1.7 KiB
1.7 KiB
tag, type, title
| tag | type | title |
|---|---|---|
| docs | other | Configuration Options |
The following configuration options can be used to configure the library.
They are contained in PubSubClient.h.
MQTT_MAX_PACKET_SIZE- Sets the largest packet size, in bytes, the client will handle. Any
packet received that exceeds this size will be ignored.
This value can be overridden by calling
setBufferSize(size).Default: 128 bytes
MQTT_KEEPALIVE- Sets the keepalive interval, in seconds, the client will use. This
is used to maintain the connection when no other packets are being
sent or received.
This value can be overridden by calling
setKeepAlive(keepAlive).Default: 15 seconds
MQTT_VERSION- Sets the version of the MQTT protocol to use.
Default: MQTT 3.1.1
MQTT_MAX_TRANSFER_SIZE- Sets the maximum number of bytes passed to the network client in each
write call. Some hardware has a limit to how much data can be passed
to them in one go, such as the Arduino Wifi Shield.
Default: undefined (complete packet passed in each write call)
MQTT_SOCKET_TIMEOUT- Sets the timeout when reading from the network. This also applies as
the timeout for calls to
connect.This value can be overridden by calling
setSocketTimeout(timeout).Default: 15 seconds