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Wiki / Protocol Messages

AuthenticationSASLFinal

AuthenticationSASLFinal is a backend protocol message. Identifies the message as an authentication request.

Reading PG 18·Select a recorded version

Direction
Backend → frontend
First wire field
Byte1('R')
Field entries
4
Documented flow contexts
Start-up
direction
B
manual path
/docs/18/protocol-message-formats.html
signature
AuthenticationSASLFinal (B)

Definition PG 18

Byte1('R')

Identifies the message as an authentication request.

Int32

Length of message contents in bytes, including self.

Int32(12)

Specifies that SASL authentication has completed.

Byten

SASL outcome "additional data", specific to the SASL mechanism being used.

Wire fields in documented order

PositionFormatMeaning
1Byte1('R')Identifies the message as an authentication request.
2Int32Length of message contents in bytes, including self.
3Int32(12)Specifies that SASL authentication has completed.
4Byte nSASL outcome "additional data", specific to the SASL mechanism being used.

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Complete source facts

fields

map[description:Identifies the message as an authentication request. format:Byte1('R')], map[description:Length of message contents in bytes, including self. format:Int32], map[description:Specifies that SASL authentication has completed. format:Int32(12)], map[description:SASL outcome "additional data", specific to the SASL mechanism being used. format:Byte n]

Source references

Full definition and evidence JSON

Definition sources

center · PostgreSQL 18 · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f

Text language: en · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f