## InfCommunicationRegistry InfCommunicationRegistry — Sharing connections between multiple groups |

## Stability Level

Unstable, unless otherwise indicated

## Functions

void | inf_communication_registry_register ()
void | inf_communication_registry_unregister ()
gboolean | inf_communication_registry_is_registered ()
void | inf_communication_registry_send ()
void | inf_communication_registry_cancel_messages ()

## Types and Values

struct | InfCommunicationRegistry
struct | InfCommunicationRegistryClass

## Object Hierarchy

        GObject
        ╰── InfCommunicationRegistry

## Includes

    #include <libinfinity/communication/inf-communication-registry.h>

## Description

InfCommunicationRegistry provides a way for InfCommunicationMethod implementations to share connections with other groups. Before using a connection, call `inf_communication_registry_register()`. Then, messages can be sent to the group via `inf_communication_registry_send()`.

The InfCommunicationRegistry calls `inf_communication_method_received()` on your method when it received a message for the group, `inf_communication_method_enqueued()` when sending the message cannot be cancelled anymore via `inf_communication_registry_cancel_messages()` and `inf_communication_method_sent()` when the message has been sent.

## Functions

### inf_communication_registry_register ()

    void
    inf_communication_registry_register (InfCommunicationRegistry *registry,
                                         InfCommunicationGroup *group,
                                         InfCommunicationMethod *method,
                                         InfXmlConnection *connection);

Registers connection with `group` . This allows sending messages to `connection` via `inf_communication_registry_send()`. For received messages, `inf_communication_method_received()` is called on `method` .

`connection` must have status `INF_XML_CONNECTION_OPEN`.

#### Parameters

registry | A InfCommunicationRegistry. |
group | The group for which to register a connection. |
method | The InfCommunicationMethod used. |
connection | The connection to register. |

### inf_communication_registry_unregister ()

    void
    inf_communication_registry_unregister (InfCommunicationRegistry *registry,
                                           InfCommunicationGroup *group,
                                           InfXmlConnection *connection);

Unregisters `connection` from `group` . Incoming messages are no longer reported to group's method, and `inf_communication_registry_send()` can no longer be called for `connection` .

#### Parameters

registry | A InfCommunicationRegistry. |
group | The group for which to unregister a connection. |
connection | The connection to unregister. |

### inf_communication_registry_is_registered ()

    gboolean
    inf_communication_registry_is_registered
                                   (InfCommunicationRegistry *registry,
                                    InfCommunicationGroup *group,
                                    InfXmlConnection *connection);

Returns whether `connection` has been registered for `group` with `inf_communication_registry_register()`.

#### Parameters

registry | A InfCommunicationRegistry. |
group | The group for which to check whether `connection` is registered. |
connection | The connection to check for registration. |

#### Returns

`TRUE` if `connection` has been registered, or `FALSE` otherwise.

### inf_communication_registry_send ()

    void
    inf_communication_registry_send (InfCommunicationRegistry *registry,
                                     InfCommunicationGroup *group,
                                     InfXmlConnection *connection,
                                     xmlNodePtr xml);

Sends an XML message to `connection` . `connection` must have been registered with `inf_communication_registry_register()` before. If the message has been sent, `inf_communication_method_sent()` is called on the method the connection was registered with. `inf_communication_method_enqueued()` is called when sending the message can no longer be cancelled via `inf_communication_registry_cancel_messages()`.

This function takes ownership of `xml` .

#### Parameters

registry | A InfCommunicationRegistry. |
group | The group for which to send the message InfCommunicationGroup. |
connection | A registered InfXmlConnection. |
xml | The message to send. | [transfer full]

### inf_communication_registry_cancel_messages ()

    void
    inf_communication_registry_cancel_messages
                                   (InfCommunicationRegistry *registry,
                                    InfCommunicationGroup *group,
                                    InfXmlConnection *connection);

Stops all messages scheduled to be sent to `connection` in `group` from being sent.

#### Parameters

registry | A InfCommunicationRegistry. |
group | The group for which to cancel messages. |
connection | A registered InfXmlConnection. |

## Types and Values

### struct InfCommunicationRegistry

    struct InfCommunicationRegistry;

InfCommunicationRegistry is an opaque data type. You should only access it via the public API functions.

### struct InfCommunicationRegistryClass

    struct InfCommunicationRegistryClass {
    };

This structure does not contain any public fields.