Class

GioSocketControlMessage

Description [src]

abstract class Gio.SocketControlMessage : GObject.Object {
  parent_instance: GObject,
  priv: GSocketControlMessagePrivate*
}

A GSocketControlMessage is a special-purpose utility message that can be sent to or received from a GSocket. These types of messages are often called “ancillary data”.

The message can represent some sort of special instruction to or information from the socket or can represent a special kind of transfer to the peer (for example, sending a file descriptor over a UNIX socket).

These messages are sent with g_socket_send_message() and received with g_socket_receive_message().

To extend the set of control message that can be sent, subclass this class and override the get_size, get_level, get_type and serialize methods.

To extend the set of control messages that can be received, subclass this class and implement the deserialize method. Also, make sure your class is registered with the GType typesystem before calling g_socket_receive_message() to read such a message.

Available since:2.22

Hierarchy

hierarchy this GSocketControlMessage ancestor_0 GObject ancestor_0--this

Ancestors

Functions

g_socket_control_message_deserialize

Tries to deserialize a socket control message of a given level and type. This will ask all known (to GType) subclasses of GSocketControlMessage if they can understand this kind of message and if so deserialize it into a GSocketControlMessage.

Available since: 2.22

Instance methods

g_socket_control_message_get_level

Returns the “level” (i.e. the originating protocol) of the control message. This is often SOL_SOCKET.

Available since: 2.22

g_socket_control_message_get_msg_type

Returns the protocol specific type of the control message. For instance, for UNIX fd passing this would be SCM_RIGHTS.

Available since: 2.22

g_socket_control_message_get_size

Returns the space required for the control message, not including headers or alignment.

Available since: 2.22

g_socket_control_message_serialize

Converts the data in the message to bytes placed in the message.

Available since: 2.22

Methods inherited from GObject (43)

Signals

Signals inherited from GObject (1)

Class structure

struct GioSocketControlMessageClass {
  GObjectClass parent_class;
  gsize (* get_size) (
    GSocketControlMessage* message
  );
  int (* get_level) (
    GSocketControlMessage* message
  );
  int (* get_type) (
    GSocketControlMessage* message
  );
  void (* serialize) (
    GSocketControlMessage* message,
    gpointer data
  );
  GSocketControlMessage* (* deserialize) (
    int level,
    int type,
    gsize size,
    gpointer data
  );
  void (* _g_reserved1) (
void
  );
  void (* _g_reserved2) (
void
  );
  void (* _g_reserved3) (
void
  );
  void (* _g_reserved4) (
void
  );
  void (* _g_reserved5) (
void
  );
  
}
Class members
parent_class
GObjectClass
  No description available.
get_size
gsize (* get_size) (
    GSocketControlMessage* message
  )
  No description available.
get_level
int (* get_level) (
    GSocketControlMessage* message
  )
  No description available.
get_type
int (* get_type) (
    GSocketControlMessage* message
  )
  No description available.
serialize
void (* serialize) (
    GSocketControlMessage* message,
    gpointer data
  )
  No description available.
deserialize
GSocketControlMessage* (* deserialize) (
    int level,
    int type,
    gsize size,
    gpointer data
  )
  No description available.
_g_reserved1
void (* _g_reserved1) (
void
  )
  No description available.
_g_reserved2
void (* _g_reserved2) (
void
  )
  No description available.
_g_reserved3
void (* _g_reserved3) (
void
  )
  No description available.
_g_reserved4
void (* _g_reserved4) (
void
  )
  No description available.
_g_reserved5
void (* _g_reserved5) (
void
  )
  No description available.

Virtual methods

Gio.SocketControlMessageClass.get_level

Returns the “level” (i.e. the originating protocol) of the control message. This is often SOL_SOCKET.

Available since: 2.22

Gio.SocketControlMessageClass.get_size

Returns the space required for the control message, not including headers or alignment.

Available since: 2.22

Gio.SocketControlMessageClass.get_type
No description available.
Gio.SocketControlMessageClass.serialize

Converts the data in the message to bytes placed in the message.

Available since: 2.22