/* This function writes the data that are left in the
* Handshake write buffer (ie. because the previous write was
* interrupted.
*
*/
ssize_t
_gnutls_handshake_io_write_flush (gnutls_session_t session)
{
mbuffer_head_st *const send_buffer =
&session->internals.handshake_send_buffer;
gnutls_datum_t msg;
int ret;
uint16_t epoch;
ssize_t total = 0;
mbuffer_st *cur;
_gnutls_write_log ("HWRITE FLUSH: %d bytes in buffer.\n",
(int) send_buffer->byte_length);
if (IS_DTLS(session))
return _dtls_transmit(session);
for (cur = _mbuffer_head_get_first (send_buffer, &msg);
cur != NULL; cur = _mbuffer_head_get_first (send_buffer, &msg))
{
epoch = cur->epoch;
ret = _gnutls_send_int (session, cur->type,
cur->htype,
epoch,
msg.data, msg.size, 0);
if (ret >= 0)
{
total += ret;
ret = _mbuffer_head_remove_bytes (send_buffer, ret);
if (ret == 1)
_gnutls_epoch_refcount_dec(session, epoch);
_gnutls_write_log ("HWRITE: wrote %d bytes, %d bytes left.\n",
ret, (int) send_buffer->byte_length);
}
else
{
_gnutls_write_log ("HWRITE error: code %d, %d bytes left.\n",
ret, (int) send_buffer->byte_length);
gnutls_assert ();
return ret;
}
}
return _gnutls_io_write_flush (session);
}
static int drop_usage_count(gnutls_session_t session, mbuffer_head_st *const send_buffer)
{
int ret;
mbuffer_st *cur;
for (cur = send_buffer->head;
cur != NULL; cur = cur->next)
{
ret = _gnutls_epoch_refcount_dec(session, cur->epoch);
if (ret < 0)
return gnutls_assert_val(ret);
}
return 0;
}