Gio::SocketConnection Class Reference
Portable Network I/O Functionality

A socket connection. More...

`#include <giomm/socketconnection.h>`

Inheritance diagram for Gio::SocketConnection:
[legend]

## Public Member Functions

| SocketConnection (SocketConnection&& src) noexcept
SocketConnection& | operator= (SocketConnection&& src) noexcept
| ~SocketConnection () noexcept override
GSocketConnection* | gobj ()
| Provides access to the underlying C GObject. More...
const GSocketConnection* | gobj () const
| Provides access to the underlying C GObject. More...
GSocketConnection* | gobj_copy ()
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More...
bool | connect (const Glib::RefPtr< SocketAddress >& address, const Glib::RefPtr< Cancellable >& cancellable)
| Connect connection to the specified remote address. More...
bool | connect (const Glib::RefPtr< SocketAddress >& address)
| A connect() convenience overload. More...
void | connect_async (const Glib::RefPtr< SocketAddress >& address, const SlotAsyncReady& slot, const Glib::RefPtr< Cancellable >& cancellable)
| Asynchronously connect this connection to the specified remote address. More...
void | connect_async (const Glib::RefPtr< SocketAddress >& address, const SlotAsyncReady& slot)
| A non-cancellable version of connect_async(). More...
bool | connect_finish (const Glib::RefPtr< AsyncResult >& result)
| Gets the result of a g_socket_connection_connect_async() call. More...
bool | is_connected () const
| Checks if connection is connected. More...
Glib::RefPtr< Socket > | get_socket ()
| Gets the underlying Socket object of the connection. More...
Glib::RefPtr< const Socket > | get_socket () const
| Gets the underlying Socket object of the connection. More...
Glib::RefPtr< SocketAddress > | get_local_address ()
| Try to get the local address of a socket connection. More...
Glib::RefPtr< const SocketAddress > | get_local_address () const
| Try to get the local address of a socket connection. More...
Glib::RefPtr< SocketAddress > | get_remote_address ()
| Try to get the remote address of a socket connection. More...
Glib::RefPtr< const SocketAddress > | get_remote_address () const
| Try to get the remote address of a socket connection. More...
Glib::PropertyProxy_ReadOnly< Glib::RefPtr< Socket > > | property_socket () const
| The underlying GSocket. More...
Public Member Functions inherited from Gio::IOStream
| IOStream (IOStream&& src) noexcept
IOStream& | operator= (IOStream&& src) noexcept
| ~IOStream () noexcept override
GIOStream* | gobj ()
| Provides access to the underlying C GObject. More...
const GIOStream* | gobj () const
| Provides access to the underlying C GObject. More...
GIOStream* | gobj_copy ()
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More...
void | splice_async (const Glib::RefPtr< IOStream >& stream2, const SlotAsyncReady& slot, const Glib::RefPtr< Cancellable >& cancellable, IOStreamSpliceFlags flags=Gio::IO_STREAM_SPLICE_NONE, int io_priority=Glib::PRIORITY_DEFAULT)
| Asyncronously splice the output stream to the input stream of stream2, and splice the output stream of stream2 to the input stream of this stream. More...
void | splice_async (const Glib::RefPtr< IOStream >& stream2, const SlotAsyncReady& slot, IOStreamSpliceFlags flags=Gio::IO_STREAM_SPLICE_NONE, int io_priority=Glib::PRIORITY_DEFAULT)
| A non-cancellable version of splice_async(). More...
Glib::RefPtr< InputStream > | get_input_stream ()
| Gets the input stream for this object. More...
Glib::RefPtr< OutputStream > | get_output_stream ()
| Gets the output stream for this object. More...
bool | close (const Glib::RefPtr< Cancellable >& cancellable)
| Closes the stream, releasing resources related to it. More...
bool | close ()
