No such file or directory: './pairings/accessory-secret'

[joni15]

Hello,

when i run the docker container on rpi 4 :

[....] Starting Avahi mDNS/DNS-SD Daemon: avahi-daemo[.ok Traceback (most recent call last): File "ap2-receiver.py", line 190, in LTPK = LTPK() File "ap2-receiver.py", line 164, in init announce_id, self.ltpk = Hap(PI).configure() File "/airplay2/ap2/pairing/hap.py", line 170, in init with open("./pairings/accessory-secret", "wb") as secret_file: FileNotFoundError: [Errno 2] No such file or directory: './pairings/accessory-secret'

[systemcrash]

Interesting. It's attempting to write the file to that path. Permissions to be able to write to that folder pairings and that file in the folder are necessary. Can you touch the file and create an empty binary file? Does it work then?

[thebeater]

Hi systemcrash,

I have the same error and after touch ./pairings/accessory-secret the file is generated but the error is always:

docker run -it --rm --device /dev/snd --net host invano/ap2-receiver [ ok ] Starting Avahi mDNS/DNS-SD Daemon: avahi-daemon. Traceback (most recent call last): File "ap2-receiver.py", line 190, in LTPK = LTPK() File "ap2-receiver.py", line 164, in init announce_id, self.ltpk = Hap(PI).configure() File "/airplay2/ap2/pairing/hap.py", line 170, in init with open("./pairings/accessory-secret", "wb") as secret_file: FileNotFoundError: [Errno 2] No such file or directory: './pairings/accessory-secret'

[systemcrash]

OK - then I think the docker image needs extending slightly to understand that the pairings dir should be mapped. Think you could pull together a docker-compose.yaml file with that in?

[thebeater]

then I think the docker image needs extending slightly to understand that the pairings dir should be mapped.

I‘m not very familiar with docker. If you can guide me a little bit this should be no Problem…

[systemcrash]

I learned a ton about docker from google and stack overflow. 😎 Try something like this after ports:

   volumes:
     - ./pairings:/pairings

[Shaquu]

For me, compose alone did not solve the issue. I did a "fix" in code, though.

        if not path.exists('./pairings/accessory-secret'):
            accessory_secret = random(nacl.bindings.crypto_sign_SEEDBYTES)
            try:
                with open("./pairings/accessory-secret", "wb") as secret_file:
                    secret_file.write(accessory_secret)
            except FileNotFoundError:
                print("Could not open './pairings/accessory-secret'")
                print("accessory_secret will not be persisted")
        else:
            with open("./pairings/accessory-secret", "rb") as secret_file:
                accessory_secret = secret_file.read()
            self.accessory_ltsk = nacl.signing.SigningKey(accessory_secret)

[joni15]

Thank you for your help. I will test as soon as possible. I'm on holiday and have little time to play with my raspberry pi 😅

[systemcrash]

Can one of you try with the docker-compose.yaml file with e.g.:

version: '3.8'
services:
 ap2:
   restart: unless-stopped
   network_mode: host
   build: .
   # ports:
     # - "7000:7000"
     # - "10000-10100:10000-10100/udp"
   volumes:
     - ./pairings:/airplay2/pairings/
   devices:
     - "/dev/snd"
   environment: # All variables are optional.
     - AP2HOSTNAME=Airplay2
     - AP2IFACE=eth0

[systemcrash]

See 2aa2613

[Shaquu]

Thanks, as you speak about docker love. @systemcrash would you mind optimizing build? Some steps are not cached, which makes rebuild very slow.

[systemcrash]

Use docker-compose or avoid the build step.