## TpBaseConnection

TpBaseConnection — base class for TpSvcConnection implementations

## Synopsis

    #include <telepathy-glib/telepathy-glib.h>

    #define             TP_INTERNAL_CONNECTION_STATUS_NEW
                        TpBaseConnection;
    struct              TpBaseConnectionClass;
    GPtrArray *         (*TpBaseConnectionCreateChannelFactoriesImpl)
                                                            (TpBaseConnection *self);
    GPtrArray *         (*TpBaseConnectionCreateChannelManagersImpl)
                                                            (TpBaseConnection *self);
    void                (*TpBaseConnectionCreateHandleReposImpl)
                                                            (TpBaseConnection *self,
                                                             TpHandleRepoIface *repos[TP_NUM_HANDLE_TYPES]);
    gchar *             (*TpBaseConnectionGetUniqueConnectionNameImpl)
                                                            (TpBaseConnection *self);
    GPtrArray *         (*TpBaseConnectionGetInterfacesImpl)
                                                            (TpBaseConnection *self);
    void                (*TpBaseConnectionProc)             (TpBaseConnection *self);
    gboolean            (*TpBaseConnectionStartConnectingImpl)
                                                            (TpBaseConnection *self,
                                                             GError **error);
    const gchar *       tp_base_connection_get_bus_name     (TpBaseConnection *self);
    const gchar *       tp_base_connection_get_object_path  (TpBaseConnection *self);
    TpDBusDaemon *      tp_base_connection_get_dbus_daemon  (TpBaseConnection *self);
    gboolean            tp_base_connection_register         (TpBaseConnection *self,
                                                             const gchar *cm_name,
                                                             gchar **bus_name,
                                                             gchar **object_path,
                                                             GError **error);
    TpHandleRepoIface * tp_base_connection_get_handles      (TpBaseConnection *self,
                                                             TpHandleType handle_type);
    TpHandle            tp_base_connection_get_self_handle  (TpBaseConnection *self);
    void                tp_base_connection_set_self_handle  (TpBaseConnection *self,
                                                             TpHandle self_handle);
    TpConnectionStatus  tp_base_connection_get_status       (TpBaseConnection *self);
    gboolean            tp_base_connection_is_destroyed     (TpBaseConnection *self);
    gboolean            tp_base_connection_check_connected  (TpBaseConnection *self,
                                                             GError **error);
    void                tp_base_connection_change_status    (TpBaseConnection *self,
                                                             TpConnectionStatus status,
                                                             TpConnectionStatusReason reason);
    void                tp_base_connection_disconnect_with_dbus_error
                                                            (TpBaseConnection *self,
                                                             const gchar *error_name,
                                                             GHashTable *details,
                                                             TpConnectionStatusReason reason);
    void                tp_base_connection_disconnect_with_dbus_error_vardict
                                                            (TpBaseConnection *self,
                                                             const gchar *error_name,
                                                             GVariant *details,
                                                             TpConnectionStatusReason reason);
    void                tp_base_connection_finish_shutdown  (TpBaseConnection *self);
    void                tp_base_connection_add_interfaces   (TpBaseConnection *self,
                                                             const gchar **interfaces);
    void                tp_base_connection_dbus_request_handles
                                                            (TpSvcConnection *iface,
                                                             guint handle_type,
                                                             const gchar **names,
                                                             DBusGMethodInvocation *context);
    #define             TP_BASE_CONNECTION_ERROR_IF_NOT_CONNECTED(conn,
                                                             context)
    void                tp_base_connection_register_with_contacts_mixin
                                                            (TpBaseConnection *self);
    void                tp_base_connection_add_possible_client_interest
                                                            (TpBaseConnection *self,
                                                             GQuark token);
    void                tp_base_connection_add_client_interest
                                                            (TpBaseConnection *self,
                                                             const gchar *unique_name,
                                                             const gchar *token,
                                                             gboolean only_if_uninterested);

    struct              TpChannelManagerIter;
    void                tp_base_connection_channel_manager_iter_init
                                                            (TpChannelManagerIter *iter,
                                                             TpBaseConnection *self);
    gboolean            tp_base_connection_channel_manager_iter_next
                                                            (TpChannelManagerIter *iter,
                                                             TpChannelManager **manager_out);

## Object Hierarchy

      GObject
       +----TpBaseConnection

## Implemented Interfaces

TpBaseConnection implements TpSvcConnection, TpSvcDBusProperties and TpSvcConnectionInterfaceRequests.

