get block or transaction data via rpc api when in the ibd process #27388

Please describe the feature you'd like to see added.

Can I get the block or transaction data via the rpc api when the bitcoin core is still in the ibd process that has not been finished? For example , can I get the downloaded block data via calling the getblock api while the client is still in the ibd process?

Is your feature related to a problem, if so please describe it.

No response

Describe the solution you'd like

No response

Describe any alternatives you've considered

No response

Please leave any additional context

No response

Yes this should work, did you try it? Here's example commands starting bitcoind in a fresh datadir with -txindex:

--> bitcoin-cli -datadir=/home/pinheadmz/bcd-test getblockcount
400

--> bitcoin-cli -datadir=/home/pinheadmz/bcd-test getblock 000000007bc154e0fa7ea32218a72fe2c1bb9f86cf8c9ebf9a715ed27fdb229a
{
  "hash": "000000007bc154e0fa7ea32218a72fe2c1bb9f86cf8c9ebf9a715ed27fdb229a",
  "confirmations": 9282,
  "strippedsize": 215,
  "size": 215,
  "weight": 860,
  "height": 100,
  "version": 1,
  "versionHex": "00000001",
  "merkleroot": "2d05f0c9c3e1c226e63b5fac240137687544cf631cd616fd34fd188fc9020866",
  "tx": [
    "2d05f0c9c3e1c226e63b5fac240137687544cf631cd616fd34fd188fc9020866"
  ],
  "time": 1231660825,
  "mediantime": 1231656204,
  "nonce": 1573057331,
  "bits": "1d00ffff",
  "difficulty": 1,
  "chainwork": "0000000000000000000000000000000000000000000000000000006500650065",
  "nTx": 1,
  "previousblockhash": "00000000cd9b12643e6854cb25939b39cd7a1ad0af31a9bd8b2efe67854b1995",
  "nextblockhash": "00000000b69bd8e4dc60580117617a466d5c76ada85fb7b87e9baea01f9d9984"
}

--> bitcoin-cli -datadir=/home/pinheadmz/bcd-test getrawtransaction 2d05f0c9c3e1c226e63b5fac240137687
544cf631cd616fd34fd188fc9020866
01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff0704ffff001d014dffffffff0100f2052a01000000434104e70a02f5af48a1989bf630d92523c9d14c45c75f7d1b998e962bff6ff9995fc5bdb44f1793b37495d80324acba7c8f537caaf8432b8d47987313060cc82d8a93ac00000000

--> bitcoin-cli -datadir=/home/pinheadmz/bcd-test getblockcount
36881

Yes this should work, did you try it? Here's example commands starting bitcoind in a fresh datadir with -txindex:

--> bitcoin-cli -datadir=/home/pinheadmz/bcd-test getblockcount
400

--> bitcoin-cli -datadir=/home/pinheadmz/bcd-test getblock 000000007bc154e0fa7ea32218a72fe2c1bb9f86cf8c9ebf9a715ed27fdb229a
{
  "hash": "000000007bc154e0fa7ea32218a72fe2c1bb9f86cf8c9ebf9a715ed27fdb229a",
  "confirmations": 9282,
  "strippedsize": 215,
  "size": 215,
  "weight": 860,
  "height": 100,
  "version": 1,
  "versionHex": "00000001",
  "merkleroot": "2d05f0c9c3e1c226e63b5fac240137687544cf631cd616fd34fd188fc9020866",
  "tx": [
    "2d05f0c9c3e1c226e63b5fac240137687544cf631cd616fd34fd188fc9020866"
  ],
  "time": 1231660825,
  "mediantime": 1231656204,
  "nonce": 1573057331,
  "bits": "1d00ffff",
  "difficulty": 1,
  "chainwork": "0000000000000000000000000000000000000000000000000000006500650065",
  "nTx": 1,
  "previousblockhash": "00000000cd9b12643e6854cb25939b39cd7a1ad0af31a9bd8b2efe67854b1995",
  "nextblockhash": "00000000b69bd8e4dc60580117617a466d5c76ada85fb7b87e9baea01f9d9984"
}

--> bitcoin-cli -datadir=/home/pinheadmz/bcd-test getrawtransaction 2d05f0c9c3e1c226e63b5fac240137687
544cf631cd616fd34fd188fc9020866
01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff0704ffff001d014dffffffff0100f2052a01000000434104e70a02f5af48a1989bf630d92523c9d14c45c75f7d1b998e962bff6ff9995fc5bdb44f1793b37495d80324acba7c8f537caaf8432b8d47987313060cc82d8a93ac00000000

--> bitcoin-cli -datadir=/home/pinheadmz/bcd-test getblockcount
36881

thanks, you mean that I can get the downloaded block and tx data via rpc api even though the bitcoin core is still in the ibd process and has not downloaded the full ledger data in the mainnet , right?

Yes with the rpc you can access anything that you have already downloaded