semver: 1.0 -> 1
[awesomized/libmemcached] / include / libmemcachedprotocol-0 / binary.h
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+/*
+    +--------------------------------------------------------------------+
+    | libmemcached - C/C++ Client Library for memcached                  |
+    +--------------------------------------------------------------------+
+    | Redistribution and use in source and binary forms, with or without |
+    | modification, are permitted under the terms of the BSD license.    |
+    | You should have received a copy of the license in a bundled file   |
+    | named LICENSE; in case you did not receive a copy you can review   |
+    | the terms online at: https://opensource.org/licenses/BSD-3-Clause  |
+    +--------------------------------------------------------------------+
+    | Copyright (c) 2006-2014 Brian Aker   https://datadifferential.com/ |
+    | Copyright (c) 2020 Michael Wallner   <mike@php.net>                |
+    +--------------------------------------------------------------------+
+*/
+
+#ifndef PROTOCOL_BINARY_H
+#define PROTOCOL_BINARY_H
+
+#include "libmemcachedprotocol-0/vbucket.h"
+
+/**
+ * \addtogroup Protocol
+ * @{
+ */
+
+/**
+ * This file contains definitions of the constants and packet formats
+ * defined in the binary specification. Please note that you _MUST_ remember
+ * to convert each multibyte field to / from network byte order to / from
+ * host order.
+ */
+#ifdef __cplusplus
+# include <cstdint>
+extern "C" {
+#else
+# include <stdint.h>
+#endif
+
+/**
+ * Definition of the legal "magic" values used in a packet.
+ * See section 3.1 Magic byte
+ */
+typedef enum { PROTOCOL_BINARY_REQ = 0x80, PROTOCOL_BINARY_RES = 0x81 } protocol_binary_magic;
+
+/**
+ * Definition of the valid response status numbers.
+ * See section 3.2 Response Status
+ */
+typedef enum {
+  PROTOCOL_BINARY_RESPONSE_SUCCESS = 0x00,
+  PROTOCOL_BINARY_RESPONSE_KEY_ENOENT = 0x01,
+  PROTOCOL_BINARY_RESPONSE_KEY_EEXISTS = 0x02,
+  PROTOCOL_BINARY_RESPONSE_E2BIG = 0x03,
+  PROTOCOL_BINARY_RESPONSE_EINVAL = 0x04,
+  PROTOCOL_BINARY_RESPONSE_NOT_STORED = 0x05,
+  PROTOCOL_BINARY_RESPONSE_DELTA_BADVAL = 0x06,
+  PROTOCOL_BINARY_RESPONSE_NOT_MY_VBUCKET = 0x07,
+  PROTOCOL_BINARY_RESPONSE_AUTH_ERROR = 0x20,
+  PROTOCOL_BINARY_RESPONSE_AUTH_CONTINUE = 0x21,
+  PROTOCOL_BINARY_RESPONSE_UNKNOWN_COMMAND = 0x81,
+  PROTOCOL_BINARY_RESPONSE_ENOMEM = 0x82,
+  PROTOCOL_BINARY_RESPONSE_NOT_SUPPORTED = 0x83,
+  PROTOCOL_BINARY_RESPONSE_EINTERNAL = 0x84,
+  PROTOCOL_BINARY_RESPONSE_EBUSY = 0x85,
+  PROTOCOL_BINARY_RESPONSE_ETMPFAIL = 0x86
+} protocol_binary_response_status;
+
+/**
+ * Defintion of the different command opcodes.