## Properties

      "dbus-daemon"              TpDBusDaemon*         : Read / Write / Construct Only
      "dbus-status"              guint                 : Read
      "has-immortal-handles"     gboolean              : Read
      "interfaces"               GStrv                 : Read
      "protocol"                 gchar*                : Read / Write / Construct Only
      "self-handle"              guint                 : Read / Write

## Signals

      "clients-interested"                             : Has Details
      "clients-uninterested"                           : Has Details
      "shutdown-finished"                              : Has Details

## Description

This base class makes it easier to write TpSvcConnection implementations by managing connection status, channel factories and handle tracking. A subclass should often not need to implement any of the Connection methods itself.

However, methods may be reimplemented if needed: for instance, Gabble overrides RequestHandles so it can validate MUC rooms, which must be done asynchronously.

## Details

### TP_INTERNAL_CONNECTION_STATUS_NEW

    #   define TP_INTERNAL_CONNECTION_STATUS_NEW ((TpConnectionStatus)(-1))

A special value for TpConnectionStatus, used within GLib connection managers to indicate that the connection is disconnected because connection has never been attempted (as distinct from disconnected after connection has started, either by user request or an error).

Must never be visible on the D-Bus - `TP_CONNECTION_STATUS_DISCONNECTED` is sent instead.

### TpBaseConnection

    typedef struct _TpBaseConnection TpBaseConnection;

Data structure representing a generic TpSvcConnection implementation.

Since 0.19.1, accessing the fields of this structure is deprecated. Use `tp_base_connection_get_bus_name()`, `tp_base_connection_get_object_path()`, `tp_base_connection_get_status()`, `tp_base_connection_get_self_handle()` instead.

### struct TpBaseConnectionClass

    struct TpBaseConnectionClass {
        GObjectClass parent_class;

    #ifdef __GI_SCANNER__
    #else
        TpBaseConnectionCreateHandleReposImpl create_handle_repos;
    #endif

        TpBaseConnectionCreateChannelFactoriesImpl create_channel_factories;

        TpBaseConnectionGetUniqueConnectionNameImpl get_unique_connection_name;

        TpBaseConnectionProc connecting;
        TpBaseConnectionProc connected;
        TpBaseConnectionProc disconnected;

        TpBaseConnectionProc shut_down;

        TpBaseConnectionStartConnectingImpl start_connecting;

        TpBaseConnectionCreateChannelManagersImpl create_channel_managers;

        TpBaseConnectionGetInterfacesImpl get_interfaces_always_present;
    };

The class of a TpBaseConnection. Many members are virtual methods etc. to be filled in in the subclass' class_init function.

GObjectClass `parent_class`; | The superclass' structure
TpBaseConnectionCreateHandleReposImpl `create_handle_repos`; | Fill in suitable handle repositories in the given array for all those handle types this Connection supports. Must be set by subclasses to a non-`NULL` value; the function must create at least a CONTACT handle repository (failing to do so will cause a crash).
TpBaseConnectionCreateChannelFactoriesImpl `create_channel_factories`; | Create an array of channel factories for this Connection. At least one of this or `create_channel_managers` must be set by subclasses to a non-`NULL` value; in new code, setting this to `NULL` and using channel managers exclusively is recommended.
TpBaseConnectionGetUniqueConnectionNameImpl `get_unique_connection_name`; | Construct a unique name for this connection (for example using the protocol's format for usernames). If `NULL` (the default), a unique name will be generated. Subclasses should usually override this to get more obvious names, to aid debugging and prevent multiple connections to the same account.
TpBaseConnectionProc `connecting`; | If set by subclasses, will be called just after the state changes to CONNECTING. May be `NULL` if nothing special needs to happen.
TpBaseConnectionProc `connected`; | If set by subclasses, will be called just after the state changes to CONNECTED. May be `NULL` if nothing special needs to happen.
TpBaseConnectionProc `disconnected`; | If set by subclasses, will be called just after the state changes to DISCONNECTED. May be `NULL` if nothing special needs to happen.
TpBaseConnectionProc `shut_down`; | Called after `disconnected()` is called, to clean up the connection. Must start the shutdown process for the underlying network connection, and arrange for `tp_base_connection_finish_shutdown()` to be called after the underlying connection has been closed. May not be left as `NULL`.
TpBaseConnectionStartConnectingImpl `start_connecting`; | Asynchronously start connecting - called to implement the Connect D-Bus method. See TpBaseConnectionStartConnectingImpl for details. May not be left as `NULL`.
TpBaseConnectionCreateChannelManagersImpl `create_channel_managers`; | Create an array of channel managers for this Connection. At least one of this or `create_channel_factories` must be set by subclasses to a non-`NULL` value. Since: 0.7.15

