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| author | Robert Haas <rhaas@postgresql.org> | 2011-03-17 15:10:55 -0400 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2011-03-17 15:10:55 -0400 |
| commit | 76dbb4615389e1f44e48074b87be77262143021e (patch) | |
| tree | 8f5c9d386e252a01c0636eb125882008a1a6ebac | |
| parent | 02b1f84e7d2c8921d3ef291469cfd4b7235358f0 (diff) | |
| download | postgresql-76dbb4615389e1f44e48074b87be77262143021e.tar.gz postgresql-76dbb4615389e1f44e48074b87be77262143021e.zip | |
Protocol documentation for Hot Standby feedback messages.
| -rw-r--r-- | doc/src/sgml/protocol.sgml | 63 |
1 files changed, 60 insertions, 3 deletions
diff --git a/doc/src/sgml/protocol.sgml b/doc/src/sgml/protocol.sgml index c923d3b154c..6be5a149aec 100644 --- a/doc/src/sgml/protocol.sgml +++ b/doc/src/sgml/protocol.sgml @@ -1471,9 +1471,9 @@ The commands accepted in walsender mode are: </para> <para> - The receiving process can send a status update back to the sender at - any time, using the following message format (also in the payload of - a CopyData message): + The receiving process can send replies back to the sender at any time, + using one of the following message formats (also in the payload of a + CopyData message): </para> <para> @@ -1545,6 +1545,63 @@ The commands accepted in walsender mode are: </varlistentry> </variablelist> </para> + + <para> + <variablelist> + <varlistentry> + <term> + Hot Standby feedback message (F) + </term> + <listitem> + <para> + <variablelist> + <varlistentry> + <term> + Byte1('h') + </term> + <listitem> + <para> + Identifies the message as a Hot Standby feedback message. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term> + Byte8 + </term> + <listitem> + <para> + The server's system clock at the time of transmission, + given in TimestampTz format. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term> + Byte4 + </term> + <listitem> + <para> + The standby's current xmin. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term> + Byte4 + </term> + <listitem> + <para> + The standby's current epoch. + </para> + </listitem> + </varlistentry> + </variablelist> + </para> + </listitem> + </varlistentry> + </variablelist> + </para> </listitem> </varlistentry> |