Method

GioDBusConnectionsend_message_with_reply

since: 2.26

Declaration 

void
g_dbus_connection_send_message_with_reply (
  GDBusConnection* connection,
  GDBusMessage* message,
  GDBusSendMessageFlags flags,
  gint timeout_msec,
  volatile guint32* out_serial,
  GCancellable* cancellable,
  GAsyncReadyCallback callback,
  gpointer user_data
)

Description

Asynchronously sends message to the peer represented by connection.

Unless flags contain the G_DBUS_SEND_MESSAGE_FLAGS_PRESERVE_SERIAL flag, the serial number will be assigned by connection and set on message via g_dbus_message_set_serial(). If out_serial is not NULL, then the serial number used will be written to this location prior to submitting the message to the underlying transport. While it has a volatile qualifier, this is a historical artifact and the argument passed to it should not be volatile.

If connection is closed then the operation will fail with G_IO_ERROR_CLOSED. If cancellable is canceled, the operation will fail with G_IO_ERROR_CANCELLED. If message is not well-formed, the operation fails with G_IO_ERROR_INVALID_ARGUMENT.

This is an asynchronous method. When the operation is finished, callback will be invoked in the [thread-default main context][g-main-context-push-thread-default] of the thread you are calling this method from. You can then call g_dbus_connection_send_message_with_reply_finish() to get the result of the operation. See g_dbus_connection_send_message_with_reply_sync() for the synchronous version.

Note that message must be unlocked, unless flags contain the G_DBUS_SEND_MESSAGE_FLAGS_PRESERVE_SERIAL flag.

See this [server][gdbus-server] and [client][gdbus-unix-fd-client] for an example of how to use this low-level API to send and receive UNIX file descriptors.

Available since: 2.26

Parameters

message

Type: GDBusMessage

A GDBusMessage.

The data is owned by the caller of the function.
flags

Type: GDBusSendMessageFlags

Flags affecting how the message is sent.

timeout_msec

Type: gint

The timeout in milliseconds, -1 to use the default timeout or G_MAXINT for no timeout.

out_serial

Type: volatile guint32*

Return location for serial number assigned to message when sending it or NULL.

The argument will be set by the function.
The argument can be NULL.
cancellable

Type: GCancellable

A GCancellable or NULL.

The argument can be NULL.
The data is owned by the caller of the function.
callback

Type: GAsyncReadyCallback

A GAsyncReadyCallback to call when the request is satisfied or NULL if you don’t care about the result.

The argument can be NULL.
user_data

Type: gpointer

The data to pass to callback.

The argument can be NULL.
The data is owned by the caller of the function.