+ * See section 3.3 Command Opcodes
+ */
+typedef enum {
+  PROTOCOL_BINARY_CMD_GET = 0x00,
+  PROTOCOL_BINARY_CMD_SET = 0x01,
+  PROTOCOL_BINARY_CMD_ADD = 0x02,
+  PROTOCOL_BINARY_CMD_REPLACE = 0x03,
+  PROTOCOL_BINARY_CMD_DELETE = 0x04,
+  PROTOCOL_BINARY_CMD_INCREMENT = 0x05,
+  PROTOCOL_BINARY_CMD_DECREMENT = 0x06,
+  PROTOCOL_BINARY_CMD_QUIT = 0x07,
+  PROTOCOL_BINARY_CMD_FLUSH = 0x08,
+  PROTOCOL_BINARY_CMD_GETQ = 0x09,
+  PROTOCOL_BINARY_CMD_NOOP = 0x0a,
+  PROTOCOL_BINARY_CMD_VERSION = 0x0b,
+  PROTOCOL_BINARY_CMD_GETK = 0x0c,
+  PROTOCOL_BINARY_CMD_GETKQ = 0x0d,
+  PROTOCOL_BINARY_CMD_APPEND = 0x0e,
+  PROTOCOL_BINARY_CMD_PREPEND = 0x0f,
+  PROTOCOL_BINARY_CMD_STAT = 0x10,
+  PROTOCOL_BINARY_CMD_SETQ = 0x11,
+  PROTOCOL_BINARY_CMD_ADDQ = 0x12,
+  PROTOCOL_BINARY_CMD_REPLACEQ = 0x13,
+  PROTOCOL_BINARY_CMD_DELETEQ = 0x14,
+  PROTOCOL_BINARY_CMD_INCREMENTQ = 0x15,
+  PROTOCOL_BINARY_CMD_DECREMENTQ = 0x16,
+  PROTOCOL_BINARY_CMD_QUITQ = 0x17,
+  PROTOCOL_BINARY_CMD_FLUSHQ = 0x18,
+  PROTOCOL_BINARY_CMD_APPENDQ = 0x19,
+  PROTOCOL_BINARY_CMD_PREPENDQ = 0x1a,
+  PROTOCOL_BINARY_CMD_VERBOSITY = 0x1b,
+  PROTOCOL_BINARY_CMD_TOUCH = 0x1c,
+  PROTOCOL_BINARY_CMD_GAT = 0x1d,
+  PROTOCOL_BINARY_CMD_GATQ = 0x1e,
+  PROTOCOL_BINARY_CMD_GATK = 0x23,
+  PROTOCOL_BINARY_CMD_GATKQ = 0x24,
+
+  PROTOCOL_BINARY_CMD_SASL_LIST_MECHS = 0x20,
+  PROTOCOL_BINARY_CMD_SASL_AUTH = 0x21,
+  PROTOCOL_BINARY_CMD_SASL_STEP = 0x22,
+
+  /* These commands are used for range operations and exist within
+   * this header for use in other projects.  Range operations are
+   * not expected to be implemented in the memcached server itself.
+   */
+  PROTOCOL_BINARY_CMD_RGET = 0x30,
+  PROTOCOL_BINARY_CMD_RSET = 0x31,
+  PROTOCOL_BINARY_CMD_RSETQ = 0x32,
+  PROTOCOL_BINARY_CMD_RAPPEND = 0x33,
+  PROTOCOL_BINARY_CMD_RAPPENDQ = 0x34,
+  PROTOCOL_BINARY_CMD_RPREPEND = 0x35,
+  PROTOCOL_BINARY_CMD_RPREPENDQ = 0x36,
+  PROTOCOL_BINARY_CMD_RDELETE = 0x37,
+  PROTOCOL_BINARY_CMD_RDELETEQ = 0x38,
+  PROTOCOL_BINARY_CMD_RINCR = 0x39,
+  PROTOCOL_BINARY_CMD_RINCRQ = 0x3a,
+  PROTOCOL_BINARY_CMD_RDECR = 0x3b,
+  PROTOCOL_BINARY_CMD_RDECRQ = 0x3c,
+  /* End Range operations */
+
+  /* VBucket commands */
+  PROTOCOL_BINARY_CMD_SET_VBUCKET = 0x3d,
+  PROTOCOL_BINARY_CMD_GET_VBUCKET = 0x3e,
+  PROTOCOL_BINARY_CMD_DEL_VBUCKET = 0x3f,
+  /* End VBucket commands */
+
+  /* TAP commands */
+  PROTOCOL_BINARY_CMD_TAP_CONNECT = 0x40,
+  PROTOCOL_BINARY_CMD_TAP_MUTATION = 0x41,
+  PROTOCOL_BINARY_CMD_TAP_DELETE = 0x42,
+  PROTOCOL_BINARY_CMD_TAP_FLUSH = 0x43,
+  PROTOCOL_BINARY_CMD_TAP_OPAQUE = 0x44,
+  PROTOCOL_BINARY_CMD_TAP_VBUCKET_SET = 0x45,
+  PROTOCOL_BINARY_CMD_TAP_CHECKPOINT_START = 0x46,
+  PROTOCOL_BINARY_CMD_TAP_CHECKPOINT_END = 0x47,
+  /* End TAP */
+
+  PROTOCOL_BINARY_CMD_LAST_RESERVED = 0xef,
+
+  /* Scrub the data */
+  PROTOCOL_BINARY_CMD_SCRUB = 0xf0
+} protocol_binary_command;
+
+/**
+ * Definition of the data types in the packet
+ * See section 3.4 Data Types
+ */
+typedef enum { PROTOCOL_BINARY_RAW_BYTES = 0x00 } protocol_binary_datatypes;
+
+/**
+ * Definition of the header structure for a request packet.
