Support for JustWorks auth

[SzczurekYT]

Hi
I'm making an input device with trouble (something like a keyboard), so for that I want the device to just pair, and work. However it appears, that trouble does not support JustWorks auth, as tries to use it by setting IoCapabilities to NoInputNoOutput (the default) lead me to InvalidState errors. trouble also always sets the MITM Protection bit to on in AuthReq, with no way to disable that:

trouble/host/src/security_manager/types.rs

Line 423 in e658d7e

AuthReq((bonding as u8) | AUTH_REQ_MITM | AUTH_REQ_SECURE_CONNECTION)

and MITM protection can't be really achieved for a device with no input or output.

[ChocolateLoverRaj]

I'm pretty sure trouble does support JustWorks. In my use case I have the central with DisplayYesNo and peripheral with DisplayOnly and they bonded with JustWorks. I am new to using trouble but just sharing my experience since it might help you.

[SzczurekYT]

and peripheral with DisplayOnly

That's the difference, your peripherial has DisplayOnly, mine has NoInputNoOutput, this isn't the same.

[telent]

I'm in the same position. Being new to BLE it wasn't easy to work out what was going on