LibreOffice: osl::Socket Class Reference

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osl::Socket Class Reference

`#include <socket_decl.hxx>`

Inheritance diagram for osl::Socket:

## Public Member Functions
| Socket ()
| Socket (const Socket &socket)
| Socket (oslSocket socketHandle)
| Socket (oslSocket socketHandle, __sal_NoAcquire noacquire)
| The instance takes over the handle's ownership without acquiring the handle, but releases it within the dtor.
| ~Socket ()
| Destructor.
Socket & | operator= (oslSocket socketHandle)
| Assignment operator.
Socket & | operator= (const Socket &sock)
| Assignment operator.
bool | operator== (const Socket &rSocket) const
bool | operator== (const oslSocket socketHandle) const
void | shutdown (oslSocketDirection Direction=osl_Socket_DirReadWrite)
| Closes a definite or both directions of the bidirectional stream.
void | close ()
| Closes a socket.
void | getLocalAddr (SocketAddr &Addr) const
| Retrieves the address of the local interface of this socket.
sal_Int32 | getLocalPort () const
| Get the local port of the socket.
inline ::rtl::OUString | getLocalHost () const
| Get the hostname for the local interface.
void | getPeerAddr (SocketAddr &Addr) const
| Retrieves the address of the remote host of this socket.
sal_Int32 | getPeerPort () const
| Get the remote port of the socket.
inline ::rtl::OUString | getPeerHost () const
| Get the hostname for the remote interface.
bool | bind (const SocketAddr &LocalInterface)
| Binds the socket to the specified (local) interface.
bool | isRecvReady (const TimeValue *pTimeout=NULL) const
| Checks if read operations will block.
bool | isSendReady (const TimeValue *pTimeout=NULL) const
| Checks if send operations will block.
bool | isExceptionPending (const TimeValue *pTimeout=NULL) const
| Checks if a request for out-of-band data will block.
oslSocketType | getType () const
| Queries the socket for its type.
sal_Int32 | getOption (oslSocketOption Option, void *pBuffer, sal_uInt32 BufferLen, oslSocketOptionLevel Level=osl_Socket_LevelSocket) const
| Retrieves option-attributes associated with the socket.
bool | setOption (oslSocketOption Option, void *pBuffer, sal_uInt32 BufferLen, oslSocketOptionLevel Level=osl_Socket_LevelSocket) const
| Sets the sockets attributes.
bool | setOption (oslSocketOption option, sal_Int32 nValue)
| Convenience function for setting sal_Bool and sal_Int32 option values.
sal_Int32 | getOption (oslSocketOption option) const
| Convenience function for retrieving sal_Bool and sal_Int32 option values.
bool | enableNonBlockingMode (bool bNonBlockingMode)
| Enables/disables non-blocking mode of the socket.
bool | isNonBlockingMode () const
| Query blocking mode of the socket.
void | clearError () const
| clears the error status
oslSocketError | getError () const
| returns a constant describing the last error for the socket system.
inline ::rtl::OUString | getErrorAsString () const
| Builds a string with the last error-message for the socket.
oslSocket | getHandle () const
| Returns the underlying handle unacquired (The caller must acquire it to keep it).

## Protected Member Functions
| Socket (oslSocketType Type, oslAddrFamily Family=osl_Socket_FamilyInet, oslProtocol Protocol=osl_Socket_ProtocolIp)
| Creates a socket.

## Protected Attributes
oslSocket | m_handle

## Constructor & Destructor Documentation

## ◆ Socket() [1/5]

osl::Socket::Socket | ( | oslSocketType | Type,
|  | oslAddrFamily | Family = osl_Socket_FamilyInet,
|  | oslProtocol | Protocol = osl_Socket_ProtocolIp )
| inlineprotected

Creates a socket.

Note it's protected.

