librustzcash fails to sync account with birthday set to sapling activation height

[AArnott]

After I create an account with a birthday height set to exactly the sapling activation height (419200) or +1 (419201), sync fails with the following error:

status: Unknown, message: "zcashd did not return treestate", details: [], metadata: MetadataMap { headers: {"content-type": "application/grpc"} }

The viewing key I used in the test was as follows, but I don't think that's relevant:

zxviews1q0duytgcqqqqpqre26wkl45gvwwwd706xw608hucmvfalr759ejwf7qshjf5r9aa7323zulvz6plhttp5mltqcgs9t039cx2d09mgq05ts63n8u35hyv6h9nc9ctqqtue2u7cer2mqegunuulq2luhq3ywjcz35yyljewa4mgkgjzyfwh6fr6jd0dzd44ghk0nxdv2hnv4j5nxfwv24rwdmgllhe0p8568sgqt9ckt02v2kxf5ahtql6s0ltjpkckw8gtymxtxuu9gcr0swvz.

librustzcash version: 5a2a670

[AArnott]

I feel like this was already filed and even fixed in the past, but I cannot find the issue for it. But as my version of librustzcash is relatively new (June 12, 2024), it surely would have the fix if one had been made from an earlier report that I was involved in.

[conradoplg]

Isn't this https://discord.com/channels/809218587167293450/809251029673312267/1233989754014531644?

Which lightwalletd server are you using? This happens if it's using a Zebra release prior to 1.8.0.

[AArnott]

Ah, thank you. I just couldn't find it anywhere. I guess this is a duplicate of ZcashFoundation/zebra#8471.

I'm using my own lightwallet server, which runs against the latest zebra release:

latest: Pulling from zfnd/zebra
Digest: sha256:67d1b09722023a092b4235b700b3448902e45bb68e12e813f30ebf8c672cc9c4
Status: Image is up to date for zfnd/zebra:latest
docker.io/zfnd/zebra:latest

Could this be an issue with a database that was originally created with an older zebra, such that I need to recreate it completely?

[conradoplg]

Could this be an issue with a database that was originally created with an older zebra, such that I need to recreate it completely?

It should not be the database, since the change was implemented by serializing the response differently.

I tested with the same image you mentioned (67d1b09722023a092b4235b700b3448902e45bb68e12e813f30ebf8c672cc9c4) and it seems to be working:

curl --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "z_gettreestate", "params": ["419200"] }' -H 'Content-Type: application/json' http://127.0.0.1:8232
{"result":{"hash":"00000000025a57200d898ac7f21e26bf29028bbe96ec46e05b2c17cc9db9e4f3","height":419200,"time":1540779337,"sapling":{"commitments":{"finalState":"000000"}}},"id":"curltest"}

I'm not sure what is happening. My only suggestion is double-checking to see if you are really connecting to your own zebra-backed lightwalletd server.