opcua.ua.uaprotocol_hand.MessageChunk Class Reference

Inheritance diagram for opcua.ua.uaprotocol_hand.MessageChunk:

Public Member Functions
def	__init__ (self, security_policy, body=b'', msg_type=MessageType.SecureMessage, chunk_type=ChunkType.Single)
def	__str__ (self)
def	encrypted_size (self, plain_size)
def	to_binary (self)

Static Public Member Functions
def	from_binary (security_policy, data)
def	from_header_and_body (security_policy, header, buf)
def	max_body_size (crypto, max_chunk_size)
def	message_to_chunks (security_policy, body, max_chunk_size, message_type=MessageType.SecureMessage, channel_id=1, request_id=1, token_id=1)

Public Attributes
	Body
	MessageHeader
	SecurityHeader
	SequenceHeader

Private Attributes
	_security_policy

Static Private Attributes
	__repr__ = __str__

Detailed Description

Message Chunk, as described in OPC UA specs Part 6, 6.7.2.

Definition at line 348 of file uaprotocol_hand.py.

Constructor & Destructor Documentation

def opcua.ua.uaprotocol_hand.MessageChunk.__init__	(		self,
			security_policy,
			body = b'',
			msg_type = MessageType.SecureMessage,
			chunk_type = ChunkType.Single
	)

Definition at line 353 of file uaprotocol_hand.py.

Member Function Documentation

def opcua.ua.uaprotocol_hand.MessageChunk.__str__

(

self

)

Definition at line 457 of file uaprotocol_hand.py.

def opcua.ua.uaprotocol_hand.MessageChunk.encrypted_size	(		self,
			plain_size
	)

Definition at line 397 of file uaprotocol_hand.py.

def opcua.ua.uaprotocol_hand.MessageChunk.from_binary (   security_policy,   data  )

static

Definition at line 366 of file uaprotocol_hand.py.

def opcua.ua.uaprotocol_hand.MessageChunk.from_header_and_body (   security_policy,   header,   buf  )

static

Definition at line 371 of file uaprotocol_hand.py.

def opcua.ua.uaprotocol_hand.MessageChunk.max_body_size (   crypto,   max_chunk_size  )

static

Definition at line 413 of file uaprotocol_hand.py.

def opcua.ua.uaprotocol_hand.MessageChunk.message_to_chunks (   security_policy,   body,   max_chunk_size,   message_type = MessageType.SecureMessage,   channel_id = 1,   request_id = 1,   token_id = 1  )

static

Pack message body (as binary string) into one or more chunks.
Size of each chunk will not exceed max_chunk_size.
Returns a list of MessageChunks. SequenceNumber is not initialized here,
it must be set by Secure Channel driver.

Definition at line 420 of file uaprotocol_hand.py.

def opcua.ua.uaprotocol_hand.MessageChunk.to_binary

(

self

)

Definition at line 403 of file uaprotocol_hand.py.

Member Data Documentation

opcua.ua.uaprotocol_hand.MessageChunk.__repr__ = __str__

staticprivate

Definition at line 461 of file uaprotocol_hand.py.

opcua.ua.uaprotocol_hand.MessageChunk._security_policy

private

Definition at line 363 of file uaprotocol_hand.py.

opcua.ua.uaprotocol_hand.MessageChunk.Body

Definition at line 362 of file uaprotocol_hand.py.

opcua.ua.uaprotocol_hand.MessageChunk.MessageHeader

Definition at line 354 of file uaprotocol_hand.py.

opcua.ua.uaprotocol_hand.MessageChunk.SecurityHeader

Definition at line 356 of file uaprotocol_hand.py.

opcua.ua.uaprotocol_hand.MessageChunk.SequenceHeader

Definition at line 361 of file uaprotocol_hand.py.

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The documentation for this class was generated from the following file:

• uaprotocol_hand.py