fraiseql_wire/protocol/
constants.rs

1//! Postgres protocol constants
2
3/// Protocol version 3.0
4pub const PROTOCOL_VERSION: i32 = 0x0003_0000;
5
6/// Message type tags
7pub mod tags {
8    /// Authentication request
9    pub const AUTHENTICATION: u8 = b'R';
10
11    /// Backend key data
12    pub const BACKEND_KEY_DATA: u8 = b'K';
13
14    /// Command complete
15    pub const COMMAND_COMPLETE: u8 = b'C';
16
17    /// Data row
18    pub const DATA_ROW: u8 = b'D';
19
20    /// Error response
21    pub const ERROR_RESPONSE: u8 = b'E';
22
23    /// Notice response
24    pub const NOTICE_RESPONSE: u8 = b'N';
25
26    /// Parameter status
27    pub const PARAMETER_STATUS: u8 = b'S';
28
29    /// Ready for query
30    pub const READY_FOR_QUERY: u8 = b'Z';
31
32    /// Row description
33    pub const ROW_DESCRIPTION: u8 = b'T';
34
35    /// Empty query response (reply to an empty query string)
36    pub const EMPTY_QUERY_RESPONSE: u8 = b'I';
37
38    /// Asynchronous notification (`LISTEN`/`NOTIFY`)
39    pub const NOTIFICATION_RESPONSE: u8 = b'A';
40
41    /// `CopyInResponse` — server is ready to receive `COPY ... FROM STDIN` data
42    pub const COPY_IN_RESPONSE: u8 = b'G';
43
44    /// `CopyOutResponse` — server is about to send `COPY ... TO STDOUT` data
45    pub const COPY_OUT_RESPONSE: u8 = b'H';
46
47    /// `CopyBothResponse` — bidirectional COPY (streaming replication)
48    pub const COPY_BOTH_RESPONSE: u8 = b'W';
49}
50
51/// Authentication types
52pub mod auth {
53    /// Authentication successful
54    pub const OK: i32 = 0;
55
56    /// Cleartext password required
57    pub const CLEARTEXT_PASSWORD: i32 = 3;
58
59    /// MD5 password required
60    pub const MD5_PASSWORD: i32 = 5;
61
62    /// SASL mechanisms available (Postgres 10+)
63    pub const SASL: i32 = 10;
64
65    /// SASL server challenge
66    pub const SASL_CONTINUE: i32 = 11;
67
68    /// SASL server final message
69    pub const SASL_FINAL: i32 = 12;
70}
71
72/// Transaction status
73pub mod tx_status {
74    /// Idle (not in transaction)
75    pub const IDLE: u8 = b'I';
76
77    /// In transaction block
78    pub const IN_TRANSACTION: u8 = b'T';
79
80    /// Failed transaction (queries will be rejected until END)
81    pub const FAILED: u8 = b'E';
82}
fraiseql_wire/protocol/constants.rs

fraiseql_wire/protocol/
constants.rs