Parameters

  Type |
  Family |
  Protocol |

## ◆ Socket() [2/5]

osl::Socket::Socket | ( |  | ) |
| inline

## ◆ Socket() [3/5]

osl::Socket::Socket | ( | const Socket & | socket | ) |
| inline

## ◆ Socket() [4/5]

osl::Socket::Socket | ( | oslSocket | socketHandle | ) |
| inline

## ◆ Socket() [5/5]

osl::Socket::Socket | ( | oslSocket | socketHandle,
|  | __sal_NoAcquire | noacquire )
| inline

The instance takes over the handle's ownership without acquiring the handle, but releases it within the dtor.

Parameters

  socketHandle | the handle
  noacquire | use SAL_NO_ACQUIRE

## ◆ ~Socket()

osl::Socket::~Socket | ( |  | ) |
| inline

Destructor.

Releases the underlying handle

## Member Function Documentation

## ◆ bind()

bool osl::Socket::bind | ( | const SocketAddr & | LocalInterface | ) |
| inline

Binds the socket to the specified (local) interface.

Parameters

  LocalInterface | Address of the Interface

Returns
  True if bind was successful.

## ◆ clearError()

void osl::Socket::clearError | ( |  | ) | const
| inline

clears the error status

## ◆ close()

void osl::Socket::close | ( |  | ) |
| inline

Closes a socket.

Note that closing a socket is identical to shutdown( osl_Socket_DirReadWrite ), as the operating system distinguish both cases, both functions or offered in this API.

See also
  osl_closeSocket()

## ◆ enableNonBlockingMode()

bool osl::Socket::enableNonBlockingMode | ( | bool | bNonBlockingMode | ) |
| inline

Enables/disables non-blocking mode of the socket.

Parameters

  bNonBlockingMode | If `true`, blocking mode will be switched off If `false`, the socket will become a blocking socket (which is the default behaviour of a socket).

Returns
  `true` if mode could be set.

## ◆ getError()

oslSocketError osl::Socket::getError | ( |  | ) | const
| inline

returns a constant describing the last error for the socket system.

Returns
  osl_Socket_E_NONE if no error occurred, invalid_SocketError if an unknown (unmapped) error occurred, otherwise an enum describing the error.

See also
  osl_getLastSocketError()

## ◆ getErrorAsString()

rtl::OUString osl::Socket::getErrorAsString | ( |  | ) | const
| inline

Builds a string with the last error-message for the socket.

## ◆ getHandle()

oslSocket osl::Socket::getHandle | ( |  | ) | const
| inline

Returns the underlying handle unacquired (The caller must acquire it to keep it).

## ◆ getLocalAddr()

void osl::Socket::getLocalAddr | ( | SocketAddr & | Addr | ) | const
| inline

Retrieves the address of the local interface of this socket.

Parameters

  Addr | [out] receives the address.

See also
  osl_getLocalAddrOfSocket()

## ◆ getLocalHost()

rtl::OUString osl::Socket::getLocalHost | ( |  | ) | const
| inline

Get the hostname for the local interface.

Returns
  the hostname or an empty string ("").

## ◆ getLocalPort()

sal_Int32 osl::Socket::getLocalPort | ( |  | ) | const
| inline

Get the local port of the socket.

Usually used after bind().

Returns
  the port number or OSL_INVALID_PORT on errors.

## ◆ getOption() [1/2]

sal_Int32 osl::Socket::getOption | ( | oslSocketOption | option | ) | const
| inline

Convenience function for retrieving sal_Bool and sal_Int32 option values.

See also
  setOption()

## ◆ getOption() [2/2]

sal_Int32 osl::Socket::getOption | ( | oslSocketOption | Option,
|  | void * | pBuffer,
|  | sal_uInt32 | BufferLen,
|  | oslSocketOptionLevel | Level = osl_Socket_LevelSocket ) const
| inline

Retrieves option-attributes associated with the socket.