+ * See section 2
+ */
+typedef union {
+  struct {
+    uint8_t magic;
+    uint8_t opcode;
+    uint16_t keylen;
+    uint8_t extlen;
+    uint8_t datatype;
+    uint16_t vbucket;
+    uint32_t bodylen;
+    uint32_t opaque;
+    uint64_t cas;
+  } request;
+  uint8_t bytes[24];
+} protocol_binary_request_header;
+
+/**
+ * Definition of the header structure for a response packet.
+ * See section 2
+ */
+typedef union {
+  struct {
+    uint8_t magic;
+    uint8_t opcode;
+    uint16_t keylen;
+    uint8_t extlen;
+    uint8_t datatype;
+    uint16_t status;
+    uint32_t bodylen;
+    uint32_t opaque;
+    uint64_t cas;
+  } response;
+  uint8_t bytes[24];
+} protocol_binary_response_header;
+
+/**
+ * Definition of a request-packet containing no extras
+ */
+union protocol_binary_request_no_extras {
+  struct {
+    protocol_binary_request_header header;
+  } message;
+  uint8_t bytes[sizeof(protocol_binary_request_header)];
+};
+typedef union protocol_binary_request_no_extras protocol_binary_request_no_extras;
+
+/**
+ * Definition of a response-packet containing no extras
+ */
+typedef union {
+  struct {
+    protocol_binary_response_header header;
+  } message;
+  uint8_t bytes[sizeof(protocol_binary_response_header)];
+} protocol_binary_response_no_extras;
+
+/**
+ * Definition of the packet used by the get, getq, getk and getkq command.
+ * See section 4
+ */
+typedef protocol_binary_request_no_extras protocol_binary_request_get;
+typedef protocol_binary_request_no_extras protocol_binary_request_getq;
+typedef protocol_binary_request_no_extras protocol_binary_request_getk;
+typedef protocol_binary_request_no_extras protocol_binary_request_getkq;
+
+/**
+ * Definition of the packet returned from a successful get, getq, getk and
+ * getkq.
+ * See section 4
+ */
+typedef union {
+  struct {
+    protocol_binary_response_header header;
+    struct {
+      uint32_t flags;
+    } body;
+  } message;
+  uint8_t bytes[sizeof(protocol_binary_response_header) + 4];
+} protocol_binary_response_get;
+
+typedef protocol_binary_response_get protocol_binary_response_getq;
+typedef protocol_binary_response_get protocol_binary_response_getk;
+typedef protocol_binary_response_get protocol_binary_response_getkq;
+
+/**
+ * Definition of the packet used by the delete command
+ * See section 4
+ */
+typedef protocol_binary_request_no_extras protocol_binary_request_delete;
+
+/**
+ * Definition of the packet returned by the delete command
+ * See section 4
+ */
+typedef protocol_binary_response_no_extras protocol_binary_response_delete;
+
+/**
+ * Definition of the packet used by the flush command
+ * See section 4
+ * Please note that the expiration field is optional, so remember to see
+ * check the header.bodysize to see if it is present.