TpBaseConnectionGetInterfacesImpl `get_interfaces_always_present`;

Returns a GPtrArray of extra D-Bus interfaces which are always implemented by instances of this class, which may be filled in by subclasses. The default is to list no additional interfaces. Individual instances may detect which additional interfaces they support and signal them before going to state CONNECTED by calling `tp_base_connection_add_interfaces()`.

### TpBaseConnectionCreateChannelFactoriesImpl ()

    GPtrArray *         (*TpBaseConnectionCreateChannelFactoriesImpl)
                                                            (TpBaseConnection *self);

Signature of an implementation of the create_channel_factories method of TpBaseConnection.

`self` : | The implementation, a subclass of TpBaseConnection
Returns : | a GPtrArray of objects implementing TpChannelFactoryIface which, between them, implement all channel types this Connection supports. [transfer full]

### TpBaseConnectionCreateChannelManagersImpl ()

    GPtrArray *         (*TpBaseConnectionCreateChannelManagersImpl)
                                                            (TpBaseConnection *self);

Signature of an implementation of the create_channel_managers method of TpBaseConnection.

`self` : | The implementation, a subclass of TpBaseConnection
Returns : | a GPtrArray of objects implementing TpChannelManager which, between them, implement all channel types this Connection supports. [transfer full]

### TpBaseConnectionCreateHandleReposImpl ()

    void                (*TpBaseConnectionCreateHandleReposImpl)
                                                            (TpBaseConnection *self,
                                                             TpHandleRepoIface *repos[TP_NUM_HANDLE_TYPES]);

Signature of an implementation of the create_handle_repos method of TpBaseConnection.

`self` : | The connection object
`repos` : | An array of pointers to be filled in; the implementation may assume all are initially NULL.

### TpBaseConnectionGetUniqueConnectionNameImpl ()

    gchar *             (*TpBaseConnectionGetUniqueConnectionNameImpl)
                                                            (TpBaseConnection *self);

Signature of the `get_unique_connection_name` virtual method on TpBaseConnection.

`self` : | The implementation, a subclass of TpBaseConnection
Returns : | a name for this connection which will be unique within this connection manager process, as a string which the caller must free with g_free. [transfer full]

### TpBaseConnectionGetInterfacesImpl ()

    GPtrArray *         (*TpBaseConnectionGetInterfacesImpl)
                                                            (TpBaseConnection *self);

Signature of an implementation of TpBaseConnectionClass.get_interfaces_always_present virtual function.

Implementation must first chainup on parent class implementation and then add extra interfaces into the GPtrArray.

    static GPtrArray *
    my_connection_get_interfaces_always_present (TpBaseConnection *self)
    {
      GPtrArray *interfaces;

      interfaces = TP_BASE_CONNECTION_CLASS (
          my_connection_parent_class)->get_interfaces_always_present (self);

      g_ptr_array_add (interfaces, TP_IFACE_BADGERS);

      return interfaces;
    }

`self` : | a TpBaseConnection
Returns : | a GPtrArray of static strings for D-Bus interfaces implemented by this client. [transfer container]

Since 0.19.4

### TpBaseConnectionProc ()

    void                (*TpBaseConnectionProc)             (TpBaseConnection *self);

Signature of a virtual method on TpBaseConnection that takes no additional parameters and returns nothing.