| A close() convenience overload. More...
void | close_async (const SlotAsyncReady& slot, const Glib::RefPtr< Cancellable >& cancellable, int io_priority=Glib::PRIORITY_DEFAULT)
void | close_async (const SlotAsyncReady& slot, int io_priority=Glib::PRIORITY_DEFAULT)
bool | close_finish (const Glib::RefPtr< AsyncResult >& result)
| Closes a stream. More...
bool | is_closed () const
| Checks if a stream is closed. More...
bool | has_pending () const
| Checks if a stream has pending actions. More...
bool | set_pending ()
| Sets stream to have actions pending. More...
void | clear_pending ()
| Clears the pending flag on stream. More...
Public Member Functions inherited from Glib::Object
| Object (const Object&)=delete
Object& | operator= (const Object&)=delete
| Object (Object&& src) noexcept
Object& | operator= (Object&& src) noexcept
void* | get_data (const QueryQuark& key)
void | set_data (const Quark& key, void* data)
void | set_data (const Quark& key, void* data, DestroyNotify notify)
void | remove_data (const QueryQuark& quark)
void* | steal_data (const QueryQuark& quark)
Public Member Functions inherited from Glib::ObjectBase
| ObjectBase (const ObjectBase&)=delete
ObjectBase& | operator= (const ObjectBase&)=delete
void | set_property_value (const Glib::ustring& property_name, const Glib::ValueBase& value)
| You probably want to use a specific property_*() accessor method instead. More...
void | get_property_value (const Glib::ustring& property_name, Glib::ValueBase& value) const
| You probably want to use a specific property_*() accessor method instead. More...
template<class PropertyType >
void | set_property (const Glib::ustring& property_name, const PropertyType& value)
| You probably want to use a specific property_*() accessor method instead. More...
template<class PropertyType >
void | get_property (const Glib::ustring& property_name, PropertyType& value) const
| You probably want to use a specific property_*() accessor method instead. More...
void | connect_property_changed (const Glib::ustring& property_name, const sigc::slot< void >& slot)
| You can use the signal_changed() signal of the property proxy instead. More...
void | connect_property_changed (const Glib::ustring& property_name, sigc::slot< void >&& slot)
| You can use the signal_changed() signal of the property proxy instead. More...
sigc::connection | connect_property_changed_with_return (const Glib::ustring& property_name, const sigc::slot< void >& slot)
| You can use the signal_changed() signal of the property proxy instead. More...
sigc::connection | connect_property_changed_with_return (const Glib::ustring& property_name, sigc::slot< void >&& slot)
| You can use the signal_changed() signal of the property proxy instead. More...
void | freeze_notify ()
| Increases the freeze count on object. More...
void | thaw_notify ()
| Reverts the effect of a previous call to freeze_notify(). More...
virtual void | reference () const
| Increment the reference count for this object. More...
virtual void | unreference () const
| Decrement the reference count for this object. More...
GObject* | gobj ()
| Provides access to the underlying C GObject. More...
const GObject* | gobj () const
| Provides access to the underlying C GObject. More...
GObject* | gobj_copy () const
| Give a ref-ed copy to someone. Use for direct struct access. More...
Public Member Functions inherited from sigc::trackable
| trackable () noexcept
| trackable (const trackable &src) noexcept
| trackable (trackable &&src)
| ~trackable ()
void | add_destroy_notify_callback (void *data, func_destroy_notify func) const
void | notify_callbacks ()
trackable & | operator= (const trackable &src)
trackable & | operator= (trackable &&src)
void | remove_destroy_notify_callback (void *data) const

