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Warn lastValidSlot with some terminology tweaks (#15081)

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* Warn lastValidSlot with some terminology tweaks

* Apply suggestions from code review

Co-authored-by: Tyera Eulberg <teulberg@gmail.com>

* Restore previous arrangment of slot def. and tweak upon it

* Apply suggestions from code review

Co-authored-by: Tyera Eulberg <teulberg@gmail.com>

Co-authored-by: Tyera Eulberg <teulberg@gmail.com>
This commit is contained in:
Ryo Onodera
2021-02-05 15:47:02 +09:00
committed by GitHub
parent e908a4b3fc
commit 85ffc8fa1c
3 changed files with 15 additions and 14 deletions
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15
docs/src/integrations/exchange.md
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@@ -468,18 +468,11 @@ curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "
#### Blockhash Expiration
When you request a recent blockhash for your withdrawal transaction using the
[`getFees` endpoint](developing/clients/jsonrpc-api.md#getfees) or `solana fees`, the
response will include the `lastValidSlot`, the last slot in which the blockhash
will be valid. You can check the cluster slot with a
[`getSlot` query](developing/clients/jsonrpc-api.md#getslot); once the cluster slot is
greater than `lastValidSlot`, the withdrawal transaction using that blockhash
should never succeed.
You can also doublecheck whether a particular blockhash is still valid by sending a
You can check whether a particular blockhash is still valid by sending a
[`getFeeCalculatorForBlockhash`](developing/clients/jsonrpc-api.md#getfeecalculatorforblockhash)
request with the blockhash as a parameter. If the response value is null, the
blockhash is expired, and the withdrawal transaction should never succeed.
request with the blockhash as a parameter. If the response value is `null`, the
blockhash is expired, and the withdrawal transaction using that blockhash should
never succeed.
### Validating User-supplied Account Addresses for Withdrawals