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Byte1('p')
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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.

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Int32
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Length of message contents in bytes, including self.

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\n
String
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Name of the SASL authentication mechanism that the client selected.

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\n
Int32
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\n

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

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Byten
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SASL mechanism specific \"Initial Response\".

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Byte1('p')
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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.

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\n
Int32
\n
\n

Length of message contents in bytes, including self.

\n
\n
String
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\n

Name of the SASL authentication mechanism that the client selected.

\n
\n
Int32
\n
\n

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

\n
\n
Byten
\n
\n

SASL mechanism specific \"Initial Response\".

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\n
\n
\n
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\n
\n
\n
Byte1('p')
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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.

\n
\n
Int32
\n
\n

Length of message contents in bytes, including self.

\n
\n
String
\n
\n

Name of the SASL authentication mechanism that the client selected.

\n
\n
Int32
\n
\n

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

\n
\n
Byten
\n
\n

SASL mechanism specific \"Initial Response\".

\n
\n
\n
\n
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\n
\n
\n
Byte1('p')
\n
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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.

\n
\n
Int32
\n
\n

Length of message contents in bytes, including self.

\n
\n
String
\n
\n

Name of the SASL authentication mechanism that the client selected.

\n
\n
Int32
\n
\n

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

\n
\n
Byten
\n
\n

SASL mechanism specific \"Initial Response\".

\n
\n
\n
\n
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\n
\n
\n
Byte1('p')
\n
\n

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.

\n
\n
Int32
\n
\n

Length of message contents in bytes, including self.

\n
\n
String
\n
\n

Name of the SASL authentication mechanism that the client selected.

\n
\n
Int32
\n
\n

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

\n
\n
Byten
\n
\n

SASL mechanism specific \"Initial Response\".

\n
\n
\n
\n
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\n
\n
\n
Byte1('p')
\n
\n

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.

\n
\n
Int32
\n
\n

Length of message contents in bytes, including self.

\n
\n
String
\n
\n

Name of the SASL authentication mechanism that the client selected.

\n
\n
Int32
\n
\n

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

\n
\n
Byten
\n
\n

SASL mechanism specific \"Initial Response\".

\n
\n
\n
\n
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\n
\n
\n
Byte1('p')
\n
\n

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.

\n
\n
Int32
\n
\n

Length of message contents in bytes, including self.

\n
\n
String
\n
\n

Name of the SASL authentication mechanism that the client selected.

\n
\n
Int32
\n
\n

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

\n
\n
Byten
\n
\n

SASL mechanism specific \"Initial Response\".

\n
\n
\n
\n
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\n
\n
\n
Byte1('p')
\n
\n

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.

\n
\n
Int32
\n
\n

Length of message contents in bytes, including self.

\n
\n
String
\n
\n

Name of the SASL authentication mechanism that the client selected.

\n
\n
Int32
\n
\n

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

\n
\n
Byten
\n
\n

SASL mechanism specific \"Initial Response\".

\n
\n
\n
\n
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\n
\n
\n
Byte1('p')
\n
\n

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.

\n
\n
Int32
\n
\n

Length of message contents in bytes, including self.

\n
\n
String
\n
\n

Name of the SASL authentication mechanism that the client selected.

\n
\n
Int32
\n
\n

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

\n
\n
Byten
\n
\n

SASL mechanism specific \"Initial Response\".

