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Heikki Linnakangas 3174d69fb9 Remove server and libpq support for old FE/BE protocol version 2. 
Protocol version 3 was introduced in PostgreSQL 7.4. There shouldn't be
many clients or servers left out there without version 3 support. But as
a courtesy, I kept just enough of the old protocol support that we can
still send the "unsupported protocol version" error in v2 format, so that
old clients can display the message properly. Likewise, libpq still
understands v2 ErrorResponse messages when establishing a connection.

The impetus to do this now is that I'm working on a patch to COPY
FROM, to always prefetch some data. We cannot do that safely with the
old protocol, because it requires parsing the input one byte at a time
to detect the end-of-copy marker.

Reviewed-by: Tom Lane, Alvaro Herrera, John Naylor
Discussion: https://www.postgresql.org/message-id/9ec25819-0a8a-d51a-17dc-4150bb3cca3b%40iki.fi
2021-03-04 10:45:55 +02:00
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.gitignore Revert "Add gitignore entries for jsonpath_gram.h" 2019-03-23 00:19:34 +01:00
acl.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
aclchk_internal.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
array.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
arrayaccess.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
ascii.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
attoptcache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
builtins.h Rework refactoring of hex and encoding routines 2021-01-14 11:13:24 +09:00
bytea.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
cash.h Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00
catcache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
combocid.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
date.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
datetime.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
datum.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
dsa.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
dynahash.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
elog.h Remove server and libpq support for old FE/BE protocol version 2. 2021-03-04 10:45:55 +02:00
evtcache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
expandeddatum.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
expandedrecord.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
float.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
fmgrtab.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
formatting.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
freepage.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
geo_decls.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
guc.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
guc_tables.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
help_config.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
hsearch.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
index_selfuncs.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
inet.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
int8.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
inval.h Replace CLOBBER_CACHE_ALWAYS with run-time GUC 2021-01-06 10:46:44 +01:00
json.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
jsonb.h Implementation of subscripting for jsonb 2021-01-31 23:50:40 +03:00
jsonfuncs.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
jsonpath.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
logtape.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
lsyscache.h Preserve pg_attribute.attstattarget across REINDEX CONCURRENTLY 2021-02-10 13:06:48 +09:00
memdebug.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
memutils.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
multirangetypes.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
numeric.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
old_snapshot.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
palloc.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
partcache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_crc.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_locale.h Hide internal error for pg_collation_actual_version(<bad OID>). 2021-02-22 23:01:20 +13:00
pg_lsn.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_rusage.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pidfile.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
plancache.h Improve performance of repeated CALLs within plpgsql procedures. 2021-01-25 22:28:29 -05:00
portal.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
ps_status.h Refactor ps_status.c API 2020-03-11 16:38:31 +01:00
queryenvironment.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
rangetypes.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
regproc.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
rel.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
relcache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
relfilenodemap.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
relmapper.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
relptr.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
reltrigger.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
resowner.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
resowner_private.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
rls.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
ruleutils.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
sampling.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
selfuncs.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
sharedtuplestore.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
snapmgr.h Rename removable xid function for consistency. 2021-02-07 10:11:14 -08:00
snapshot.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
sortsupport.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
spccache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
syscache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
timeout.h Add idle_session_timeout. 2021-01-06 18:28:52 -05:00
timestamp.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
tuplesort.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
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typcache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
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uuid.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
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xid8.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
xml.h Update copyright for 2021 2021-01-02 13:06:25 -05:00