GSocketClient

typedef struct _GSocketClient GSocketClient;

A helper class for network servers to listen for and accept connections.

Since 2.22

g_socket_client_new ()

GSocketClient *     g_socket_client_new                 (void);

Creates a new GSocketClient with the default options.

Since 2.22

g_socket_client_connect ()

GSocketConnection * g_socket_client_connect             (GSocketClient *client,
                                                         GSocketConnectable *connectable,
                                                         GCancellable *cancellable,
                                                         GError **error);

Tries to resolve the connectable and make a network connection to it..

Upon a successful connection, a new GSocketConnection is constructed and returned. The caller owns this new object and must drop their reference to it when finished with it.

The type of the GSocketConnection object returned depends on the type of the underlying socket that is used. For instance, for a TCP/IP connection it will be a GTcpConnection.

The socket created will be the same family as the the address that the connectable resolves to, unless family is set with g_socket_client_set_family() or indirectly via g_socket_client_set_local_address(). The socket type defaults to G_SOCKET_TYPE_STREAM but can be set with g_socket_client_set_socket_type().

If a local address is specified with g_socket_client_set_local_address() the socket will be bound to this address before connecting.

Since 2.22

g_socket_client_connect_async ()

void                g_socket_client_connect_async       (GSocketClient *client,
                                                         GSocketConnectable *connectable,
                                                         GCancellable *cancellable,
                                                         GAsyncReadyCallback callback,
                                                         gpointer user_data);

This is the asynchronous version of g_socket_client_connect().

When the operation is finished callback will be called. You can then call g_socket_client_connect_finish() to get the result of the operation.

Since 2.22

g_socket_client_connect_finish ()

GSocketConnection * g_socket_client_connect_finish      (GSocketClient *client,
                                                         GAsyncResult *result,
                                                         GError **error);

Finishes an async connect operation. See g_socket_client_connect_async()

Since 2.22

g_socket_client_connect_to_host ()

GSocketConnection * g_socket_client_connect_to_host     (GSocketClient *client,
                                                         const gchar *host_and_port,
                                                         guint16 default_port,
                                                         GCancellable *cancellable,
                                                         GError **error);

This is a helper function for g_socket_client_connect().

Attempts to create a TCP connection to the named host.

host_and_port may be in any of a number of recognised formats: an IPv6 address, an IPv4 address, or a domain name (in which case a DNS lookup is performed). Quoting with [] is supported for all address types. A port override may be specified in the usual way with a colon. Ports may be given as decimal numbers or symbolic names (in which case an /etc/services lookup is performed).

If no port override is given in host_and_port then default_port will be used as the port number to connect to.

In general, host_and_port is expected to be provided by the user (allowing them to give the hostname, and a port overide if necessary) and default_port is expected to be provided by the application.

In the case that an IP address is given, a single connection attempt is made. In the case that a name is given, multiple connection attempts may be made, in turn and according to the number of address records in DNS, until a connection succeeds.

Upon a successful connection, a new GSocketConnection is constructed and returned. The caller owns this new object and must drop their reference to it when finished with it.

In the event of any failure (DNS error, service not found, no hosts connectable) NULL is returned and error (if non-NULL) is set accordingly.

Since 2.22

g_socket_client_connect_to_host_async ()

void                g_socket_client_connect_to_host_async
                                                        (GSocketClient *client,
                                                         const gchar *host_and_port,
                                                         guint16 default_port,
                                                         GCancellable *cancellable,
                                                         GAsyncReadyCallback callback,
                                                         gpointer user_data);

This is the asynchronous version of g_socket_client_connect_to_host().

When the operation is finished callback will be called. You can then call g_socket_client_connect_to_host_finish() to get the result of the operation.

Since 2.22

g_socket_client_connect_to_host_finish ()

GSocketConnection * g_socket_client_connect_to_host_finish
                                                        (GSocketClient *client,
                                                         GAsyncResult *result,
                                                         GError **error);

Finishes an async connect operation. See g_socket_client_connect_to_host_async()

Since 2.22

g_socket_client_connect_to_service ()

GSocketConnection * g_socket_client_connect_to_service  (GSocketClient *client,
                                                         const gchar *domain,
                                                         const gchar *service,
                                                         GCancellable *cancellable,
                                                         GError **error);

Attempts to create a TCP connection to a service.