\n
\n
\n
\n
", "manual_path": "/docs/18/protocol-message-formats.html", "comparison_data": {"fields": [{"format": "Byte1('p')", "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": "Int32", "description": "Length of message contents in bytes, including self."}, {"format": "String", "description": "Name of the SASL authentication mechanism that the client selected."}, {"format": "Int32", "description": "Length of SASL mechanism specific \"Initial Client Response\" that follows, or -1 if there is no Initial Response."}, {"format": "Byte n", "description": "SASL mechanism specific \"Initial Response\"."}], "direction": "F"}, "comparison_hash": "7a1a47ee3f5968cd8f2ba9e1402092e0e0533d713c01e722449887f442788a33"}, "19": {"facts": [{"label": "Direction", "value": "Frontend \u2192 backend"}, {"label": "First wire field", "value": "Byte1('p')"}, {"label": "Field entries", "value": "5"}, {"label": "Documented flow contexts", "value": "Start-up"}], "fields": [{"format": "Byte1('p')", "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": "Int32", "description": "Length of message contents in bytes, including self."}, {"format": "String", "description": "Name of the SASL authentication mechanism that the client selected."}, {"format": "Int32", "description": "Length of SASL mechanism specific \"Initial Client Response\" that follows, or -1 if there is no Initial Response."}, {"format": "Byte n", "description": "SASL mechanism specific \"Initial Response\"."}], "tables": [{"key": "fields", "rows": [{"c0": "1", "c1": "Byte1('p')", "c2": "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."}, {"c0": "2", "c1": "Int32", "c2": "Length of message contents in bytes, including self."}, {"c0": "3", "c1": "String", "c2": "Name of the SASL authentication mechanism that the client selected."}, {"c0": "4", "c1": "Int32", "c2": "Length of SASL mechanism specific \"Initial Client Response\" that follows, or -1 if there is no Initial Response."}, {"c0": "5", "c1": "Byte n", "c2": "SASL mechanism specific \"Initial Response\"."}], "title": "Wire fields in documented order", "columns": [{"key": "c0", "label": "Position"}, {"key": "c1", "label": "Format"}, {"key": "c2", "label": "Meaning"}]}], "related": [{"url": "/docs/19/protocol-flow.html", "label": "Protocol flow and exchange examples"}, {"url": "/docs/19/protocol-overview.html", "label": "Protocol overview"}, {"url": "/docs/19/protocol-flow.html#PROTOCOL-FLOW-START-UP", "label": "Start-up"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v19beta4/postgresql-19beta4.tar.bz2", "label": "19beta4", "major": "19", "channel": "preview", "revision": "83157ee9c599d03b2f7a3d73ef3a56ec24e0e79cc2b3501a64d1364f56398c86"}, "sources": [{"url": "/docs/19/protocol-message-formats.html#PROTOCOL-MESSAGE-FORMATS-SASLINITIALRESPONSE", "path": "protocol-message-formats.html", "label": "PostgreSQL 19 English manual", "sha256": "90ffd4417d4975d088424b23a513f1d79ac914225ad7e239a12f44d0dd2248e4"}], "sections": [{"title": "Framing and repetition", "paragraphs": ["The complete definition below retains repetition, counts and conditional fields. A numbered table row is a documented field definition, not a fixed byte offset. Integer encodings and flow rules follow the same-version protocol chapter."]}], "direction": "F", "signature": "SASLInitialResponse (F)", "description": ["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."], "manual_html": "
\n
\n
\n
Byte1('p')
\n
\n

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.

\n
\n
Int32
\n
\n

Length of message contents in bytes, including self.

\n
\n
String
\n
\n

Name of the SASL authentication mechanism that the client selected.

\n
\n
Int32
\n
\n

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

\n
\n
Byten
\n
\n

SASL mechanism specific \"Initial Response\".

\n
\n
\n
\n
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\n
\n
\n
Byte1('p')
\n
\n

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.

\n
\n
Int32
\n
\n

Length of message contents in bytes, including self.

\n
\n
String
\n
\n

Name of the SASL authentication mechanism that the client selected.

\n
\n
Int32
\n
\n

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

\n
\n
Byten
\n
\n

SASL mechanism specific \"Initial Response\".

\n
\n
\n
\n
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\n
\n
Byte1('p')
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\n

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.

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Int32
\n
\n

Length of message contents in bytes, including self.

\n
\n
String
\n
\n

Name of the SASL authentication mechanism that the client selected.

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\n
Int32
\n
\n

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

\n
\n
Byten
\n
\n

SASL mechanism specific \"Initial Response\".

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\n
\n
\n
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