PostgreSQL Source Code: src/include/libpq/protocol.h Source File

PostgreSQL Source Code git master
protocol.h
Go to the documentation of this file.
1/*-------------------------------------------------------------------------
2 *
3 * protocol.h
4 * Definitions of the request/response codes for the wire protocol.
5 *
6 *
7 * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
8 * Portions Copyright (c) 1994, Regents of the University of California
9 *
10 * src/include/libpq/protocol.h
11 *
12 *-------------------------------------------------------------------------
13 */
14#ifndef PROTOCOL_H
15#define PROTOCOL_H
16
17/* These are the request codes sent by the frontend. */
18
19 #define PqMsg_Bind 'B'
20 #define PqMsg_Close 'C'
21 #define PqMsg_Describe 'D'
22 #define PqMsg_Execute 'E'
23 #define PqMsg_FunctionCall 'F'
24 #define PqMsg_Flush 'H'
25 #define PqMsg_Parse 'P'
26 #define PqMsg_Query 'Q'
27 #define PqMsg_Sync 'S'
28 #define PqMsg_Terminate 'X'
29 #define PqMsg_CopyFail 'f'
30 #define PqMsg_GSSResponse 'p'
31 #define PqMsg_PasswordMessage 'p'
32 #define PqMsg_SASLInitialResponse 'p'
33 #define PqMsg_SASLResponse 'p'
34
35
36/* These are the response codes sent by the backend. */
37
38 #define PqMsg_ParseComplete '1'
39 #define PqMsg_BindComplete '2'
40 #define PqMsg_CloseComplete '3'
41 #define PqMsg_NotificationResponse 'A'
42 #define PqMsg_CommandComplete 'C'
43 #define PqMsg_DataRow 'D'
44 #define PqMsg_ErrorResponse 'E'
45 #define PqMsg_CopyInResponse 'G'
46 #define PqMsg_CopyOutResponse 'H'
47 #define PqMsg_EmptyQueryResponse 'I'
48 #define PqMsg_BackendKeyData 'K'
49 #define PqMsg_NoticeResponse 'N'
50 #define PqMsg_AuthenticationRequest 'R'
51 #define PqMsg_ParameterStatus 'S'
52 #define PqMsg_RowDescription 'T'
53 #define PqMsg_FunctionCallResponse 'V'
54 #define PqMsg_CopyBothResponse 'W'
55 #define PqMsg_ReadyForQuery 'Z'
56 #define PqMsg_NoData 'n'
57 #define PqMsg_PortalSuspended 's'
58 #define PqMsg_ParameterDescription 't'
59 #define PqMsg_NegotiateProtocolVersion 'v'
60
61
62/* These are the codes sent by both the frontend and backend. */
63
64 #define PqMsg_CopyDone 'c'
65 #define PqMsg_CopyData 'd'
66
67
68/* These are the codes sent by parallel workers to leader processes. */
69
70 #define PqMsg_Progress 'P'
71
72
73/* Replication codes sent by the primary (wrapped in CopyData messages). */
74
75 #define PqReplMsg_Keepalive 'k'
76 #define PqReplMsg_PrimaryStatusUpdate 's'
77 #define PqReplMsg_WALData 'w'
78
79
80/* Replication codes sent by the standby (wrapped in CopyData messages). */
81
82 #define PqReplMsg_HotStandbyFeedback 'h'
83 #define PqReplMsg_PrimaryStatusRequest 'p'
84 #define PqReplMsg_StandbyStatusUpdate 'r'
85
86
87/* Codes used for backups via COPY OUT (wrapped in CopyData messages). */
88
89 #define PqBackupMsg_Manifest 'm'
90 #define PqBackupMsg_NewArchive 'n'
91 #define PqBackupMsg_ProgressReport 'p'
92
93
94/* These are the authentication request codes sent by the backend. */
95
96 #define AUTH_REQ_OK 0 /* User is authenticated */
97 #define AUTH_REQ_KRB4 1 /* Kerberos V4. Not supported any more. */
98 #define AUTH_REQ_KRB5 2 /* Kerberos V5. Not supported any more. */
99 #define AUTH_REQ_PASSWORD 3 /* Password */
100 #define AUTH_REQ_CRYPT 4 /* crypt password. Not supported any more. */
101 #define AUTH_REQ_MD5 5 /* md5 password */
102/* 6 is available. It was used for SCM creds, not supported any more. */
103 #define AUTH_REQ_GSS 7 /* GSSAPI without wrap() */
104 #define AUTH_REQ_GSS_CONT 8 /* Continue GSS exchanges */
105 #define AUTH_REQ_SSPI 9 /* SSPI negotiate without wrap() */
106 #define AUTH_REQ_SASL 10 /* Begin SASL authentication */
107 #define AUTH_REQ_SASL_CONT 11 /* Continue SASL authentication */
108 #define AUTH_REQ_SASL_FIN 12 /* Final SASL message */
109 #define AUTH_REQ_MAX AUTH_REQ_SASL_FIN /* maximum AUTH_REQ_* value */
110
111#endif /* PROTOCOL_H */

AltStyle によって変換されたページ (->オリジナル) /