (s->is_multicast && !(h->flags & URL_WRONLY))
udp_ipv6_leave_multicast_group(s->udp_fd, (struct sockaddr *)&s->dest_addr);
#endif
closesocket(s->udp_fd);
ff_network_close();
av_free(s);