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Avoid to duplicate the multicast code between the IPv4-only and
protocol-independent versions Originally committed as revision 11012 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Luca Abeni
parent
0ec1233511
commit
a8bde059e6
@ -45,28 +45,31 @@ typedef struct {
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#define UDP_TX_BUF_SIZE 32768
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#define UDP_MAX_PKT_SIZE 65536
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#ifdef CONFIG_IPV6
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static int udp_ipv6_set_multicast_ttl(int sockfd, int mcastTTL, struct sockaddr *addr) {
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#ifdef IP_MULTICAST_TTL
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if (addr->sa_family == AF_INET) {
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if (setsockopt(sockfd, IPPROTO_IP, IP_MULTICAST_TTL, &mcastTTL, sizeof(mcastTTL)) < 0) {
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perror("setsockopt(IP_MULTICAST_TTL)");
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return -1;
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}
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}
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#endif
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#ifdef CONFIG_IPV6
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if (addr->sa_family == AF_INET6) {
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if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &mcastTTL, sizeof(mcastTTL)) < 0) {
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perror("setsockopt(IPV6_MULTICAST_HOPS)");
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return -1;
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}
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}
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#endif
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return 0;
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}
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static int udp_ipv6_join_multicast_group(int sockfd, struct sockaddr *addr) {
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struct ip_mreq mreq;
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struct ipv6_mreq mreq6;
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#ifdef IP_ADD_MEMBERSHIP
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if (addr->sa_family == AF_INET) {
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struct ip_mreq mreq;
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mreq.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr;
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mreq.imr_interface.s_addr= INADDR_ANY;
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if (setsockopt(sockfd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (const void *)&mreq, sizeof(mreq)) < 0) {
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@ -74,7 +77,11 @@ static int udp_ipv6_join_multicast_group(int sockfd, struct sockaddr *addr) {
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return -1;
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}
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}
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#endif
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#ifdef CONFIG_IPV6
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if (addr->sa_family == AF_INET6) {
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struct ipv6_mreq mreq6;
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memcpy(&mreq6.ipv6mr_multiaddr, &(((struct sockaddr_in6 *)addr)->sin6_addr), sizeof(struct in6_addr));
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mreq6.ipv6mr_interface= 0;
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if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
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@ -82,13 +89,15 @@ static int udp_ipv6_join_multicast_group(int sockfd, struct sockaddr *addr) {
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return -1;
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}
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}
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#endif
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return 0;
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}
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static int udp_ipv6_leave_multicast_group(int sockfd, struct sockaddr *addr) {
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struct ip_mreq mreq;
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struct ipv6_mreq mreq6;
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#ifdef IP_DROP_MEMBERSHIP
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if (addr->sa_family == AF_INET) {
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struct ip_mreq mreq;
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mreq.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr;
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mreq.imr_interface.s_addr= INADDR_ANY;
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if (setsockopt(sockfd, IPPROTO_IP, IP_DROP_MEMBERSHIP, (const void *)&mreq, sizeof(mreq)) < 0) {
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@ -96,7 +105,11 @@ static int udp_ipv6_leave_multicast_group(int sockfd, struct sockaddr *addr) {
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return -1;
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}
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}
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#endif
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#ifdef CONFIG_IPV6
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if (addr->sa_family == AF_INET6) {
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struct ipv6_mreq mreq6;
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memcpy(&mreq6.ipv6mr_multiaddr, &(((struct sockaddr_in6 *)addr)->sin6_addr), sizeof(struct in6_addr));
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mreq6.ipv6mr_interface= 0;
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if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_DROP_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
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@ -104,9 +117,11 @@ static int udp_ipv6_leave_multicast_group(int sockfd, struct sockaddr *addr) {
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return -1;
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}
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}
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#endif
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return 0;
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}
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#ifdef CONFIG_IPV6
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static struct addrinfo* udp_ipv6_resolve_host(const char *hostname, int port, int type, int family, int flags) {
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struct addrinfo hints, *res = 0;
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int error;
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@ -345,45 +360,24 @@ static int udp_open(URLContext *h, const char *uri, int flags)
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len = sizeof(my_addr1);
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getsockname(udp_fd, (struct sockaddr *)&my_addr1, &len);
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s->local_port = ntohs(my_addr1.sin_port);
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#ifdef IP_MULTICAST_TTL
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if (s->is_multicast) {
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if (h->flags & URL_WRONLY) {
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/* output */
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if (setsockopt(udp_fd, IPPROTO_IP, IP_MULTICAST_TTL,
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&s->ttl, sizeof(s->ttl)) < 0) {
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perror("IP_MULTICAST_TTL");
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goto fail;
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}
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} else {
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/* input */
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memset(&s->mreq, 0, sizeof(s->mreq));
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s->mreq.imr_multiaddr = s->dest_addr.sin_addr;
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s->mreq.imr_interface.s_addr = htonl (INADDR_ANY);
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if (setsockopt(udp_fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
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&s->mreq, sizeof(s->mreq)) < 0) {
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perror("rtp: IP_ADD_MEMBERSHIP");
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goto fail;
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}
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}
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}
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#endif
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#else
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if (s->is_multicast && !(h->flags & URL_WRONLY))
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s->local_port = port;
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udp_fd = udp_ipv6_set_local(h);
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if (udp_fd < 0)
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goto fail;
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#endif /* CONFIG_IPV6 */
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if (s->is_multicast) {
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if (h->flags & URL_WRONLY) {
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/* output */
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if (udp_ipv6_set_multicast_ttl(udp_fd, s->ttl, (struct sockaddr *)&s->dest_addr) < 0)
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goto fail;
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} else {
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/* input */
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if (udp_ipv6_join_multicast_group(udp_fd, (struct sockaddr *)&s->dest_addr) < 0)
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goto fail;
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}
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}
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#endif /* CONFIG_IPV6 */
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if (is_output) {
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/* limit the tx buf size to limit latency */
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@ -458,19 +452,8 @@ static int udp_close(URLContext *h)
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{
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UDPContext *s = h->priv_data;
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#ifndef CONFIG_IPV6
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#ifdef IP_DROP_MEMBERSHIP
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if (s->is_multicast && !(h->flags & URL_WRONLY)) {
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if (setsockopt(s->udp_fd, IPPROTO_IP, IP_DROP_MEMBERSHIP,
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&s->mreq, sizeof(s->mreq)) < 0) {
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perror("IP_DROP_MEMBERSHIP");
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}
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}
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#endif
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#else
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if (s->is_multicast && !(h->flags & URL_WRONLY))
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udp_ipv6_leave_multicast_group(s->udp_fd, (struct sockaddr *)&s->dest_addr);
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#endif
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closesocket(s->udp_fd);
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ff_network_close();
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av_free(s);
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