Method
GioDBusConnectionsend_message_with_reply_sync
since: 2.26
Declaration [src]
GDBusMessage*
g_dbus_connection_send_message_with_reply_sync (
  GDBusConnection* connection,
  GDBusMessage* message,
  GDBusSendMessageFlags flags,
  gint timeout_msec,
  volatile guint32* out_serial,
  GCancellable* cancellable,
  GError** error
)
Description [src]
Synchronously sends message to the peer represented by connection
and blocks the calling thread until a reply is received or the
timeout is reached. See g_dbus_connection_send_message_with_reply()
for the asynchronous version of this method.
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.
Note that error is only set if a local in-process error
occurred. That is to say that the returned GDBusMessage object may
be of type G_DBUS_MESSAGE_TYPE_ERROR. Use
g_dbus_message_to_gerror() to transcode this to a GError.
See this server and client for an example of how to use this low-level API to send and receive UNIX file descriptors.
Note that message must be unlocked, unless flags contain the
G_DBUS_SEND_MESSAGE_FLAGS_PRESERVE_SERIAL flag.
Available since: 2.26
Parameters
- message
- 
            Type: GDBusMessageA GDBusMessage.The data is owned by the caller of the method. 
- flags
- 
            Type: GDBusSendMessageFlagsFlags affecting how the message is sent. 
- timeout_msec
- 
            Type: gintThe timeout in milliseconds, -1 to use the default timeout or G_MAXINTfor no timeout.
- out_serial
- 
            Type: volatile guint32*Return location for serial number assigned to messagewhen sending it orNULL.The argument will be set by the function. The argument can be NULL.
- cancellable
- 
            Type: GCancellableA GCancellableorNULL.The argument can be NULL.The data is owned by the caller of the method. 
- error
- 
            Type: GError **The return location for a recoverable error. The argument can be NULL.If the return location is not NULL, then you must initialize it to aNULLGError*.The argument will be left initialized to NULLby the method if there are no errors.In case of error, the argument will be set to a newly allocated GError; the caller will take ownership of the data, and be responsible for freeing it.
Return value
Type: GDBusMessage
A locked GDBusMessage that is the reply to message or NULL if error is set.
| The caller of the method takes ownership of the returned data, and is responsible for freeing it. |