Parameters

  Option | The attribute to query. Valid values (depending on the Level) are: `osl_Socket_Option_Debug` (sal_Bool) Socket debug flag 1 = enabled, 0 = disabled. `osl_Socket_OptionAcceptConn` `osl_Socket_OptionReuseAddr` (sal_Bool) Allows the socket to be bound to an address that is already in use. 1 = multiple bound allowed, 0 = no multiple bounds allowed `osl_Socket_OptionKeepAlive` (sal_Bool) Keepalive packets are sent by the underlying socket. 1 = enabled, 0 = disabled `osl_Socket_OptionDontRoute` (sal_Bool) Do not route: send directly to interface. 1 = do not route , 0 = routing possible `osl_Socket_OptionBroadcast` (sal_Bool) Transmission of broadcast messages are allowed on the socket. 1 = transmission allowed, 0 = transmission disallowed `osl_Socket_OptionUseLoopback` `osl_Socket_OptionLinger` (linger) Linger on close if unsent data is present. linger has two members: l_onoff, l_linger l_onoff = 0 is off, l_onoff > 0 and l_linger= timeout in seconds. `osl_Socket_OptionOOBinLine` `osl_Socket_OptionSndBuf` (sal_Int32) Size of the send buffer in bytes. Data is sent after SndTimeo or when the buffer is full. This allows faster writing to the socket. `osl_Socket_OptionRcvBuf` (sal_Int32) Size of the receive buffer in bytes. Data is sent after SndTimeo or when the buffer is full. This allows faster writing to the socket and larger packet sizes. `osl_Socket_OptionSndLowat` `osl_Socket_OptionRcvLowat` `osl_Socket_OptionSndTimeo` (sal_Int32) Data is sent after this timeout. This allows gathering of data to send larger packages but increases latency times. `osl_Socket_OptionRcvTimeo` `osl_Socket_OptionError` `osl_Socket_OptionType` `osl_Socket_OptionTcpNoDelay` Disables the Nagle algorithm for send coalescing. (Do not collect data until a packet is full, instead send immediately. This increases network traffic but might improve latency-times.) 1 = disables the algorithm, 0 = keeps it enabled.

If not above mentioned otherwise, the options are only valid for level `osl_Socket_LevelSocket`.

Parameters

  pBuffer | The Buffer will be filled with the attribute.
  BufferLen | The size of pBuffer.
  Level | The option level.

Valid values are:

- `osl_Socket_LevelSocket` : Socket Level
- `osl_Socket_LevelTcp` : Level of Transmission Control Protocol

Returns
  The size of the attribute copied into pBuffer or -1 if an error occurred.

## ◆ getPeerAddr()

void osl::Socket::getPeerAddr | ( | SocketAddr & | Addr | ) | const
| inline

Retrieves the address of the remote host of this socket.

Parameters

  Addr | [out] receives the address.

## ◆ getPeerHost()

rtl::OUString osl::Socket::getPeerHost | ( |  | ) | const
| inline

Get the hostname for the remote interface.

Returns
  the hostname or an empty string ("").

## ◆ getPeerPort()

sal_Int32 osl::Socket::getPeerPort | ( |  | ) | const
| inline

Get the remote port of the socket.

Returns
  the port number or OSL_INVALID_PORT on errors.

## ◆ getType()

oslSocketType osl::Socket::getType | ( |  | ) | const
| inline

Queries the socket for its type.

Return values

  osl_Socket_TypeStream |
  osl_Socket_TypeDgram |
  osl_Socket_TypeRaw |
  osl_Socket_TypeRdm |
  osl_Socket_TypeSeqPacket |
  osl_invalid_SocketType | if an error occurred

## ◆ isExceptionPending()

bool osl::Socket::isExceptionPending | ( | const TimeValue * | pTimeout = NULL | ) | const
| inline

Checks if a request for out-of-band data will block.

You can specify a timeout-value in seconds/nanoseconds that denotes how the operation will block if the Socket has no pending OOB data.

Returns
  `true` if OOB-request operations (recv with appropriate flags) on the Socket will NOT block; `false` if it would block or if an error occurred.

Parameters

  pTimeout | if 0, the operation will block without a timeout. Otherwise the specified amount of time.

## ◆ isNonBlockingMode()

bool osl::Socket::isNonBlockingMode | ( |  | ) | const
| inline

Query blocking mode of the socket.

Returns
  `true` if non-blocking mode is set.