`self` : | The connection object

### TpBaseConnectionStartConnectingImpl ()

    gboolean            (*TpBaseConnectionStartConnectingImpl)
                                                            (TpBaseConnection *self,
                                                             GError **error);

Signature of an implementation of the start_connecting method of TpBaseConnection.

On entry, the implementation may assume that it is in state NEW.

If `TRUE` is returned, the Connect D-Bus method succeeds; the implementation must either have already set the status to CONNECTED by calling `tp_base_connection_change_status()`, or have arranged for a status change to either state DISCONNECTED or CONNECTED to be signalled by calling `tp_base_connection_change_status()` at some later time. If the status is still NEW after returning `TRUE`, TpBaseConnection will automatically change it to CONNECTING for reason REQUESTED.

If `FALSE` is returned, the error will be raised from Connect as an exception. If the status is not DISCONNECTED after `FALSE` is returned, TpBaseConnection will automatically change it to DISCONNECTED with a reason appropriate to the error; NetworkError results in NETWORK_ERROR, PermissionDenied results in AUTHENTICATION_FAILED, and all other errors currently result in NONE_SPECIFIED.

All except the simplest connection managers are expected to implement this asynchronously, returning `TRUE` in most cases and changing the status to CONNECTED or DISCONNECTED later.

`self` : | The connection object
`error` : | Set to the error if `FALSE` is returned
Returns : | `FALSE` if failure has already occurred, else `TRUE`.

### tp_base_connection_get_bus_name ()

    const gchar *       tp_base_connection_get_bus_name     (TpBaseConnection *self);

Return the bus name starting with `TP_CONN_BUS_NAME_BASE` that represents this connection on D-Bus.

The returned string belongs to the TpBaseConnection and must be copied by the caller if it will be kept.

If this connection has never been present on D-Bus (`tp_base_connection_register()` has never been called), return `NULL` instead.

`self` : | the connection
Returns : | the bus name of this connection, or `NULL`. [allow-none][transfer none]

Since 0.19.1

### tp_base_connection_get_object_path ()

    const gchar *       tp_base_connection_get_object_path  (TpBaseConnection *self);

Return the object path starting with `TP_CONN_OBJECT_PATH_BASE` that represents this connection on D-Bus.

The returned string belongs to the TpBaseConnection and must be copied by the caller if it will be kept.

If this connection has never been present on D-Bus (`tp_base_connection_register()` has never been called), return `NULL` instead.

`self` : | the connection
Returns : | the object path of this connection, or `NULL`. [allow-none][transfer none]

Since 0.19.1

### tp_base_connection_get_dbus_daemon ()

    TpDBusDaemon *      tp_base_connection_get_dbus_daemon  (TpBaseConnection *self);

`self` : | the connection manager
Returns : | the value of the "dbus-daemon" property. The caller must reference the returned object with `g_object_ref()` if it will be kept. [transfer none]

Since 0.11.3

### tp_base_connection_register ()

    gboolean            tp_base_connection_register         (TpBaseConnection *self,
                                                             const gchar *cm_name,
                                                             gchar **bus_name,
                                                             gchar **object_path,
                                                             GError **error);

Make the connection object appear on the bus, returning the bus name and object path used. If `TRUE` is returned, the connection owns the bus name, and will release it when destroyed.

Since 0.11.11, `bus_name` and `object_path` may be `NULL` if the strings are not needed.

`self` : | A connection
`cm_name` : | The name of the connection manager in the Telepathy protocol
`bus_name` : | Used to return the bus name corresponding to the connection if `TRUE` is returned. To be freed by the caller. [out]
`object_path` : | Used to return the object path of the connection if `TRUE` is returned. To be freed by the caller. [out]
`error` : | Used to return an error if `FALSE` is returned; may be `NULL`
Returns : | `TRUE` on success, `FALSE` on error.

### tp_base_connection_get_handles ()

    TpHandleRepoIface * tp_base_connection_get_handles      (TpBaseConnection *self,
                                                             TpHandleType handle_type);

`self` : | A connection
`handle_type` : | The handle type
Returns : | the handle repository corresponding to the given handle type, or NULL if it's unsupported or invalid. [transfer none]

### tp_base_connection_get_self_handle ()

    TpHandle            tp_base_connection_get_self_handle  (TpBaseConnection *self);

Returns the "self-handle" property, which is guaranteed not to be 0 once the connection has moved to the CONNECTED state.

