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28 * Summary: Constants used by to implement the binary protocol.
30 * Copy: See Copyright for the status of this software.
32 * Author: Trond Norbye <trond.norbye@sun.com>
35 #ifndef LIBMEMCACHED_MEMCACHED_PROTOCOL_BINARY_H
36 #define LIBMEMCACHED_MEMCACHED_PROTOCOL_BINARY_H
38 #if defined(BUILDING_LIBMEMCACHED)
43 * This file contains definitions of the constants and packet formats
44 * defined in the binary specification. Please note that you _MUST_ remember
45 * to convert each multibyte field to / from network byte order to / from
54 * Definition of the legal "magic" values used in a packet.
55 * See section 3.1 Magic byte
58 PROTOCOL_BINARY_REQ
= 0x80,
59 PROTOCOL_BINARY_RES
= 0x81
60 } protocol_binary_magic
;
63 * Definition of the valid response status numbers.
64 * See section 3.2 Response Status
67 PROTOCOL_BINARY_RESPONSE_SUCCESS
= 0x00,
68 PROTOCOL_BINARY_RESPONSE_KEY_ENOENT
= 0x01,
69 PROTOCOL_BINARY_RESPONSE_KEY_EEXISTS
= 0x02,
70 PROTOCOL_BINARY_RESPONSE_E2BIG
= 0x03,
71 PROTOCOL_BINARY_RESPONSE_EINVAL
= 0x04,
72 PROTOCOL_BINARY_RESPONSE_NOT_STORED
= 0x05,
73 PROTOCOL_BINARY_RESPONSE_UNKNOWN_COMMAND
= 0x81,
74 PROTOCOL_BINARY_RESPONSE_ENOMEM
= 0x82
75 } protocol_binary_response_status
;
78 * Defintion of the different command opcodes.
79 * See section 3.3 Command Opcodes
82 PROTOCOL_BINARY_CMD_GET
= 0x00,
83 PROTOCOL_BINARY_CMD_SET
= 0x01,
84 PROTOCOL_BINARY_CMD_ADD
= 0x02,
85 PROTOCOL_BINARY_CMD_REPLACE
= 0x03,
86 PROTOCOL_BINARY_CMD_DELETE
= 0x04,
87 PROTOCOL_BINARY_CMD_INCREMENT
= 0x05,
88 PROTOCOL_BINARY_CMD_DECREMENT
= 0x06,
89 PROTOCOL_BINARY_CMD_QUIT
= 0x07,
90 PROTOCOL_BINARY_CMD_FLUSH
= 0x08,
91 PROTOCOL_BINARY_CMD_GETQ
= 0x09,
92 PROTOCOL_BINARY_CMD_NOOP
= 0x0a,
93 PROTOCOL_BINARY_CMD_VERSION
= 0x0b,
94 PROTOCOL_BINARY_CMD_GETK
= 0x0c,
95 PROTOCOL_BINARY_CMD_GETKQ
= 0x0d,
96 PROTOCOL_BINARY_CMD_APPEND
= 0x0e,
97 PROTOCOL_BINARY_CMD_PREPEND
= 0x0f,
98 PROTOCOL_BINARY_CMD_STAT
= 0x10,
99 PROTOCOL_BINARY_CMD_SETQ
= 0x11,
100 PROTOCOL_BINARY_CMD_ADDQ
= 0x12,
101 PROTOCOL_BINARY_CMD_REPLACEQ
= 0x13,
102 PROTOCOL_BINARY_CMD_DELETEQ
= 0x14,
103 PROTOCOL_BINARY_CMD_INCREMENTQ
= 0x15,
104 PROTOCOL_BINARY_CMD_DECREMENTQ
= 0x16,
105 PROTOCOL_BINARY_CMD_QUITQ
= 0x17,
106 PROTOCOL_BINARY_CMD_FLUSHQ
= 0x18,
107 PROTOCOL_BINARY_CMD_APPENDQ
= 0x19,
108 PROTOCOL_BINARY_CMD_PREPENDQ
= 0x1a
109 } protocol_binary_command
;
112 * Definition of the data types in the packet
113 * See section 3.4 Data Types
116 PROTOCOL_BINARY_RAW_BYTES
= 0x00
117 } protocol_binary_datatypes
;
120 * Definition of the header structure for a request packet.
136 } protocol_binary_request_header
;
139 * Definition of the header structure for a response packet.
