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Drop server support for FE/BE protocol version 1.0.

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While this isn't a lot of code, it's been essentially untestable for
a very long time, because libpq doesn't support anything older than
protocol 2.0, and has not since release 6.3.  There's no reason to
believe any other client-side code still uses that protocol, either.

Discussion: <2661.1475849167@sss.pgh.pa.us>
This commit is contained in:
Tom Lane
2016-10-11 12:19:18 -04:00
parent 2b860f52ed
commit 2f1eaf87e8
5 changed files with 8 additions and 35 deletions
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28
src/backend/commands/copy.c
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@ -353,7 +353,7 @@ SendCopyBegin(CopyState cstate)
pq_endmessage(&buf);
cstate->copy_dest = COPY_NEW_FE;
}
else if (PG_PROTOCOL_MAJOR(FrontendProtocol) >= 2)
else
{
/* old way */
if (cstate->binary)
@ -365,18 +365,6 @@ SendCopyBegin(CopyState cstate)
pq_startcopyout();
cstate->copy_dest = COPY_OLD_FE;
}
else
{
/* very old way */
if (cstate->binary)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("COPY BINARY is not supported to stdout or from stdin")));
pq_putemptymessage('B');
/* grottiness needed for old COPY OUT protocol */
pq_startcopyout();
cstate->copy_dest = COPY_OLD_FE;
}
}
static void
@ -399,7 +387,7 @@ ReceiveCopyBegin(CopyState cstate)
cstate->copy_dest = COPY_NEW_FE;
cstate->fe_msgbuf = makeStringInfo();
}
else if (PG_PROTOCOL_MAJOR(FrontendProtocol) >= 2)
else
{
/* old way */
if (cstate->binary)
@ -411,18 +399,6 @@ ReceiveCopyBegin(CopyState cstate)
pq_startmsgread();
cstate->copy_dest = COPY_OLD_FE;
}
else
{
/* very old way */
if (cstate->binary)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("COPY BINARY is not supported to stdout or from stdin")));
pq_putemptymessage('D');
/* any error in old protocol will make us lose sync */
pq_startmsgread();
cstate->copy_dest = COPY_OLD_FE;
}
/* We *must* flush here to ensure FE knows it can send. */
pq_flush();
}