sf::Socket Class Reference

Base class for all the socket types. More...

#include <Socket.hpp>

Inheritance diagram for sf::Socket:

Public Types
enum	Status {   Done,   NotReady,   Disconnected,   Error }
	Status codes that may be returned by socket functions. More...
enum	{ AnyPort = 0 }
	Some special values used by sockets. More...

Public Member Functions
virtual	~Socket ()
	Destructor. More...
void	setBlocking (bool blocking)
	Set the blocking state of the socket. More...
bool	isBlocking () const
	Tell whether the socket is in blocking or non-blocking mode. More...

Protected Types
enum	Type {   Tcp,   Udp }
	Types of protocols that the socket can use. More...

Protected Member Functions
	Socket (Type type)
	Default constructor. More...
SocketHandle	getHandle () const
	Return the internal handle of the socket. More...
void	create ()
	Create the internal representation of the socket. More...
void	create (SocketHandle handle)
	Create the internal representation of the socket from a socket handle. More...
void	close ()
	Close the socket gracefully. More...

Friends
class	SocketSelector

Detailed Description

Base class for all the socket types.

This class mainly defines internal stuff to be used by derived classes.

The only public features that it defines, and which is therefore common to all the socket classes, is the blocking state. All sockets can be set as blocking or non-blocking.

In blocking mode, socket functions will hang until the operation completes, which means that the entire program (well, in fact the current thread if you use multiple ones) will be stuck waiting for your socket operation to complete.

In non-blocking mode, all the socket functions will return immediately. If the socket is not ready to complete the requested operation, the function simply returns the proper status code (Socket::NotReady).

The default mode, which is blocking, is the one that is generally used, in combination with threads or selectors. The non-blocking mode is rather used in real-time applications that run an endless loop that can poll the socket often enough, and cannot afford blocking this loop.

See also

sf::TcpListener, sf::TcpSocket, sf::UdpSocket

Definition at line 45 of file Socket.hpp.

Member Enumeration Documentation

anonymous enum

Some special values used by sockets.

Enumerator
AnyPort	Special value that tells the system to pick any available port.

Definition at line 65 of file Socket.hpp.

enum sf::Socket::Status

Status codes that may be returned by socket functions.

Enumerator
Done	The socket has sent / received the data.
NotReady	The socket is not ready to send / receive data yet.
Disconnected	The TCP socket has been disconnected.
Error	An unexpected error happened.

Definition at line 53 of file Socket.hpp.

enum sf::Socket::Type

protected

Types of protocols that the socket can use.

Enumerator
Tcp	TCP protocol.
Udp	UDP protocol.

Definition at line 113 of file Socket.hpp.

Constructor & Destructor Documentation

virtual sf::Socket::~Socket ( )

virtual

Destructor.

sf::Socket::Socket ( Type  type )

protected

Default constructor.

This constructor can only be accessed by derived classes.

Parameters

type	Type of the socket (TCP or UDP)

Member Function Documentation

void sf::Socket::close ( )

protected

Close the socket gracefully.

This function can only be accessed by derived classes.

void sf::Socket::create ( )

protected

Create the internal representation of the socket.

This function can only be accessed by derived classes.

void sf::Socket::create ( SocketHandle  handle )

protected

Create the internal representation of the socket from a socket handle.

This function can only be accessed by derived classes.

Parameters

handle

OS-specific handle of the socket to wrap

SocketHandle sf::Socket::getHandle ( ) const

protected

Return the internal handle of the socket.

The returned handle may be invalid if the socket was not created yet (or already destroyed). This function can only be accessed by derived classes.

Returns

The internal (OS-specific) handle of the socket

bool sf::Socket::isBlocking

(

)

const

Tell whether the socket is in blocking or non-blocking mode.

Returns

True if the socket is blocking, false otherwise

See also

setBlocking

void sf::Socket::setBlocking

(

bool

blocking

)

Set the blocking state of the socket.

In blocking mode, calls will not return until they have completed their task. For example, a call to Receive in blocking mode won't return until some data was actually received. In non-blocking mode, calls will always return immediately, using the return code to signal whether there was data available or not. By default, all sockets are blocking.

Parameters

blocking

True to set the socket as blocking, false for non-blocking

See also

isBlocking

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

• Socket.hpp