Function paho_mqtt_sys::MQTTProperties_write

pub unsafe extern "C" fn MQTTProperties_write(
    pptr: *mut *mut c_char, 
    properties: *const MQTTProperties
) -> c_int

Serialize the given property list to a character buffer, e.g. for writing to the network. @param pptr pointer to the buffer - move the pointer as we add data @param properties pointer to the property list, can be NULL @return whether the write succeeded or not: number of bytes written, or < 0 on failure.