Module util 

MQTT Serialization Utilities

This module provides helper functions for reading and writing MQTT-specific data types from and to byte buffers, such as variable-byte integers and length-prefixed strings.

Functions

read_utf8_string

Reads a UTF-8 encoded string (prefixed with a 2-byte length) from the buffer.

read_variable_byte_integer

Reads a variable-byte integer from the buffer, advancing the cursor.

write_utf8_string

Writes a UTF-8 encoded string (prefixed with a 2-byte length) to the buffer.

write_variable_byte_integer

Writes a variable-byte integer to the buffer, advancing the cursor.

write_variable_byte_integer_len

A simplified version of write_variable_byte_integer for external use that returns the byte count.