[SDK] Python SDK connection to web socket endpoint

[enochSatis]

Environment

Mainnet, zksync2 v.0.4 in Python

Acknowledgement

• I understand that issues are expected with the Go SDK as they are being updated.

Issue Description

I would like to use the get_filter_logs method in web3. When I am using ZkSyncBuilder in zksync2, seems that the connection to the mainnet websocket endpoint is refused. When I am using the http endpoint, the SDK returns Filter not found error.

Expected Behavior

1. Can filter be constructed with an http endpoint in zkSync? I get {'code': -32602, 'message': 'Filter not found'} when I use the http endpoint.
2. Can zksync2 Python SDK connect to websocket endpoint? I get No connection adapters were found for 'wss://mainnet.era.zksync.io/ws' when I tried to connect to the websocket endpoint.

Seems the examples on gitHub are using http endpoints.

Code Example

from zksync2.module.module_builder import ZkSyncBuilder # zksync's provider
from zksync2.core.types import EthBlockParams # zksync requirement to get transaction count
from zksync2.manage_contracts.contract_encoder_base import ContractEncoder # zksync requirement to create contract
from pathlib import Path # zksync ABI file needs Path object instead of string input


node = ZkSyncBuilder.build("wss://mainnet.era.zksync.io/ws")
#node = ZkSyncBuilder.build("https://mainnet.era.zksync.io/")
contract_addr = "0x42dCF68ea66be9890BC233A5A7989Cc1b2845E3a"


event_filter = node.zksync.filter({"address": contract_addr})
log_res = node.zksync.get_filter_logs(event_filter.filter_id)
print(log_res)

Repo Link (Optional)

No response

[enochSatis]

Found a way to solve this issue.

I got the logs by calling tPOST API of the RPC node directly using method eth_getLogs.

"id": 2,
"jsonrpc": "2.0",
"method": "eth_getLogs",
"params": [{
    "address": address,
    "topics": [topicA, topicB]
    }]