Transport for speculos emulator hw-transport-speculos

[AndreyBronin]

Hello

I want to make some integration tests for my WebWallet app and Ledger Nano S and run it on CI.

Headless speculos emulator is good tool for this, but I need special transport for sending APDU codes from web app.

[gre]

@greenknot can you share what was your setup so far? I believe it was working with some python script and the proxy transport?
We could definitely write a more dedicated tool.

[greenknot]

Here is the command-line that I used in conjunction with speculos:

./tools/ledger-live-http-proxy.py &
DEBUG_COMM_HTTP_PROXY=http://127.0.0.1:9998 ledger-live getAddress -c btc --path "m/49'/0'/0'/0/0" --derivationMode segwit

• https://github.com/LedgerHQ/speculos/blob/master/tools/ledger-live-http-proxy.py
• https://github.com/LedgerHQ/speculos/blob/master/doc/usage.md#ledger-live-common

[AndreyBronin]

I also find websockify proxy in run.sh which runs in Dockerfile. I think it's good solution for me to use speculos with websockify proxy and hw-transport-http.

Unfortunately Dockerfile is broken, I'll try to fix it and test

[gre]

@AndreyBronin i've just wrote a tcp transport that works great as shown on the PR description. I'll iterate with the team behind speculos to see if we can simplify to the bare minimum what the docker is about because essentially we just need to be able run ./speculos.py directly, provide some tcp ports and connect to it, without need to have extra proxy complexity