`self` : | A connection
Returns : | the current self handle of the connection.

Since 0.7.15

### tp_base_connection_set_self_handle ()

    void                tp_base_connection_set_self_handle  (TpBaseConnection *self,
                                                             TpHandle self_handle);

Sets the "self-handle" property. self_handle may not be 0 once the connection has moved to the CONNECTED state.

`self` : | A connection
`self_handle` : | The new self handle for the connection.

Since 0.7.15

### tp_base_connection_get_status ()

    TpConnectionStatus  tp_base_connection_get_status       (TpBaseConnection *self);

Return the status of this connection, as set by `tp_base_connection_change_status()` or similar functions like `tp_base_connection_disconnect_with_dbus_error()`.

Like the corresponding D-Bus property, this method returns `TP_CONNECTION_STATUS_DISCONNECTED` in two situations: either the connection is newly-created (and has never emitted "status-changed"), or D-Bus clients have already been told that it has been destroyed (by the Disconnect D-Bus method, a failed attempt to connect, or loss of an established connection). Use `tp_base_connection_is_destroyed()` to distinguish between the two.

`self` : | the connection
Returns : | the value of "dbus-status"

Since 0.19.1

### tp_base_connection_is_destroyed ()

    gboolean            tp_base_connection_is_destroyed     (TpBaseConnection *self);

Return whether this connection has already emitted the D-Bus signal indicating that it has been destroyed.

In particular, this can be used to distinguish between the two reasons why `tp_base_connection_get_status()` would return `TP_CONNECTION_STATUS_DISCONNECTED`: it will return `FALSE` if the connection is newly-created, and `TRUE` if the Disconnect D-Bus method has been called, an attempt to connect has failed, or an established connection has encountered an error.

`self` : | the connection
Returns : | `TRUE` if this connection is disappearing from D-Bus

Since 0.19.1

### tp_base_connection_check_connected ()

    gboolean            tp_base_connection_check_connected  (TpBaseConnection *self,
                                                             GError **error);

Return whether this connection is fully active and connected. If it is not, raise `TP_ERROR_DISCONNECTED`.

This is equivalent to checking whether `tp_base_connection_get_status()` returns `TP_CONNECTION_STATUS_CONNECTED`; it is provided because methods on the connection often need to make this check, and return a GError if it fails.

`self` : | the connection
`error` : | used to raise `TP_ERROR_DISCONNECTED` if `FALSE` is returned
Returns : | `TRUE` if this connection is connected

Since 0.19.1

### tp_base_connection_change_status ()

    void                tp_base_connection_change_status    (TpBaseConnection *self,
                                                             TpConnectionStatus status,
                                                             TpConnectionStatusReason reason);

Change the status of the connection. The allowed state transitions are:

- TP_INTERNAL_CONNECTION_STATUS_NEW → TP_CONNECTION_STATUS_CONNECTING
- TP_CONNECTION_STATUS_CONNECTING → TP_CONNECTION_STATUS_CONNECTED
- TP_INTERNAL_CONNECTION_STATUS_NEW → TP_CONNECTION_STATUS_CONNECTED (exactly equivalent to both of the above one after the other; see below)
- anything except TP_CONNECTION_STATUS_DISCONNECTED → TP_CONNECTION_STATUS_DISCONNECTED

Before the transition to TP_CONNECTION_STATUS_CONNECTED, the implementation must have discovered the handle for the local user and passed it to `tp_base_connection_set_self_handle()`.

Changing from NEW to CONNECTED is implemented by doing the transition from NEW to CONNECTING, followed by the transition from CONNECTING to CONNECTED; it's exactly equivalent to calling tp_base_connection_change_status for those two transitions one after the other.

Any other valid transition does the following, in this order:

- Update TpBaseConnection.status;
- If the new state is TP_CONNECTION_STATUS_DISCONNECTED, call `tp_channel_factory_iface_close_all()` on all channel factories
- Emit the D-Bus StatusChanged signal;
- Call TpBaseConnectionClass.connecting, TpBaseConnectionClass.connected or TpBaseConnectionClass.disconnected as appropriate;
- Call the channel factories' status change callbacks;
- If the new state is TP_CONNECTION_STATUS_DISCONNECTED, call the subclass' TpBaseConnectionClass.shut_down callback.