155 } protocol_binary_response_header
;
158 * Definition of a request-packet containing no extras
162 protocol_binary_request_header header
;
164 uint8_t bytes
[sizeof(protocol_binary_request_header
)];
165 } protocol_binary_request_no_extras
;
168 * Definition of a response-packet containing no extras
172 protocol_binary_response_header header
;
174 uint8_t bytes
[sizeof(protocol_binary_response_header
)];
175 } protocol_binary_response_no_extras
;
178 * Definition of the packet used by the get, getq, getk and getkq command.
181 typedef protocol_binary_request_no_extras protocol_binary_request_get
;
182 typedef protocol_binary_request_no_extras protocol_binary_request_getq
;
183 typedef protocol_binary_request_no_extras protocol_binary_request_getk
;
184 typedef protocol_binary_request_no_extras protocol_binary_request_getkq
;
187 * Definition of the packet returned from a successful get, getq, getk and
193 protocol_binary_response_header header
;
198 uint8_t bytes
[sizeof(protocol_binary_response_header
) + 4];
199 } protocol_binary_response_get
;
201 typedef protocol_binary_response_get protocol_binary_response_getq
;
202 typedef protocol_binary_response_get protocol_binary_response_getk
;
203 typedef protocol_binary_response_get protocol_binary_response_getkq
;
206 * Definition of the packet used by the delete command
209 typedef protocol_binary_request_no_extras protocol_binary_request_delete
;
212 * Definition of the packet returned by the delete command
215 typedef protocol_binary_response_no_extras protocol_binary_response_delete
;
218 * Definition of the packet used by the flush command
220 * Please note that the expiration field is optional, so remember to see
221 * check the header.bodysize to see if it is present.
225 protocol_binary_request_header header
;
230 uint8_t bytes
[sizeof(protocol_binary_request_header
) + 4];
231 } protocol_binary_request_flush
;
234 * Definition of the packet returned by the flush command
237 typedef protocol_binary_response_no_extras protocol_binary_response_flush
;
240 * Definition of the packet used by set, add and replace
245 protocol_binary_request_header header
;
251 uint8_t bytes
[sizeof(protocol_binary_request_header
) + 8];
252 } protocol_binary_request_set
;
253 typedef protocol_binary_request_set protocol_binary_request_add
;
254 typedef protocol_binary_request_set protocol_binary_request_replace
;
257 * Definition of the packet returned by set, add and replace
260 typedef protocol_binary_response_no_extras protocol_binary_response_set
;
261 typedef protocol_binary_response_no_extras protocol_binary_response_add
;
262 typedef protocol_binary_response_no_extras protocol_binary_response_replace
;
265 * Definition of the noop packet
268 typedef protocol_binary_request_no_extras protocol_binary_request_noop
;
271 * Definition of the packet returned by the noop command
274 typedef protocol_binary_response_no_extras protocol_binary_response_noop
;
277 * Definition of the structure used by the increment and decrement
283 protocol_binary_request_header header
;
290 uint8_t bytes
[sizeof(protocol_binary_request_header
) + 20];
291 } protocol_binary_request_incr
;
292 typedef protocol_binary_request_incr protocol_binary_request_decr
;
295 * Definition of the response from an incr or decr command
301 protocol_binary_response_header header
;
306 uint8_t bytes
[sizeof(protocol_binary_response_header
) + 8];
307 } protocol_binary_response_incr
;
308 typedef protocol_binary_response_incr protocol_binary_response_decr
;
311 * Definition of the quit
314 typedef protocol_binary_request_no_extras protocol_binary_request_quit
;
317 * Definition of the packet returned by the quit command
320 typedef protocol_binary_response_no_extras protocol_binary_response_quit
;
323 * Definition of the packet used by append and prepend command
326 typedef protocol_binary_request_no_extras protocol_binary_request_append
;
327 typedef protocol_binary_request_no_extras protocol_binary_request_prepend
;
330 * Definition of the packet returned from a successful append or prepend
333 typedef protocol_binary_response_no_extras protocol_binary_response_append
;
334 typedef protocol_binary_response_no_extras protocol_binary_response_prepend
;
337 * Definition of the packet used by the version command
340 typedef protocol_binary_request_no_extras protocol_binary_request_version
;
343 * Definition of the packet returned from a successful version command
346 typedef protocol_binary_response_no_extras protocol_binary_response_version
;
350 * Definition of the packet used by the stats command.
353 typedef protocol_binary_request_no_extras protocol_binary_request_stats
;
356 * Definition of the packet returned from a successful stats command
359 typedef protocol_binary_response_no_extras protocol_binary_response_stats
;
364 #endif /* BUILDING_LIBMEMCACHED */
365 #endif /* LIBMEMCACHED_MEMCACHED_PROTOCOL_BINARY_H */