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Net::DBus::Binding::Message(3) User Contributed Perl Documentation Net::DBus::Binding::Message(3)

Net::DBus::Binding::Message - Base class for messages

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);

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.

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.

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 unique 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 guaranteed 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.

Daniel P. Berrange

Copyright (C) 2004-2011 Daniel P. Berrange

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
2019-02-12 perl v5.32.1

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