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doc: add reference to wire protocol details 

Discussion: https://postgr.es/m/143A51B2-80B1-4ECD-AF67-F7061377FF63@hotmail.com

Author: Li Japin

Backpatch-through: master
This commit is contained in:
Bruce Momjian 2023-11-01 13:57:04 -04:00
parent 0f852cccd9
commit 783e816666
1 changed files with 4 additions and 2 deletions
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6
doc/src/sgml/protocol.sgml
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@ -2222,8 +2222,10 @@ psql "dbname=postgres replication=database" -c "IDENTIFY_SYSTEM;"
</para>
<para>
WAL data is sent as a series of CopyData messages. (This allows
other information to be intermixed; in particular the server can send
WAL data is sent as a series of CopyData messages;
see <xref linkend="protocol-message-types"/> and <xref
linkend="protocol-message-formats"/> for details.
(This allows other information to be intermixed; in particular the server can send
an ErrorResponse message if it encounters a failure after beginning
to stream.) The payload of each CopyData message from server to the
client contains a message of one of the following formats: