/**
* Streams data out of the from IOBuf and into the to IOBuf
* until it's moved total bytes between them.
*/
int IOBuf_stream(IOBuf *from, IOBuf *to, int total)
{
int need = 0;
int remain = total;
int avail = 0;
int rc = 0;
char *data = NULL;
if(from->len > to->len) IOBuf_resize(to, from->len);
while(remain > 0) {
need = remain <= from->len ? remain : from->len;
data = IOBuf_read(from, need, &avail);
check_debug(avail > 0, "Nothing in read buffer.");
rc = IOBuf_send_all(to, IOBuf_start(from), avail);
check_debug(rc == avail, "Failed to send all of the data: %d of %d", rc, avail)
// commit whatever we just did
check(IOBuf_read_commit(from, rc) != -1, "Final commit failed during streaming.");
// reduce it by the given amount
remain -= rc;
}
assert(remain == 0 && "Buffer math is wrong.");
return total - remain;
error:
return -1;
}
int Connection_deliver_raw_internal(Connection *conn, bstring buf)
{
return IOBuf_send_all(conn->iob, bdata(buf), blength(buf));
}
