Mark Dilger <mark.dil...@enterprisedb.com> writes:
>> On Jun 9, 2021, at 7:52 AM, Tom Lane <t...@sss.pgh.pa.us> wrote:
>> Somewhat unrelated, but ... am I reading the code correctly that
>> apply_handle_stream_start and related routines are using Asserts
>> to check that the remote sent stream-control messages in the correct
>> order?  That seems many degrees short of acceptable.

> Even if you weren't reading that correctly, this bit:

>     xid = pq_getmsgint(s, 4);

>     Assert(TransactionIdIsValid(xid));

> simply asserts that the sending server didn't send an invalid subtransaction 
> id.

Ugh, yeah.  We should never be using Asserts to validate incoming
messages -- a test-and-elog is more appropriate.

                        regards, tom lane


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