# Error Codes - memcached_return_t

## SYNOPSIS

#include <libmemcached/memcached.h>

  Compile and link with -lmemcached

bool memcached_success(memcached_return_t rc)

bool memcached_continue(memcached_return_t rc)

bool memcached_failed(memcached_return_t rc)

bool memcached_fatal(memcached_return_t rc)

typedef enum memcached_return_t memcached_return_t

enum memcached_return_t
  enumerator MEMCACHED_AUTH_CONTINUE

    Authentication has been paused.

  enumerator MEMCACHED_AUTH_FAILURE

    The credentials provided are not valid for this server.

  enumerator MEMCACHED_AUTH_PROBLEM

    An unknown issue has occurred during authentication.

  enumerator MEMCACHED_BAD_KEY_PROVIDED

    The key provided is not a valid key.

  enumerator MEMCACHED_BUFFERED

    The request has been buffered.

  enumerator MEMCACHED_CLIENT_ERROR

    An unknown client error has occurred internally.

  enumerator MEMCACHED_CONNECTION_BIND_FAILURE

    Deprecated since version <0.30.

    We were not able to bind() to the socket.

  enumerator MEMCACHED_CONNECTION_FAILURE

    A unknown error has occurred while trying to connect to a server.

  enumerator MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE

    Deprecated since version <0.30.

    An error has occurred while trying to connect to a server. It is likely that either the number of file descriptors need to be increased or you are out of memory.

  enumerator MEMCACHED_DATA_DOES_NOT_EXIST

    The data requested with the key given was not found.

  enumerator MEMCACHED_DATA_EXISTS

    The data requested with the key given was not found.

  enumerator MEMCACHED_DELETED

    The object requested by the key has been deleted.

  enumerator MEMCACHED_DEPRECATED

    The method that was requested has been deprecated.

  enumerator MEMCACHED_E2BIG

    Item is too large for the server to store.

  enumerator MEMCACHED_END

    The server has completed returning all of the objects requested.

  enumerator MEMCACHED_ERRNO

    An error has occurred in the driver which has set errno.

  enumerator MEMCACHED_FAIL_UNIX_SOCKET

    A connection was not established with the server via a unix domain socket.

  enumerator MEMCACHED_FAILURE

    Deprecated since version <0.30.

    A unknown failure has occurred in the server.

  enumerator MEMCACHED_FETCH_NOTFINISHED

    A request has been made, but the server has not finished the fetch of the last request.

  enumerator MEMCACHED_HOST_LOOKUP_FAILURE

    A DNS failure has occurred.

  enumerator MEMCACHED_INVALID_ARGUMENTS

    The arguments supplied to the given function were not valid.

  enumerator MEMCACHED_INVALID_HOST_PROTOCOL

    The server you are connecting too has an invalid protocol. Most likely you are connecting to an older server that does not speak the binary protocol.

  enumerator MEMCACHED_ITEM

    An item has been fetched (this is an internal error only).

  enumerator MEMCACHED_KEY_TOO_BIG

    The key that has been provided is too large for the given server.

  enumerator MEMCACHED_MAXIMUM_RETURN

    This in an internal only state.

  enumerator MEMCACHED_MEMORY_ALLOCATION_FAILURE

    An error has occurred while trying to allocate memory.

  enumerator MEMCACHED_NO_KEY_PROVIDED

    Deprecated since version <0.30: Use `MEMCACHED_BAD_KEY_PROVIDED` instead.

    No key was provided.

  enumerator MEMCACHED_NO_SERVERS

    No servers have been added to the memcached_st object.

  enumerator MEMCACHED_NOTFOUND

    The object requested was not found.

  enumerator MEMCACHED_NOTSTORED

    The request to store an object failed.

  enumerator MEMCACHED_NOT_SUPPORTED

    The given method is not supported in the server.

  enumerator MEMCACHED_PARSE_ERROR

    An error has occurred while trying to parse the configuration string. You should use memparse to determine what the error was.

  enumerator MEMCACHED_PARSE_USER_ERROR

    An error has occurred in parsing the configuration string.

  enumerator MEMCACHED_PARTIAL_READ

    The read was only partially successful.

  enumerator MEMCACHED_PROTOCOL_ERROR

    An unknown error has occurred in the protocol.

  enumerator MEMCACHED_READ_FAILURE

    A read failure has occurred.

  enumerator MEMCACHED_SERVER_ERROR

    An unknown error has occurred in the server.

  enumerator MEMCACHED_SERVER_MARKED_DEAD

    The requested server has been marked dead.

  enumerator MEMCACHED_SOME_ERRORS

    A multi request has been made, and some undetermined number of errors have occurred.

  enumerator MEMCACHED_STAT

    A "stat" command has been returned in the protocol.

  enumerator MEMCACHED_STORED

    The requested object has been successfully stored on the server.

  enumerator MEMCACHED_SUCCESS

    The request was successfully executed.

  enumerator MEMCACHED_TIMEOUT

    Operation has timed out.

  enumerator MEMCACHED_UNKNOWN_READ_FAILURE

    An unknown read failure only occurs when either there is a bug in the server, or in rare cases where an ethernet nic is reporting dubious information.

  enumerator MEMCACHED_UNKNOWN_STAT_KEY

    The server you are communicating with has a stat key which has not be defined in the protocol.

  enumerator MEMCACHED_VALUE

    A value has been returned from the server (this is an internal condition only).

  enumerator MEMCACHED_WRITE_FAILURE

    An error has occurred while trying to write to a server.

## SEE ALSO

- memcached(1)

- C/C++ Client Library for memcached

- Converting Error Codes to Messages