Struct paho_mqtt_sys::MQTTAsync_createOptions

#[repr(C)]pub struct MQTTAsync_createOptions {
    pub struct_id: [c_char; 4],
    pub struct_version: c_int,
    pub sendWhileDisconnected: c_int,
    pub maxBufferedMessages: c_int,
    pub MQTTVersion: c_int,
}

Options for the ::MQTTAsync_createWithOptions call

Fields

struct_id: [c_char; 4]

The eyecatcher for this structure. must be MQCO.

struct_version: c_int

The version number of this structure. Must be 0 or 1 0 means no MQTTVersion

sendWhileDisconnected: c_int

Whether to allow messages to be sent when the client library is not connected.

maxBufferedMessages: c_int

the maximum number of messages allowed to be buffered while not connected.

MQTTVersion: c_int

Whether the MQTT version is 3.1, 3.1.1, or 5. To use V5, this must be set. MQTT V5 has to be chosen here, because during the create call the message persistence is initialized, and we want to know whether the format of any persisted messages is appropriate for the MQTT version we are going to connect with. Selecting 3.1 or 3.1.1 and attempting to read 5.0 persisted messages will result in an error on create.

Methods

impl MQTTAsync_createOptions

pub fn default_v5() -> MQTTAsync_createOptions

Trait Implementations

impl Clone for MQTTAsync_createOptions

fn clone(&self) -> MQTTAsync_createOptions

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for MQTTAsync_createOptions

impl Debug for MQTTAsync_createOptions

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Default for MQTTAsync_createOptions

fn default() -> MQTTAsync_createOptions

Returns the "default value" for a type.