## ◆ isRecvReady()

bool osl::Socket::isRecvReady | ( | const TimeValue * | pTimeout = NULL | ) | const
| inline

Checks if read operations will block.

You can specify a timeout-value in seconds/nanoseconds that denotes how the operation will block if the Socket is not ready.

Returns
  `true` if read operations (recv, recvFrom, accept) on the Socket will NOT block; `false` if it would block or if an error occurred.

Parameters

  pTimeout | if 0, the operation will block without a timeout. Otherwise the specified amount of time.

## ◆ isSendReady()

bool osl::Socket::isSendReady | ( | const TimeValue * | pTimeout = NULL | ) | const
| inline

Checks if send operations will block.

You can specify a timeout-value in seconds/nanoseconds that denotes how the operation will block if the Socket is not ready.

Returns
  `true` if send operations (send, sendTo) on the Socket will NOT block; `false` if it would block or if an error occurred.

Parameters

  pTimeout | if 0, the operation will block without a timeout. Otherwise the specified amount of time.

## ◆ operator=() [1/2]

Socket & osl::Socket::operator= | ( | const Socket & | sock | ) |
| inline

Assignment operator.

If socket was already created, the old one will be discarded.

## ◆ operator=() [2/2]

Socket & osl::Socket::operator= | ( | oslSocket | socketHandle | ) |
| inline

Assignment operator.

If socket was already created, the old one will be discarded.

## ◆ operator==() [1/2]

bool osl::Socket::operator== | ( | const oslSocket | socketHandle | ) | const
| inline

Returns
  `true`, when the underlying handle of both Socket instances are identical, `false` otherwise.

## ◆ operator==() [2/2]

bool osl::Socket::operator== | ( | const Socket & | rSocket | ) | const
| inline

Returns
  `true`, when the underlying handle of both Socket instances are identical, `false` otherwise.

## ◆ setOption() [1/2]

bool osl::Socket::setOption | ( | oslSocketOption | option,
|  | sal_Int32 | nValue )
| inline

Convenience function for setting sal_Bool and sal_Int32 option values.

See also
  setOption()

## ◆ setOption() [2/2]

bool osl::Socket::setOption | ( | oslSocketOption | Option,
|  | void * | pBuffer,
|  | sal_uInt32 | BufferLen,
|  | oslSocketOptionLevel | Level = osl_Socket_LevelSocket ) const
| inline

Sets the sockets attributes.

Parameters

  Option | denotes the option to modify. Valid values (depending on the Level) are: osl_Socket_Option_Debug osl_Socket_OptionAcceptConn osl_Socket_OptionReuseAddr osl_Socket_OptionKeepAlive osl_Socket_OptionDontRoute osl_Socket_OptionBroadcast osl_Socket_OptionUseLoopback osl_Socket_OptionLinger osl_Socket_OptionOOBinLine osl_Socket_OptionSndBuf osl_Socket_OptionRcvBuf osl_Socket_OptionSndLowat osl_Socket_OptionRcvLowat osl_Socket_OptionSndTimeo osl_Socket_OptionRcvTimeo osl_Socket_OptionError osl_Socket_OptionType osl_Socket_OptionTcpNoDelay

If not above mentioned otherwise, the options are only valid for level osl_Socket_LevelSocket.

Parameters

  pBuffer | Pointer to a Buffer which contains the attribute-value.
  BufferLen | contains the length of the Buffer.
  Level | selects the level for which an option should be changed. Valid values are: osl_Socket_evel_Socket : Socket Level osl_Socket_Level_Tcp : Level of Transmission Control Protocol

Returns
  True if the option could be changed.

## ◆ shutdown()

void osl::Socket::shutdown | ( | oslSocketDirection | Direction = osl_Socket_DirReadWrite | ) |
| inline

Closes a definite or both directions of the bidirectional stream.

Parameters

  Direction |

See also
  osl_shutdownSocket()

## Member Data Documentation

## ◆ m_handle

oslSocket osl::Socket::m_handle
| protected

The documentation for this class was generated from the following files:

- osl/socket_decl.hxx
- osl/socket.hxx