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Fix EOF packet calculation for large rows

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The EOF packet calculation function in modutil.cc didn't handle the case
where the payload exceeded maximum packet size and could mistake binary
data for a ERR packet.

The state of a multi-packet payload is now exposed by the
modutil_count_signal_packets function. This allows proper handling of
large multi-packet payloads.

Added minor improvements to mxs1110_16mb to handle testing of this change.
This commit is contained in:
Markus Mäkelä
2017-08-25 14:23:14 +03:00
parent 5832352a08
commit 13f7015e7b
7 changed files with 58 additions and 12 deletions
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4
server/modules/routing/readwritesplit/readwritesplit.cc
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@ -523,8 +523,10 @@ bool reply_is_complete(SRWBackend backend, GWBUF *buffer)
else
{
bool more = false;
bool skip = backend->get_skip_packet();
int old_eof = backend->get_reply_state() == REPLY_STATE_RSET_ROWS ? 1 : 0;
int n_eof = modutil_count_signal_packets(buffer, old_eof, &more);
int n_eof = modutil_count_signal_packets(buffer, old_eof, &more, &skip);
backend->set_skip_packet(skip);
if (n_eof == 0)
{