+ */
+typedef union {
+  struct {
+    protocol_binary_request_header header;
+    struct {
+      uint32_t expiration;
+    } body;
+  } message;
+  uint8_t bytes[sizeof(protocol_binary_request_header) + 4];
+} protocol_binary_request_flush;
+
+/**
+ * Definition of the packet returned by the flush command
+ * See section 4
+ */
+typedef protocol_binary_response_no_extras protocol_binary_response_flush;
+
+/**
+ * Definition of the packet used by set, add and replace
+ * See section 4
+ */
+typedef union {
+  struct {
+    protocol_binary_request_header header;
+    struct {
+      uint32_t flags;
+      uint32_t expiration;
+    } body;
+  } message;
+  uint8_t bytes[sizeof(protocol_binary_request_header) + 8];
+} protocol_binary_request_set;
+typedef protocol_binary_request_set protocol_binary_request_add;
+typedef protocol_binary_request_set protocol_binary_request_replace;
+
+/**
+ * Definition of the packet returned by set, add and replace
+ * See section 4
+ */
+typedef protocol_binary_response_no_extras protocol_binary_response_set;
+typedef protocol_binary_response_no_extras protocol_binary_response_add;
+typedef protocol_binary_response_no_extras protocol_binary_response_replace;
+
+/**
+ * Definition of the noop packet
+ * See section 4
+ */
+typedef protocol_binary_request_no_extras protocol_binary_request_noop;
+
+/**
+ * Definition of the packet returned by the noop command
+ * See section 4
+ */
+typedef protocol_binary_response_no_extras protocol_binary_response_noop;
+
+/**
+ * Definition of the structure used by the increment and decrement
+ * command.
+ * See section 4
+ */
+typedef union {
+  struct {
+    protocol_binary_request_header header;
+    struct {
+      uint64_t delta;
+      uint64_t initial;
+      uint32_t expiration;
+    } body;
+  } message;
+  uint8_t bytes[sizeof(protocol_binary_request_header) + 20];
+} protocol_binary_request_incr;
+typedef protocol_binary_request_incr protocol_binary_request_decr;
+
+/**
+ * Definition of the response from an incr or decr command
+ * command.
+ * See section 4
+ */
+typedef union {
+  struct {
+    protocol_binary_response_header header;
+    struct {
+      uint64_t value;
+    } body;
+  } message;
+  uint8_t bytes[sizeof(protocol_binary_response_header) + 8];
+} protocol_binary_response_incr;
+typedef protocol_binary_response_incr protocol_binary_response_decr;
+
+/**
+ * Definition of the quit
+ * See section 4
+ */
+typedef protocol_binary_request_no_extras protocol_binary_request_quit;
+
+/**
+ * Definition of the packet returned by the quit command
+ * See section 4
+ */
+typedef protocol_binary_response_no_extras protocol_binary_response_quit;
+
+/**
+ * Definition of the packet used by append and prepend command
+ * See section 4
+ */
+typedef protocol_binary_request_no_extras protocol_binary_request_append;
+typedef protocol_binary_request_no_extras protocol_binary_request_prepend;
+
+/**
+ * Definition of the packet returned from a successful append or prepend
+ * See section 4
+ */
+typedef protocol_binary_response_no_extras protocol_binary_response_append;
+typedef protocol_binary_response_no_extras protocol_binary_response_prepend;
+
+/**
+ * Definition of the packet used by the version command
+ * See section 4
+ */
+typedef protocol_binary_request_no_extras protocol_binary_request_version;
+
+/**
+ * Definition of the packet returned from a successful version command
+ * See section 4
+ */
+typedef protocol_binary_response_no_extras protocol_binary_response_version;
+
+/**
+ * Definition of the packet used by the stats command.
+ * See section 4
+ */
+typedef protocol_binary_request_no_extras protocol_binary_request_stats;
+
+/**
+ * Definition of the packet returned from a successful stats command
+ * See section 4
+ */
+typedef protocol_binary_response_no_extras protocol_binary_response_stats;
+
+/**
+ * Definition of the packet used by the verbosity command
+ */
+typedef union {
+  struct {
+    protocol_binary_request_header header;
+    struct {
+      uint32_t level;
+    } body;
+  } message;
+  uint8_t bytes[sizeof(protocol_binary_request_header) + 4];
+} protocol_binary_request_verbosity;
+
+/**
+ * Definition of the packet returned from the verbosity command
+ */
+typedef protocol_binary_response_no_extras protocol_binary_response_verbosity;
+
+/**
+ * Definition of the packet used by the touch command.
+ */
+typedef union {
+  struct {
+    protocol_binary_request_header header;
+    struct {
+      uint32_t expiration;
+    } body;
+  } message;
+  uint8_t bytes[sizeof(protocol_binary_request_header) + 4];
+} protocol_binary_request_touch;
+
+/**
+ * Definition of the packet returned from the touch command
+ */
+typedef protocol_binary_response_no_extras protocol_binary_response_touch;
+
+/**
+ * Definition of the packet used by the GAT(Q) command.
