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Wiki / Protocol Messages

SASLInitialResponse

SASLInitialResponse is a frontend protocol message. Identifies the message as an initial SASL response. Note that this is also used for GSSAPI, SSPI and password response messages. The exact message type is deduced from the context.

Reading PG 18·Select a recorded version

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Direction
Frontend → backend
First wire field
Byte1('p')
Field entries
5
Documented flow contexts
Start-up
direction
F
manual path
/docs/18/protocol-message-formats.html
signature
SASLInitialResponse (F)

Definition PG 18

Byte1('p')

Identifies the message as an initial SASL response. Note that this is also used for GSSAPI, SSPI and password response messages. The exact message type is deduced from the context.

Int32

Length of message contents in bytes, including self.

String

Name of the SASL authentication mechanism that the client selected.

Int32

Length of SASL mechanism specific "Initial Client Response" that follows, or -1 if there is no Initial Response.

Byten

SASL mechanism specific "Initial Response".

Wire fields in documented order

PositionFormatMeaning
1Byte1('p')Identifies the message as an initial SASL response. Note that this is also used for GSSAPI, SSPI and password response messages. The exact message type is deduced from the context.
2Int32Length of message contents in bytes, including self.
3StringName of the SASL authentication mechanism that the client selected.
4Int32Length of SASL mechanism specific "Initial Client Response" that follows, or -1 if there is no Initial Response.
5Byte nSASL mechanism specific "Initial Response".

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Complete source facts

fields

map[description:Identifies the message as an initial SASL response. Note that this is also used for GSSAPI, SSPI and password response messages. The exact message type is deduced from the context. format:Byte1('p')], map[description:Length of message contents in bytes, including self. format:Int32], map[description:Name of the SASL authentication mechanism that the client selected. format:String], map[description:Length of SASL mechanism specific "Initial Client Response" that follows, or -1 if there is no Initial Response. format:Int32], map[description:SASL mechanism specific "Initial Response". format:Byte n]

Source references

Full definition and evidence JSON

Definition sources

center · PostgreSQL 18 · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f

Text language: en · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f