## Static Public Member Functions

static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system. More...
static Glib::RefPtr< SocketConnection > | create (const Glib::RefPtr< Socket >& socket)
| Creates a SocketConnection subclass of the right type for socket. More...
Static Public Member Functions inherited from Gio::IOStream
static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system. More...
static bool | splice_finish (const Glib::RefPtr< AsyncResult >& result)
| Finishes an asynchronous io stream splice operation. More...

## Related Functions

(Note that these are not member functions.)
Glib::RefPtr< Gio::SocketConnection > | wrap (GSocketConnection* object, bool take_copy=false)
| A Glib::wrap() method for this object. More...
Related Functions inherited from Gio::IOStream
Glib::RefPtr< Gio::IOStream > | wrap (GIOStream* object, bool take_copy=false)
| A Glib::wrap() method for this object. More...
Related Functions inherited from Glib::Object
Glib::RefPtr< Glib::Object > | wrap (GObject* object, bool take_copy=false)

## Additional Inherited Members

Public Types inherited from Glib::Object
using | DestroyNotify = void(*)(gpointer data)
Public Types inherited from sigc::trackable
typedef internal::func_destroy_notify | func_destroy_notify
Protected Member Functions inherited from Glib::Object
| Object ()
| Object (const Glib::ConstructParams& construct_params)
| Object (GObject* castitem)
| ~Object () noexcept override
Protected Member Functions inherited from Glib::ObjectBase
| ObjectBase ()
| This default constructor is called implicitly from the constructor of user-derived classes, even if, for instance, Gtk::Button calls a different ObjectBase constructor. More...
| ObjectBase (const char* custom_type_name)
| A derived constructor always overrides this choice. More...
| ObjectBase (const std::type_info& custom_type_info)
| This constructor is a special feature to allow creation of derived types on the fly, without having to use g_object_new() manually. More...
| ObjectBase (ObjectBase&& src) noexcept
ObjectBase& | operator= (ObjectBase&& src) noexcept
virtual | ~ObjectBase () noexcept=0
void | initialize (GObject* castitem)
void | initialize_move (GObject* castitem, Glib::ObjectBase* previous_wrapper)

## Detailed Description

A socket connection.

See also
  IOStream, SocketClient, SocketListener

SocketConnection is a IOStream for a connected socket. They can be created either by SocketClient when connecting to a host, or by SocketListener when accepting a new client.

The type of the SocketConnection object returned from these calls depends on the type of the underlying socket that is in use. For instance, for a TCP/IP connection it will be a TcpConnection.

Chosing what type of object to construct is done with the socket connection factory, and it is possible for 3rd parties to register custom socket connection types for specific combination of socket family/type/protocol using g_socket_connection_factory_register_type().

Since glibmm 2.24:

## Constructor & Destructor Documentation

Gio::SocketConnection::SocketConnection | ( | SocketConnection&& | src | ) |

noexcept

Gio::SocketConnection::~SocketConnection | ( |  | ) |

override noexcept

## Member Function Documentation

bool Gio::SocketConnection::connect | ( | const Glib::RefPtr< SocketAddress >& | address,
|  | const Glib::RefPtr< Cancellable >& | cancellable
| ) |  |

Connect connection to the specified remote address.

Since glibmm 2.32:

Parameters

  address | A SocketAddress specifying the remote address.
  cancellable | A Cancellable or `nullptr`.

Returns
  `true` if the connection succeeded, `false` on error.

Exceptions

  Glib::Error |

bool Gio::SocketConnection::connect | ( | const Glib::RefPtr< SocketAddress >& | address | ) |

A connect() convenience overload.

void Gio::SocketConnection::connect_async | ( | const Glib::RefPtr< SocketAddress >& | address,
|  | const SlotAsyncReady& | slot,
|  | const Glib::RefPtr< Cancellable >& | cancellable
| ) |  |

Asynchronously connect this connection to the specified remote address.

This clears the "blocking" flag on this connection's underlying socket if it is currently set.

Use connect_finish() to retrieve the result.

Parameters

  address | A SocketAddress specifying the remote address.
  slot | A SlotAsyncReady slot.
  cancellable | A Cancellable.

Since glibmm 2.36:

void Gio::SocketConnection::connect_async | ( | const Glib::RefPtr< SocketAddress >& | address,
|  | const SlotAsyncReady& | slot
| ) |  |

A non-cancellable version of connect_async().

bool Gio::SocketConnection::connect_finish | ( | const Glib::RefPtr< AsyncResult >& | result | ) |

Gets the result of a g_socket_connection_connect_async() call.

Since glibmm 2.32:

Parameters

  result | The AsyncResult.

Returns
  `true` if the connection succeeded, `false` on error.