+ */
+typedef union {
+  struct {
+    protocol_binary_request_header header;
+    struct {
+      uint32_t expiration;
+    } body;
+  } message;
+  uint8_t bytes[sizeof(protocol_binary_request_header) + 4];
+} protocol_binary_request_gat;
+
+typedef protocol_binary_request_gat protocol_binary_request_gatq;
+
+/**
+ * Definition of the packet returned from the GAT(Q)
+ */
+typedef protocol_binary_response_get protocol_binary_response_gat;
+typedef protocol_binary_response_get protocol_binary_response_gatq;
+
+/**
+ * Definition of a request for a range operation.
+ * See http://code.google.com/p/memcached/wiki/RangeOps
+ *
+ * These types are used for range operations and exist within
+ * this header for use in other projects.  Range operations are
+ * not expected to be implemented in the memcached server itself.
+ */
+typedef union {
+  struct {
+    protocol_binary_response_header header;
+    struct {
+      uint16_t size;
+      uint8_t reserved;
+      uint8_t flags;
+      uint32_t max_results;
+    } body;
+  } message;
+  uint8_t bytes[sizeof(protocol_binary_request_header) + 4];
+} protocol_binary_request_rangeop;
+
+typedef protocol_binary_request_rangeop protocol_binary_request_rget;
+typedef protocol_binary_request_rangeop protocol_binary_request_rset;
+typedef protocol_binary_request_rangeop protocol_binary_request_rsetq;
+typedef protocol_binary_request_rangeop protocol_binary_request_rappend;
+typedef protocol_binary_request_rangeop protocol_binary_request_rappendq;
+typedef protocol_binary_request_rangeop protocol_binary_request_rprepend;
+typedef protocol_binary_request_rangeop protocol_binary_request_rprependq;
+typedef protocol_binary_request_rangeop protocol_binary_request_rdelete;
+typedef protocol_binary_request_rangeop protocol_binary_request_rdeleteq;
+typedef protocol_binary_request_rangeop protocol_binary_request_rincr;
+typedef protocol_binary_request_rangeop protocol_binary_request_rincrq;
+typedef protocol_binary_request_rangeop protocol_binary_request_rdecr;
+typedef protocol_binary_request_rangeop protocol_binary_request_rdecrq;
+
+/**
+ * Definition of tap commands
+ * See To be written
+ *
+ */
+
+typedef union {
+  struct {
+    protocol_binary_request_header header;
+    struct {
+      /**
+       * flags is a bitmask used to set properties for the
+       * the connection. Please In order to be forward compatible
+       * you should set all undefined bits to 0.
+       *
+       * If the bit require extra userdata, it will be stored
+       * in the user-data field of the body (passed to the engine
+       * as enginespeciffic). That means that when you parse the
+       * flags and the engine-specific data, you have to work your
+       * way from bit 0 and upwards to find the correct offset for
+       * the data.
+       *
+       */
+      uint32_t flags;
+
+      /**
+       * Backfill age
+       *
+       * By using this flag you can limit the amount of data being
+       * transmitted. If you don't specify a backfill age, the
+       * server will transmit everything it contains.
+       *
+       * The first 8 bytes in the engine specific data contains
+       * the oldest entry (from epoc) you're interested in.
+       * Specifying a time in the future (for the server you are
+       * connecting to), will cause it to start streaming current
+       * changes.
+       */
+#define TAP_CONNECT_FLAG_BACKFILL 0x01
+      /**
+       * Dump will cause the server to send the data stored on the
+       * server, but disconnect when the keys stored in the server
+       * are transmitted.
+       */
+#define TAP_CONNECT_FLAG_DUMP 0x02
+      /**
+       * The body contains a list of 16 bits words in network byte
+       * order specifying the vbucket ids to monitor. The first 16
+       * bit word contains the number of buckets. The number of 0
+       * means "all buckets"
+       */
+#define TAP_CONNECT_FLAG_LIST_VBUCKETS 0x04
+      /**
+       * The responsibility of the vbuckets is to be transferred
+       * over to the caller when all items are transferred.
+       */
+#define TAP_CONNECT_FLAG_TAKEOVER_VBUCKETS 0x08
+      /**
+       * The tap consumer supports ack'ing of tap messages
+       */
+#define TAP_CONNECT_SUPPORT_ACK 0x10
+      /**
+       * The tap consumer would prefer to just get the keys
+       * back. If the engine supports this it will set
+       * the TAP_FLAG_NO_VALUE flag in each of the
+       * tap packets returned.
