Function http_start_receive_data

ffserver.c:2577–2618

}

static int http_start_receive_data(HTTPContext *c)
{
    int fd;

    if (c->stream->feed_opened)
        return -1;

    /* Don't permit writing to this one */
    if (c->stream->readonly)
        return -1;

    /* open feed */
    fd = open(c->stream->feed_filename, O_RDWR);
    if (fd < 0) {
        http_log("Error opening feeder file: %s\n", strerror(errno));
        return -1;
    }
    c->feed_fd = fd;

    if (c->stream->truncate) {
        /* truncate feed file */
        ffm_write_write_index(c->feed_fd, FFM_PACKET_SIZE);
        ftruncate(c->feed_fd, FFM_PACKET_SIZE);
        http_log("Truncating feed file '%s'\n", c->stream->feed_filename);
    } else {
        if ((c->stream->feed_write_index = ffm_read_write_index(fd)) < 0) {
            http_log("Error reading write index from feed file: %s\n", strerror(errno));
            return -1;
        }
    }

    c->stream->feed_write_index = FFMAX(ffm_read_write_index(fd), FFM_PACKET_SIZE);
    c->stream->feed_size = lseek(fd, 0, SEEK_END);
    lseek(fd, 0, SEEK_SET);

    /* init buffer input */
    c->buffer_ptr = c->buffer;
    c->buffer_end = c->buffer + FFM_PACKET_SIZE;
    c->stream->feed_opened = 1;
    c->chunked_encoding = !!av_stristr(c->buffer, "Transfer-Encoding: chunked");
    return 0;
}

static int http_receive_data(HTTPContext *c)
{