Net::DBus::Binding::Message (3)
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========================================================================
(The comments found at the beginning of the groff file "man3/Net::DBus::Binding::Message.3pm".)
NAME
Net::DBus::Binding::Message - Base class for messages
SYNOPSIS
Sending a message
my $msg = new Net::DBus::Binding::Message::Signal;
my $iterator = $msg->iterator;
$iterator->append_byte(132);
$iterator->append_int32(14241);
$connection->send($msg);
DESCRIPTION
Provides a base class for the different kinds of
message that can be sent/received. Instances of
this class are never instantiated directly, rather
one of the four sub-types Net::DBus::Binding::Message::Signal,
Net::DBus::Binding::Message::MethodCall, Net::DBus::Binding::Message::MethodReturn,
Net::DBus::Binding::Message::Error should be used.
CONSTANTS
The following constants are defined in this module. They are
not exported into the caller's namespace & thus must be referenced
with their fully qualified package names
TYPE_ARRAY
-
Constant representing the signature value associated with the
array data type.
TYPE_BOOLEAN
-
Constant representing the signature value associated with the
boolean data type.
TYPE_BYTE
-
Constant representing the signature value associated with the
byte data type.
TYPE_DICT_ENTRY
-
Constant representing the signature value associated with the
dictionary entry data type.
TYPE_DOUBLE
-
Constant representing the signature value associated with the
IEEE
double precision floating point data type.
TYPE_INT16
-
Constant representing the signature value associated with the
signed 16 bit integer data type.
TYPE_INT32
-
Constant representing the signature value associated with the
signed 32 bit integer data type.
TYPE_INT64
-
Constant representing the signature value associated with the
signed 64 bit integer data type.
TYPE_OBJECT_PATH
-
Constant representing the signature value associated with the
object path data type.
TYPE_STRING
-
Constant representing the signature value associated with the
UTF-8
string data type.
TYPE_SIGNATURE
-
Constant representing the signature value associated with the
signature data type.
TYPE_STRUCT
-
Constant representing the signature value associated with the
struct data type.
TYPE_UINT16
-
Constant representing the signature value associated with the
unsigned 16 bit integer data type.
TYPE_UINT32
-
Constant representing the signature value associated with the
unsigned 32 bit integer data type.
TYPE_UINT64
-
Constant representing the signature value associated with the
unsigned 64 bit integer data type.
TYPE_VARIANT
-
Constant representing the signature value associated with the
variant data type.
TYPE_UNIX_FD
-
Constant representing the signature value associated with the
unix file descriptor data type.
METHODS
- my $msg = Net::DBus::Binding::Message->new(message => $rawmessage);
-
Creates a new message object, initializing it with the underlying C
message object given by the "message" object. This constructor is
intended for internal use only, instead refer to one of the four
sub-types for this class for specific message types
- my $type = $msg->get_type
-
Retrieves the type code for this message. The returned value corresponds
to one of the four "Net::DBus::Binding::Message::MESSAGE_TYPE_*" constants.
- my $interface = $msg->get_interface
-
Retrieves the name of the interface targeted by this message, possibly
an empty string if there is no applicable interface for this message.
- my $path = $msg->get_path
-
Retrieves the object path associated with the message, possibly an
empty string if there is no applicable object for this message.
- my $name = $msg->get_destination
-
Retrieves the uniqe or well-known bus name for client intended to be
the recipient of the message. Possibly returns an empty string if
the message is being broadcast to all clients.
- my $name = $msg->get_sender
-
Retireves the unique name of the client sending the message
- my $serial = $msg->get_serial
-
Retrieves the unique serial number of this message. The number
is guarenteed unique for as long as the connection over which
the message was sent remains open. May return zero, if the message
is yet to be sent.
- my $name = $msg->get_member
-
For method calls, retrieves the name of the method to be invoked,
while for signals, retrieves the name of the signal.
- my $sig = $msg->get_signature
-
Retrieves a string representing the type signature of the values
packed into the body of the message.
- $msg->set_sender($name)
-
Set the name of the client sending the message. The name must
be the unique name of the client.
- $msg->set_destination($name)
-
Set the name of the intended recipient of the message. This is
typically used for signals to switch them from broadcast to
unicast.
- my $iterator = $msg->iterator;
-
Retrieves an iterator which can be used for reading or
writing fields of the message. The returned object is
an instance of the "Net::DBus::Binding::Iterator" class.
- $boolean = $msg->get_no_reply()
-
Gets the flag indicating whether the message is expecting
a reply to be sent.
- $msg->set_no_reply($boolean)
-
Toggles the flag indicating whether the message is expecting
a reply to be sent. All method call messages expect a reply
by default. By toggling this flag the communication latency
is reduced by removing the need for the client to wait
- my @values = $msg->get_args_list
-
De-marshall all the values in the body of the message, using the
message signature to identify data types. The values are returned
as a list.
- $msg->append_args_list(@values)
-
Append a set of values to the body of the message. Values will
be encoded as either a string, list or dictionary as appropriate
to their Perl data type. For more specific data typing needs,
the Net::DBus::Binding::Iterator object should be used instead.
AUTHOR
Daniel P. Berrange
COPYRIGHT
Copyright (C) 2004-2011 Daniel P. Berrange
SEE ALSO
Net::DBus::Binding::Server, Net::DBus::Binding::Connection, Net::DBus::Binding::Message::Signal, Net::DBus::Binding::Message::MethodCall, Net::DBus::Binding::Message::MethodReturn, Net::DBus::Binding::Message::Error