+       */
+#define TAP_CONNECT_REQUEST_KEYS_ONLY 0x20
+      /**
+       * The body contains a list of (vbucket_id, last_checkpoint_id)
+       * pairs. This provides the checkpoint support in TAP streams.
+       * The last checkpoint id represents the last checkpoint that
+       * was successfully persisted.
+       */
+#define TAP_CONNECT_CHECKPOINT 0x40
+      /**
+       * The tap consumer is a registered tap client, which means that
+       * the tap server will maintain its checkpoint cursor permanently.
+       */
+#define TAP_CONNECT_REGISTERED_CLIENT 0x80
+    } body;
+  } message;
+  uint8_t bytes[sizeof(protocol_binary_request_header) + 4];
+} protocol_binary_request_tap_connect;
+
+typedef union {
+  struct {
+    protocol_binary_request_header header;
+    struct {
+      struct {
+        uint16_t enginespecific_length;
+        /*
+         * The flag section support the following flags
+         */
+        /**
+         * Request that the consumer send a response packet
+         * for this packet. The opaque field must be preserved
+         * in the response.
+         */
+#define TAP_FLAG_ACK 0x01
+        /**
+         * The value for the key is not included in the packet
+         */
+#define TAP_FLAG_NO_VALUE 0x02
+        uint16_t flags;
+        uint8_t ttl;
+        uint8_t res1;
+        uint8_t res2;
+        uint8_t res3;
+      } tap;
+      struct {
+        uint32_t flags;
+        uint32_t expiration;
+      } item;
+    } body;
+  } message;
+  uint8_t bytes[sizeof(protocol_binary_request_header) + 16];
+} protocol_binary_request_tap_mutation;
+
+typedef union {
+  struct {
+    protocol_binary_request_header header;
+    struct {
+      struct {
+        uint16_t enginespecific_length;
+        /**
+         * See the definition of the flags for
+         * protocol_binary_request_tap_mutation for a description
+         * of the available flags.
+         */
+        uint16_t flags;
+        uint8_t ttl;
+        uint8_t res1;
+        uint8_t res2;
+        uint8_t res3;
+      } tap;
+    } body;
+  } message;
+  uint8_t bytes[sizeof(protocol_binary_request_header) + 8];
+} protocol_binary_request_tap_no_extras;
+
+typedef protocol_binary_request_tap_no_extras protocol_binary_request_tap_delete;
+typedef protocol_binary_request_tap_no_extras protocol_binary_request_tap_flush;
+typedef protocol_binary_request_tap_no_extras protocol_binary_request_tap_opaque;
+typedef protocol_binary_request_tap_no_extras protocol_binary_request_tap_vbucket_set;
+
+/**
+ * Definition of the packet used by the scrub.
+ */
+typedef protocol_binary_request_no_extras protocol_binary_request_scrub;
+
+/**
+ * Definition of the packet returned from scrub.
+ */
+typedef protocol_binary_response_no_extras protocol_binary_response_scrub;
+
+/**
+ * Definition of the packet used by set vbucket
+ */
+typedef union {
+  struct {
+    protocol_binary_request_header header;
+    struct {
+      vbucket_state_t state;
+    } body;
+  } message;
+  uint8_t bytes[sizeof(protocol_binary_request_header) + sizeof(vbucket_state_t)];
+} protocol_binary_request_set_vbucket;
+/**
+ * Definition of the packet returned from set vbucket
+ */
+typedef protocol_binary_response_no_extras protocol_binary_response_set_vbucket;
+/**
+ * Definition of the packet used by del vbucket
+ */
+typedef protocol_binary_request_no_extras protocol_binary_request_del_vbucket;
+/**
+ * Definition of the packet returned from del vbucket
+ */
+typedef protocol_binary_response_no_extras protocol_binary_response_del_vbucket;
+
+/**
+ * Definition of the packet used by get vbucket
+ */
+typedef protocol_binary_request_no_extras protocol_binary_request_get_vbucket;
+
+/**
+ * Definition of the packet returned from get vbucket
+ */
+typedef union {
+  struct {
+    protocol_binary_response_header header;
+    struct {
+      vbucket_state_t state;
+    } body;
+  } message;
+  uint8_t bytes[sizeof(protocol_binary_response_header) + sizeof(vbucket_state_t)];
+} protocol_binary_response_get_vbucket;
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* PROTOCOL_BINARY_H */