Data slice parameters for getAccountInfo

[leofisG]

According to the JSON RPC documentation here, it has an optional parameter dataSlice however this doesn't seem to be present in the web3 client. So I am wondering is this not implemented?

If so, how do we send the request with the dataSlice parameter using curl?

I am looking for something similar to:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getAccountInfo", "params":["vines1vzrYbzLMRdu58ou5XTby4qAqVRLmqo36NKPTg",{"encoding": "base58"}]}' http://localhost:8899

Thanks!

[CriesofCarrots]

Here's a working example on mainnet-beta using dataSlice:

// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getAccountInfo", "params":["Memo1UhkJRfHyvLMcVucJwxXeuD728EqVDDwQDxFMNo",{"encoding":"base64", "dataSlice":{"offset":0,"length":8}}]}' api.mainnet-beta.solana.com

// Response
{"jsonrpc":"2.0","result":{"context":{"slot":31173838},"value":{"data":["f0VMRgIBAQA=","base64"],"executable":true,"lamports":121159680,"owner":"BPFLoader1111111111111111111111111111111111","rentEpoch":41}},"id":1}

I discovered there's a small bug using base58 encoding; if the account data is larger than 128 bytes, the request won't return, even if the requested slice is smaller than 128 bytes. But should work for small accounts, or base64 works for all accounts.

[steveluscher]

This was added in solana-labs/solana#28389.

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