Exceptions

  Glib::Error |

static Glib::RefPtr<SocketConnection> Gio::SocketConnection::create | ( | const Glib::RefPtr< Socket >& | socket | ) |

static

Creates a SocketConnection subclass of the right type for socket.

Since glibmm 2.22:

Parameters

  socket | A Socket.

Returns
  A SocketConnection.

Glib::RefPtr<SocketAddress> Gio::SocketConnection::get_local_address | ( |  | ) |

Try to get the local address of a socket connection.

Since glibmm 2.22:

Returns
  A SocketAddress or `nullptr` on error. Free the returned object with Glib::object_unref().

Exceptions

  Glib::Error |

Glib::RefPtr<const SocketAddress> Gio::SocketConnection::get_local_address | ( |  | ) | const

Try to get the local address of a socket connection.

Since glibmm 2.22:

Returns
  A SocketAddress or `nullptr` on error. Free the returned object with Glib::object_unref().

Exceptions

  Glib::Error |

Glib::RefPtr<SocketAddress> Gio::SocketConnection::get_remote_address | ( |  | ) |

Try to get the remote address of a socket connection.

Since GLib 2.40, when used with g_socket_client_connect() or g_socket_client_connect_async(), during emission of SOCKET_CLIENT_CONNECTING, this function will return the remote address that will be used for the connection. This allows applications to print e.g. "Connecting to example.com (10.42.77.3)...".

Since glibmm 2.22:

Returns
  A SocketAddress or `nullptr` on error. Free the returned object with Glib::object_unref().

Exceptions

  Glib::Error |

Glib::RefPtr<const SocketAddress> Gio::SocketConnection::get_remote_address | ( |  | ) | const

Try to get the remote address of a socket connection.

Since GLib 2.40, when used with g_socket_client_connect() or g_socket_client_connect_async(), during emission of SOCKET_CLIENT_CONNECTING, this function will return the remote address that will be used for the connection. This allows applications to print e.g. "Connecting to example.com (10.42.77.3)...".

Since glibmm 2.22:

Returns
  A SocketAddress or `nullptr` on error. Free the returned object with Glib::object_unref().

Exceptions

  Glib::Error |

Glib::RefPtr<Socket> Gio::SocketConnection::get_socket | ( |  | ) |

Gets the underlying Socket object of the connection.

This can be useful if you want to do something unusual on it not supported by the SocketConnection APIs.

Since glibmm 2.22:

Returns
  A Socket or `nullptr` on error.

Glib::RefPtr<const Socket> Gio::SocketConnection::get_socket | ( |  | ) | const

Gets the underlying Socket object of the connection.

This can be useful if you want to do something unusual on it not supported by the SocketConnection APIs.

Since glibmm 2.22:

Returns
  A Socket or `nullptr` on error.

static GType Gio::SocketConnection::get_type | ( |  | ) |

static

Get the GType for this class, for use with the underlying GObject type system.

GSocketConnection* Gio::SocketConnection::gobj | ( |  | ) |

inline

Provides access to the underlying C GObject.

const GSocketConnection* Gio::SocketConnection::gobj | ( |  | ) | const

inline

Provides access to the underlying C GObject.

GSocketConnection* Gio::SocketConnection::gobj_copy | ( |  | ) |

Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

bool Gio::SocketConnection::is_connected | ( |  | ) | const

Checks if connection is connected.

This is equivalent to calling g_socket_is_connected() on connection's underlying Socket.

Since glibmm 2.32:

Returns
  Whether connection is connected.

SocketConnection& Gio::SocketConnection::operator= | ( | SocketConnection&& | src | ) |

noexcept

Glib::PropertyProxy_ReadOnly< Glib::RefPtr<Socket> > Gio::SocketConnection::property_socket | ( |  | ) | const

The underlying GSocket.

Returns
  A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

## Friends And Related Function Documentation

Glib::RefPtr< Gio::SocketConnection > wrap | ( | GSocketConnection * | object,
|  | bool | take_copy = `false`
| ) |  |

related

A Glib::wrap() method for this object.

Parameters

  object | The C instance.
  take_copy | False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns
  A C++ instance that wraps this C instance.