Struct opcua_client::prelude::Chunker

pub struct Chunker;

The Chunker is responsible for turning messages to chunks and chunks into messages.

Implementations

impl Chunker

pub fn validate_chunks(
    starting_sequence_number: u32,
    secure_channel: &SecureChannel,
    chunks: &[MessageChunk]
) -> Result<u32, StatusCode>

Ensure all of the supplied chunks have a valid secure channel id, and sequence numbers greater than the input sequence number and the preceding chunk

The function returns the last sequence number in the series for success, or BadSequenceNumberInvalid or BadSecureChannelIdInvalid for failure.

pub fn encode(
    sequence_number: u32,
    request_id: u32,
    max_message_size: usize,
    max_chunk_size: usize,
    secure_channel: &SecureChannel,
    supported_message: &SupportedMessage
) -> Result<Vec<MessageChunk, Global>, StatusCode>

Encodes a message using the supplied sequence number and secure channel info and emits the corresponding chunks

max_chunk_count refers to the maximum byte length that a chunk should not exceed or 0 for no limit max_message_size refers to the maximum byte length of a message or 0 for no limit

pub fn decode(
    chunks: &[MessageChunk],
    secure_channel: &SecureChannel,
    expected_node_id: Option<NodeId>
) -> Result<SupportedMessage, StatusCode>

Decodes a series of chunks to create a message. The message must be of a SupportedMessage type otherwise an error will occur.