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MarshalX / atproto

The AT Protocol (🦋 Bluesky) SDK for Python 🐍
https://atproto.blue
MIT License
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decode_dag_multi does not decode fully #274

Closed azulika closed 6 months ago

azulika commented 6 months ago

Maybe related: https://github.com/MarshalX/atproto/issues/53

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from atproto_core.cbor import decode_dag_multi
dag = decode_dag_multi(data)

only decodes the first part

{'t': '#commit', 'op': 1}
MarshalX commented 6 months ago

tried via js @ipld/dag-cbor and got more details

throw new Error(`${decodeErrPrefix2} encountered invalid minor (${minor}) for major ${data[pos] >>> 5}`);

should not be related to issue no 53 because SDK changed lib for websocket. and the current _MAX_MESSAGE_SIZE_BYTES is 5mb

azulika commented 6 months ago

I see. Perhaps I should've chosen a different example.

import requests
from atproto_core.cbor import decode_dag_multi

url = "https://bsky.network/xrpc/com.atproto.sync.getRepo?did=did:plc:ewvi7nxzyoun6zhxrhs64oiz"
data = requests.get(url).content
dag = decode_dag_multi(data)
print(dag)

This only returns:

[26, {'version': 1, 'roots': ['bafyreig67suqxcebtiv453ujpveydtv4doolnebl5yfnqx54evlg6u3tn4']}, None, 1, 1]

Decoding the same PDS instance via js @ipld/dag-cbor works perfectly. Is decoding a bsky.social instance not supported in decode_dag_multi or am I missing something?

MarshalX commented 6 months ago

@azulika you are missing the difference between the CAR file and DAG-CBOR

the right code:

import requests
from atproto import CAR  # same as from atproto_core.car import CAR

url = "https://bsky.network/xrpc/com.atproto.sync.getRepo?did=did:plc:ewvi7nxzyoun6zhxrhs64oiz"
data = requests.get(url).content
car = CAR.from_bytes(data)
print(car.root)
print(car.blocks)
azulika commented 6 months ago

@MarshalX Thanks!