To provide more details about what happened when moving to `status` TP_CONNECTION_STATUS_DISCONNECTED due to an error, consider calling `tp_base_connection_disconnect_with_dbus_error()` instead of this function.

Changed in 0.7.35: the `self_handle` member of TpBaseConnection was previously set to 0 at this stage. It now remains non-zero until the object is disposed.

`self` : | The connection
`status` : | The new status
`reason` : | The reason for the status change

### tp_base_connection_disconnect_with_dbus_error ()

    void                tp_base_connection_disconnect_with_dbus_error
                                                            (TpBaseConnection *self,
                                                             const gchar *error_name,
                                                             GHashTable *details,
                                                             TpConnectionStatusReason reason);

Changes the TpBaseConnection.status of `self` to `TP_CONNECTION_STATUS_DISCONNECTED`, as if by a call to `tp_base_connection_change_status()`, but additionally emits the `ConnectionError` D-Bus signal to provide more details about the error.

Well-known keys for `details` are documented in the Telepathy specification's definition of the ConnectionError signal, and include:

- `"debug-message"`, whose value should have type G_TYPE_STRING, for debugging information about the disconnection which should not be shown to the user
- `"server-message"`, whose value should also have type G_TYPE_STRING, for a human-readable error message from the server (in an unspecified language) explaining why the user was disconnected.

`self` : | The connection
`error_name` : | The D-Bus error with which the connection changed status to Disconnected
`details` : | Further details of the error, as a hash table where the keys are strings as defined in the Telepathy specification, and the values are GValues. `NULL` is allowed, and treated as an empty hash table.
`reason` : | The reason code to use in the StatusChanged signal (a less specific, non-extensible version of `error_name`)

Since 0.7.24

### tp_base_connection_disconnect_with_dbus_error_vardict ()

    void                tp_base_connection_disconnect_with_dbus_error_vardict
                                                            (TpBaseConnection *self,
                                                             const gchar *error_name,
                                                             GVariant *details,
                                                             TpConnectionStatusReason reason);

Changes the TpBaseConnection.status of `self` to `TP_CONNECTION_STATUS_DISCONNECTED`, as if by a call to `tp_base_connection_change_status()`, but additionally emits the `ConnectionError` D-Bus signal to provide more details about the error.

Well-known keys for `details` are documented in the Telepathy specification's definition of the ConnectionError signal, and include:

- `"debug-message"`, whose value should have type G_TYPE_STRING, for debugging information about the disconnection which should not be shown to the user
- `"server-message"`, whose value should also have type G_TYPE_STRING, for a human-readable error message from the server (in an unspecified language) explaining why the user was disconnected.

`self` : | The connection
`error_name` : | The D-Bus error with which the connection changed status to Disconnected
`details` : | Further details of the error, as a variant of type `G_VARIANT_TYPE_VARDICT`. The keys are strings as defined in the Telepathy specification, and the values are of type `G_VARIANT_TYPE_VARIANT`. `NULL` is allowed, and treated as an empty dictionary.
`reason` : | The reason code to use in the StatusChanged signal (a less specific, non-extensible version of `error_name`)

Since 0.7.24

### tp_base_connection_finish_shutdown ()

    void                tp_base_connection_finish_shutdown  (TpBaseConnection *self);

Tell the connection manager that this Connection has been disconnected, has emitted StatusChanged and is ready to be removed from D-Bus.

`self` : | The connection

### tp_base_connection_add_interfaces ()

    void                tp_base_connection_add_interfaces   (TpBaseConnection *self,
                                                             const gchar **interfaces);

Add some interfaces to the list supported by this Connection. If you're going to call this function at all, you must do so before moving to state CONNECTED (or DISCONNECTED); if you don't call it, only the set of interfaces always present (`get_interfaces_always_present` in TpBaseConnectionClass) will be supported.

`self` : | A TpBaseConnection in state TP_INTERNAL_CONNECTION_STATUS_NEW or TP_CONNECTION_STATUS_CONNECTING
`interfaces` : | A `NULL`-terminated array of D-Bus interface names, which must remain valid at least until the connection enters state TP_CONNECTION_STATUS_DISCONNECTED (in practice, you should either use static strings, or use strdup'd strings and free them in the dispose callback).

