Does WebREPL have input size limit?

[aivarannamaa]

I'm trying to implement WebREPL connection in Thonny IDE (https://github.com/thonny/thonny/blob/m ... nection.py). It is used in raw mode.

It is mostly working, but only when I submit small code snippets to the WebREPL. When submitting programs longer than 10-20 lines, I don't get the "OK" confirmation. Things start working again when I'm sending Ctrl+A.

I tried submitting in chunks and using delays between chunks but it did not help.

I tried Paste mode in official WebREPL client, and it seems to truncate pasted code. Is this a known bug or feature?

[Christian Walther]

It’s a known limitation: https://github.com/micropython/micropython/issues/2497

Also note that the current WebREPL protocol is not 8-bit-safe. That’s probably okay if you only transfer program text, but it won’t work for pushing arbitrary file content through the REPL stream (file transfer operations are not affected). I’ve been meaning to work on this, opening an issue and proposing solutions, but haven’t gotten anywhere yet.

[aivarannamaa]

Thank you, Christian! I'll continue the discussion under https://github.com/micropython/micropython/issues/2497