This call looks up the SRV record for service at domain for the "tcp" protocol. It then attempts to connect, in turn, to each of the hosts providing the service until either a connection succeeds or there are no hosts remaining.

Upon a successful connection, a new GSocketConnection is constructed and returned. The caller owns this new object and must drop their reference to it when finished with it.

In the event of any failure (DNS error, service not found, no hosts connectable) NULL is returned and error (if non-NULL) is set accordingly.

g_socket_client_connect_to_service_async ()

void                g_socket_client_connect_to_service_async
                                                        (GSocketClient *client,
                                                         const gchar *domain,
                                                         const gchar *service,
                                                         GCancellable *cancellable,
                                                         GAsyncReadyCallback callback,
                                                         gpointer user_data);

This is the asynchronous version of g_socket_client_connect_to_service().

Since 2.22

g_socket_client_connect_to_service_finish ()

GSocketConnection * g_socket_client_connect_to_service_finish
                                                        (GSocketClient *client,
                                                         GAsyncResult *result,
                                                         GError **error);

Finishes an async connect operation. See g_socket_client_connect_to_service_async()

Since 2.22

g_socket_client_set_family ()

void                g_socket_client_set_family          (GSocketClient *client,
                                                         GSocketFamily family);

Sets the socket family of the socket client. If this is set to something other than G_SOCKET_FAMILY_INVALID then the sockets created by this object will be of the specified family.

This might be useful for instance if you want to force the local connection to be an ipv4 socket, even though the address might be an ipv6 mapped to ipv4 address.

Since 2.22

g_socket_client_set_local_address ()

void                g_socket_client_set_local_address   (GSocketClient *client,
                                                         GSocketAddress *address);

Sets the local address of the socket client. The sockets created by this object will bound to the specified address (if not NULL) before connecting.

This is useful if you want to ensure the the local side of the connection is on a specific port, or on a specific interface.

Since 2.22

g_socket_client_set_protocol ()

void                g_socket_client_set_protocol        (GSocketClient *client,
                                                         GSocketProtocol protocol);

Sets the protocol of the socket client. The sockets created by this object will use of the specified protocol.

If protocol is 0 that means to use the default protocol for the socket family and type.

Since 2.22

g_socket_client_set_socket_type ()

void                g_socket_client_set_socket_type     (GSocketClient *client,
                                                         GSocketType type);

Sets the socket type of the socket client. The sockets created by this object will be of the specified type.

It doesn't make sense to specify a type of G_SOCKET_TYPE_DATAGRAM, as GSocketClient is used for connection oriented services.

Since 2.22

g_socket_client_get_family ()

GSocketFamily       g_socket_client_get_family          (GSocketClient *client);

Gets the socket family of the socket client.

See g_socket_client_set_family() for details.

Since 2.22

g_socket_client_get_local_address ()

GSocketAddress *    g_socket_client_get_local_address   (GSocketClient *client);

Gets the local address of the socket client.

See g_socket_client_set_local_address() for details.

Since 2.22

g_socket_client_get_protocol ()

GSocketProtocol     g_socket_client_get_protocol        (GSocketClient *client);

Gets the protocol name type of the socket client.

See g_socket_client_set_protocol() for details.

Since 2.22

g_socket_client_get_socket_type ()

GSocketType         g_socket_client_get_socket_type     (GSocketClient *client);

Gets the socket type of the socket client.

See g_socket_client_set_socket_type() for details.

Since 2.22

The "family" property

  "family"                   GSocketFamily         : Read / Write / Construct

The sockets address family to use for socket construction.

Default value: G_SOCKET_FAMILY_INVALID

The "local-address" property

  "local-address"            GSocketAddress*       : Read / Write / Construct

The local address constructed sockets will be bound to.

The "protocol" property

  "protocol"                 GSocketProtocol       : Read / Write / Construct

The protocol to use for socket construction, or 0 for default.

Default value: G_SOCKET_PROTOCOL_DEFAULT

The "type" property

  "type"                     GSocketType           : Read / Write / Construct

The sockets type to use for socket construction.

Default value: G_SOCKET_TYPE_STREAM