Exemple #1
0
static int udp_socket_create(UDPContext *s, struct sockaddr_storage *addr, int *addr_len)
{
    int udp_fd = -1;
    struct addrinfo *res0 = NULL, *res = NULL;
    int family = AF_UNSPEC;

    if (((struct sockaddr *) &s->dest_addr)->sa_family)
        family = ((struct sockaddr *) &s->dest_addr)->sa_family;
    res0 = udp_ipv6_resolve_host(0, s->local_port, SOCK_DGRAM, family, AI_PASSIVE);
    if (res0 == 0)
        goto fail;
    for (res = res0; res; res=res->ai_next) {
        udp_fd = socket(res->ai_family, SOCK_DGRAM, 0);
        if (udp_fd > 0) break;
        av_log(NULL, AV_LOG_ERROR, "socket: %s\n", strerror(errno));
    }

    if (udp_fd < 0)
        goto fail;

    memcpy(addr, res->ai_addr, res->ai_addrlen);
    *addr_len = res->ai_addrlen;

    freeaddrinfo(res0);

    return udp_fd;

 fail:
    if (udp_fd >= 0)
        closesocket(udp_fd);
    if(res0)
        freeaddrinfo(res0);
    return -1;
}
Exemple #2
0
static int udp_ipv6_set_local(URLContext *h) {
    UDPContext *s = h->priv_data;
    int udp_fd = -1;
    struct sockaddr_storage clientaddr;
    socklen_t addrlen;
    char sbuf[NI_MAXSERV];
    char hbuf[NI_MAXHOST];
    struct addrinfo *res0 = NULL, *res = NULL;

    if (s->local_port != 0) {
        res0 = udp_ipv6_resolve_host(0, s->local_port, SOCK_DGRAM, AF_UNSPEC, AI_PASSIVE);
        if (res0 == 0)
            goto fail;
        for (res = res0; res; res=res->ai_next) {
            udp_fd = socket(res->ai_family, SOCK_DGRAM, 0);
            if (udp_fd > 0) break;
            perror("socket");
        }
    } else {
        udp_fd = socket(s->dest_addr.ss_family, SOCK_DGRAM, 0);
        if (udp_fd < 0)
            perror("socket");
    }

    if (udp_fd < 0)
        goto fail;

    if (s->local_port != 0) {
        if (bind(udp_fd, res0->ai_addr, res0->ai_addrlen) < 0) {
            perror("bind");
            goto fail;
        }
        freeaddrinfo(res0);
        res0 = NULL;
    }

    addrlen = sizeof(clientaddr);
    if (getsockname(udp_fd, (struct sockaddr *)&clientaddr, &addrlen) < 0) {
        perror("getsockname");
        goto fail;
    }

    if (getnameinfo((struct sockaddr *)&clientaddr, addrlen, hbuf, sizeof(hbuf),  sbuf, sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV) != 0) {
        perror("getnameinfo");
        goto fail;
    }

    s->local_port = strtol(sbuf, NULL, 10);

    return udp_fd;

 fail:
    if (udp_fd >= 0)
        closesocket(udp_fd);
    if(res0)
        freeaddrinfo(res0);
    return -1;
}
Exemple #3
0
static int udp_set_url(struct sockaddr_storage *addr, const char *hostname, int port) {
    struct addrinfo *res0;
    int addr_len;

    res0 = udp_ipv6_resolve_host(hostname, port, SOCK_DGRAM, AF_UNSPEC, 0);
    if (res0 == 0) return AVERROR(EIO);
    memcpy(addr, res0->ai_addr, res0->ai_addrlen);
    addr_len = res0->ai_addrlen;
    freeaddrinfo(res0);

    return addr_len;
}
Exemple #4
0
int udp_ipv6_set_remote_url(URLContext *h, const char *uri) {
    UDPContext *s = h->priv_data;
    char hostname[256];
    int port;
    struct addrinfo *res0;
    url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
    res0 = udp_ipv6_resolve_host(hostname, port, SOCK_DGRAM, AF_UNSPEC, 0);
    if (res0 == 0) return AVERROR_IO;
    memcpy(&s->dest_addr, res0->ai_addr, res0->ai_addrlen);
    s->dest_addr_len = res0->ai_addrlen;
    freeaddrinfo(res0);
    return 0;
}