How can I download binary data from RAM ?

[peter-tue]

Hello,

I found many examples and implemented a download for SD-card files, but would like to download (get) binary data without a file just from ESP32 RAM.
How can this be implemented?

Did I miss an example that shows this ?

Thanks,
Peter

[peter-tue]

Hello again,

@mathieucarbou
is there really no way to download data directly from RAM ?
When a file is downloaded the data from this file must be in RAM to be accessed. So there should be a method to just download these data without the detour through a file structure.

Can anyone please help me?

[mathieucarbou]

there is always a buffering, at least at the boton network layer (asynctcp and lwip).
you cannot serve directly a file from FS

espasyncs let's you control the chunk buffer through to serve a file. There are exampels in the project.

[peter-tue]

Thanks,

I'll search through the examples again. Can you please tell me which you mean to directly download binary data without going 'through' a file?