Database.Memcache.Socket

Handles a single Memcached connection, sending and receiving requests.

Types

data Socket :: *

Represents a socket. The fields are, respectively:

• File descriptor
• Socket family
• Socket type
• Protocol number
• Status flag

If you are calling the MkSocket constructor directly you should ensure you have called withSocketsDo.

Instances

Eq Socket

Methods

(==) :: Socket -> Socket -> Bool

(/=) :: Socket -> Socket -> Bool

Show Socket

Methods

showsPrec :: Int -> Socket -> ShowS

show :: Socket -> String

showList :: [Socket] -> ShowS

data Request

Constructors

Req

Fields

• reqOp :: OpRequest
• reqOpaque :: Word32
• reqCas :: Version

Instances

Eq Request

Methods

(==) :: Request -> Request -> Bool

(/=) :: Request -> Request -> Bool

Show Request

Methods

showsPrec :: Int -> Request -> ShowS

show :: Request -> String

showList :: [Request] -> ShowS

data Response

Memcached response packet.

Constructors

Res

Fields

• resOp :: OpResponse
• resStatus :: Status
• resOpaque :: Word32
• resCas :: Version

Instances

Eq Response

Methods

(==) :: Response -> Response -> Bool

(/=) :: Response -> Response -> Bool

Show Response

Methods

showsPrec :: Int -> Response -> ShowS

show :: Response -> String

showList :: [Response] -> ShowS

Operations

send :: Socket -> Request -> IO ()

Send a request to the Memcached server.

recv :: Socket -> IO Response

Retrieve a single response from the Memcached server. FIXME: read into buffer to minimize read syscalls

Serialization / Deserialization

szRequest :: Request -> Builder

Serialize a request to a ByteString Builder.

szResponse :: Response -> Builder

Serialize a response to a ByteString Builder.

dzHeader :: PktType -> Get Header

Deserialize a Header from a ByteString.

dzResponse :: Header -> ByteString -> Response

Deserialize a Response body.