### tp_base_connection_dbus_request_handles ()

    void                tp_base_connection_dbus_request_handles
                                                            (TpSvcConnection *iface,
                                                             guint handle_type,
                                                             const gchar **names,
                                                             DBusGMethodInvocation *context);

### Warning

`tp_base_connection_dbus_request_handles` is deprecated and should not be used in newly-written code. 0.19.0

Implements D-Bus method RequestHandles on interface org.freedesktop.Telepathy.Connection.

This was exported so subclasses could use it as a basis for their reimplementations, but reimplementing the method is now deprecated.

`iface` : | A pointer to TpBaseConnection, cast to a pointer to TpSvcConnection
`handle_type` : | The handle type (TpHandleType) as a guint
`names` : | A strv of handle names
`context` : | The dbus-glib method invocation context

### TP_BASE_CONNECTION_ERROR_IF_NOT_CONNECTED()

    #define             TP_BASE_CONNECTION_ERROR_IF_NOT_CONNECTED(conn, context)

If `conn` is not in state TP_CONNECTION_STATUS_CONNECTED, complete the D-Bus method invocation `context` by raising the Telepathy error TP_ERROR_DISCONNECTED, and return from the current function (which must be void). For use in D-Bus method implementations.

`conn` : | A TpBaseConnection
`context` : | A DBusGMethodInvocation

### tp_base_connection_register_with_contacts_mixin ()

    void                tp_base_connection_register_with_contacts_mixin
                                                            (TpBaseConnection *self);

Register the Connection interface with the Contacts interface to make it inspectable. The Contacts mixin should be initialized before this function is called

`self` : | An instance of the TpBaseConnections that uses the Contacts mixin

### tp_base_connection_add_possible_client_interest ()

    void                tp_base_connection_add_possible_client_interest
                                                            (TpBaseConnection *self,
                                                             GQuark token);

Add `token` to the set of tokens for which this connection will emit "clients-interested" and "clients-uninterested".

This method must be called from the GObjectClass.constructed or GObjectClass.constructor callback (otherwise, it will run too late to be useful).

`self` : | a connection
`token` : | a quark corresponding to a D-Bus interface, or a token representing part of a D-Bus interface, for which this connection wishes to be notified when clients register an interest

### tp_base_connection_add_client_interest ()

    void                tp_base_connection_add_client_interest
                                                            (TpBaseConnection *self,
                                                             const gchar *unique_name,
                                                             const gchar *token,
                                                             gboolean only_if_uninterested);

Add a "client interest" for `token` on behalf of the given client.

This emits "clients-interested" if this was the first time a client expressed an interest in this token.

`self` : | a TpBaseConnection
`unique_name` : | the unique bus name of a D-Bus client
`token` : | a D-Bus interface or a token representing part of an interface, added with `tp_base_connection_add_possible_client_interest()`
`only_if_uninterested` : | only add to the interest count if the client is not already interested (appropriate for APIs that implicitly subscribe on first use if this has not been done already, like Location)

### struct TpChannelManagerIter

    struct TpChannelManagerIter {
    };

An iterator over the TpChannelManager objects known to a TpBaseConnection. It has no public fields.

Use `tp_base_connection_channel_manager_iter_init()` to start iteration and `tp_base_connection_channel_manager_iter_next()` to continue.

Since 0.7.15

### tp_base_connection_channel_manager_iter_init ()

    void                tp_base_connection_channel_manager_iter_init
                                                            (TpChannelManagerIter *iter,
                                                             TpBaseConnection *self);

Initializes an iterator over the TpChannelManager objects known to `self`. It is intended to be used as followed:

    TpChannelManagerIter iter;
    TpChannelManager *manager;

    tp_base_connection_channel_manager_iter_init (&iter, base_conn);
    while (tp_base_connection_channel_manager_iter_next (&iter, &manager))
      {
        ...do something with manager...
      }

`iter` : | an uninitialized TpChannelManagerIter
`self` : | a connection

Since 0.7.15

### tp_base_connection_channel_manager_iter_next ()

    gboolean            tp_base_connection_channel_manager_iter_next
                                                            (TpChannelManagerIter *iter,
                                                             TpChannelManager **manager_out);

Advances `iter`, and retrieves the TpChannelManager it now points to. If there are no more channel managers, `manager_out` is not set and `FALSE` is returned.

