Possibility to change tx_payload_buffer_size

[Kacp3r3]

Maximum size of the tx paylod buffer was fixed value, there should be possibility to extend this value by user, so i added a new member variable with according setter function.

[CLAassistant]

All committers have signed the CLA.

[JDuchniewicz]

This gave me a headache, and I had to change the define manually because Arduino uses old version of this library.

[krzysztofkrzeslak]

This gave me a headache, and I had to change the define manually because Arduino uses old version of this library.

@aentinger maybe it's time to consider merging it, as it seems like a bug and I think we were not the only one who came across this issue. At least it should be mentioned somewhere that if long MQTT messages are cut/truncated then you should check the value of this definition, as this is behavior that is being observed in effect. Thanks!

[aentinger]

I will merge this, if @Kacp3r3 drops 33314086e4501d24f91e1202df91bf3ccb6249af from this patch.

[Kacp3r3]

As you wish

[github-actions[bot]]

Memory usage change @ 79f512ff77b32767c267c98cb304d04e452fe167

Board	flash	%	RAM for global variables	%
arduino:megaavr:uno2018	:small_red_triangle: +8 - +8	+0.02 - +0.02	:small_red_triangle: +2 - +2	+0.03 - +0.03
arduino:samd:mkr1000	:small_red_triangle: +8 - +8	0.0 - 0.0	:small_red_triangle: +4 - +4	+0.01 - +0.01
arduino:samd:mkrwifi1010	:small_red_triangle: 0 - +8	0.0 - 0.0	:small_red_triangle: +4 - +4	+0.01 - +0.01
arduino:samd:nano_33_iot	:small_red_triangle: +8 - +8	0.0 - 0.0	:small_red_triangle: +4 - +4	+0.01 - +0.01

Click for full report table

Board|examples/WiFiAdvancedCallback
flash|%|examples/WiFiAdvancedCallback
RAM for global variables|%|examples/WiFiEcho
flash|%|examples/WiFiEcho
RAM for global variables|%|examples/WiFiEchoCallback
flash|%|examples/WiFiEchoCallback
RAM for global variables|%|examples/WiFiSimpleReceive
flash|%|examples/WiFiSimpleReceive
RAM for global variables|%|examples/WiFiSimpleReceiveCallback
flash|%|examples/WiFiSimpleReceiveCallback
RAM for global variables|%|examples/WiFiSimpleSender
flash|%|examples/WiFiSimpleSender
RAM for global variables|% -|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|- arduino:megaavr:uno2018|8|0.02|2|0.03|8|0.02|2|0.03|8|0.02|2|0.03|8|0.02|2|0.03|8|0.02|2|0.03|8|0.02|2|0.03 arduino:samd:mkr1000|8|0.0|4|0.01|8|0.0|4|0.01|8|0.0|4|0.01|8|0.0|4|0.01|8|0.0|4|0.01|8|0.0|4|0.01 arduino:samd:mkrwifi1010|0|0.0|4|0.01|8|0.0|4|0.01|8|0.0|4|0.01|0|0.0|4|0.01|0|0.0|4|0.01|8|0.0|4|0.01 arduino:samd:nano_33_iot|8|0.0|4|0.01|8|0.0|4|0.01|8|0.0|4|0.01|8|0.0|4|0.01|8|0.0|4|0.01|8|0.0|4|0.01

Click for full report CSV

``` Board,examples/WiFiAdvancedCallback
flash,%,examples/WiFiAdvancedCallback
RAM for global variables,%,examples/WiFiEcho
flash,%,examples/WiFiEcho
RAM for global variables,%,examples/WiFiEchoCallback
flash,%,examples/WiFiEchoCallback
RAM for global variables,%,examples/WiFiSimpleReceive
flash,%,examples/WiFiSimpleReceive
RAM for global variables,%,examples/WiFiSimpleReceiveCallback
flash,%,examples/WiFiSimpleReceiveCallback
RAM for global variables,%,examples/WiFiSimpleSender
flash,%,examples/WiFiSimpleSender
RAM for global variables,% arduino:megaavr:uno2018,8,0.02,2,0.03,8,0.02,2,0.03,8,0.02,2,0.03,8,0.02,2,0.03,8,0.02,2,0.03,8,0.02,2,0.03 arduino:samd:mkr1000,8,0.0,4,0.01,8,0.0,4,0.01,8,0.0,4,0.01,8,0.0,4,0.01,8,0.0,4,0.01,8,0.0,4,0.01 arduino:samd:mkrwifi1010,0,0.0,4,0.01,8,0.0,4,0.01,8,0.0,4,0.01,0,0.0,4,0.01,0,0.0,4,0.01,8,0.0,4,0.01 arduino:samd:nano_33_iot,8,0.0,4,0.01,8,0.0,4,0.01,8,0.0,4,0.01,8,0.0,4,0.01,8,0.0,4,0.01,8,0.0,4,0.01 ```