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Another round of protocol changes. Backend-to-frontend messages now all

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have length words.  COPY OUT reimplemented per new protocol: it doesn't
need \. anymore, thank goodness.  COPY BINARY to/from frontend works,
at least as far as the backend is concerned --- libpq's PQgetline API
is not up to snuff, and will have to be replaced with something that is
null-safe.  libpq uses message length words for performance improvement
(no cycles wasted rescanning long messages), but not yet for error
recovery.
This commit is contained in:
Tom Lane
2003-04-22 00:08:07 +00:00
parent ca944bd2d4
commit 5ed27e35f3
22 changed files with 782 additions and 357 deletions
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22
src/backend/postmaster/postmaster.c
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@@ -37,7 +37,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/postmaster/postmaster.c,v 1.313 2003/04/19 00:02:29 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/postmaster/postmaster.c,v 1.314 2003/04/22 00:08:06 tgl Exp $
*
* NOTES
*
@@ -1118,7 +1118,13 @@ ProcessStartupPacket(Port *port, bool SSLdone)
if (pq_getbytes((char *) &len, 4) == EOF)
{
elog(COMMERROR, "incomplete startup packet");
/*
* EOF after SSLdone probably means the client didn't like our
* response to NEGOTIATE_SSL_CODE. That's not an error condition,
* so don't clutter the log with a complaint.
*/
if (!SSLdone)
elog(COMMERROR, "incomplete startup packet");
return STATUS_ERROR;
}
@@ -1127,7 +1133,10 @@ ProcessStartupPacket(Port *port, bool SSLdone)
if (len < (int32) sizeof(ProtocolVersion) ||
len > MAX_STARTUP_PACKET_LENGTH)
elog(FATAL, "invalid length of startup packet");
{
elog(COMMERROR, "invalid length of startup packet");
return STATUS_ERROR;
}
/*
* Allocate at least the size of an old-style startup packet, plus one
@@ -1173,7 +1182,7 @@ ProcessStartupPacket(Port *port, bool SSLdone)
#endif
if (send(port->sock, &SSLok, 1, 0) != 1)
{
elog(LOG, "failed to send SSL negotiation response: %m");
elog(COMMERROR, "failed to send SSL negotiation response: %m");
return STATUS_ERROR; /* close the connection */
}
@@ -1188,6 +1197,11 @@ ProcessStartupPacket(Port *port, bool SSLdone)
/* Could add additional special packet types here */
/*
* Set FrontendProtocol now so that elog() knows what format to send
* if we fail during startup.
*/
FrontendProtocol = proto;
/*
* XXX temporary for 3.0 protocol development: we are using the minor