`iter` : | an initialized TpChannelManagerIter
`manager_out` : | a location to store the channel manager, or `NULL`.
Returns : | `FALSE` if there are no more channel managers; else `TRUE`.

Since 0.7.15

## Property Details

### The `"dbus-daemon"` property

      "dbus-daemon"              TpDBusDaemon*         : Read / Write / Construct Only

TpDBusDaemon object encapsulating this object's connection to D-Bus. Read-only except during construction.

If this property is `NULL` or omitted during construction, the object will automatically attempt to connect to the starter or session bus with `tp_dbus_daemon_dup()` just after it is constructed; if this fails, this property will remain `NULL`, and `tp_base_connection_register()` will fail.

Since 0.11.3

### The `"dbus-status"` property

      "dbus-status"              guint                 : Read

The Connection.Status as visible on D-Bus, which is the same as TpBaseConnection.status except that `TP_INTERNAL_CONNECTION_STATUS_NEW` is replaced by `TP_CONNECTION_STATUS_DISCONNECTED`.

The "notify" signal is not currently emitted for this property.

Allowed values: <= 2

Default value: 2

Since 0.11.3

### The `"has-immortal-handles"` property

      "has-immortal-handles"     gboolean              : Read

This property is not useful to use directly. Its value is `TRUE`, to indicate that this version of telepathy-glib never unreferences handles until the connection becomes disconnected.

Default value: TRUE

Since 0.13.8

### The `"interfaces"` property

      "interfaces"               GStrv                 : Read

The set of D-Bus interfaces available on this Connection, other than Connection itself.

Since 0.11.3

### The `"protocol"` property

      "protocol"                 gchar*                : Read / Write / Construct Only

Identifier used in the Telepathy protocol when this connection's protocol name is required.

Default value: NULL

### The `"self-handle"` property

      "self-handle"              guint                 : Read / Write

The handle of type `TP_HANDLE_TYPE_CONTACT` representing the local user. Must be set nonzero by the subclass before moving to state CONNECTED.

Default value: 0

Since 0.7.15

## Signal Details

### The `"clients-interested"` signal

    void                user_function                      (TpBaseConnection *connection,
                                                            gchar            *token,
                                                            gpointer          user_data)       : Has Details

Emitted when a client becomes interested in any token that was added with `tp_base_connection_add_possible_client_interest()`.

The "signal detail" is a GQuark representing `token`. Modules implementing an interface (Location, say) should typically connect to a detailed signal like "clients-interested::org.freedesktop.Telepathy.Connection.Interface.Location" rather than receiving all emissions of this signal.

`connection` : | the TpBaseConnection
`token` : | the interface or part of an interface in which clients are newly interested
`user_data` : | user data set when the signal handler was connected.

### The `"clients-uninterested"` signal

    void                user_function                      (TpBaseConnection *connection,
                                                            gchar            *token,
                                                            gpointer          user_data)       : Has Details

Emitted when no more clients are interested in an interface added with `tp_base_connection_add_possible_client_interest()`, for which "clients-interested" was previously emitted.

As with "clients-interested", the "signal detail" is a GQuark representing `token`. Modules implementing an interface (Location, say) should typically connect to a detailed signal like "clients-uninterested::org.freedesktop.Telepathy.Connection.Interface.Location" rather than receiving all emissions of this signal.

`connection` : | the TpBaseConnection
`token` : | the interface or part of an interface in which clients are no longer interested
`user_data` : | user data set when the signal handler was connected.

### The `"shutdown-finished"` signal

    void                user_function                      (TpBaseConnection *connection,
                                                            gpointer          user_data)       : Has Details

Emitted by `tp_base_connection_finish_shutdown()` when the underlying network connection has been closed; TpBaseConnectionManager listens for this signal and removes connections from its table of active connections when it is received.

`connection` : | the TpBaseConnection
`user_data` : | user data set when the signal handler was connected.

## See Also

TpBaseConnectionManager, TpSvcConnection