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Solana: How to get tx signature(s) when using send_and_confirm_transactions_in_parallel()

Published by Terlumun Aondover on February 13th, 2025.

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Here is an article on how to get transaction signatures using send_and_confirm_transactions_in_parallel() in Solana:

Getting Transaction Signatures Using send_and_confirm_transactions_in_parallel()

In your latest posts, you successfully implemented send_and_confirm_transactions_in_parallel() using the TPU client. However, when you call this function, it does not automatically generate transaction signatures for each batch of transactions.

If you need to get transaction signature(s) after you send and confirm transactions in parallel, make sure your TPU client is configured properly and that you handle any errors or exceptions properly.

Problem with send_and_confirm_transactions_in_parallel()

send_and_confirm_transactions_in_parallel() is an asynchronous function that sends multiple transactions at once using the TPUClient. While this method can be efficient, it does not automatically generate transaction signatures. Instead, each transaction will have its own signature when sent and confirmed.

Solution: Obtain transaction signatures manually

Solana: How to get tx signature(s) when using send_and_confirm_transactions_in_parallel()

To obtain transaction signatures manually, you will need to:

Send each transaction individually using TPUClient.

Wait for each transaction to be confirmed before generating a signature.

If necessary, save or print the generated signatures.

Here is an example of how you can implement this in Python:


from solana.publickey import PublicKey
import time
def get_signature(tx_id, account_key):

Send the transaction using TPUClient and wait for it to be confirmed
client = TPUClient()
tx_response = client.send_and_confirm_transactions_in_parallel(
[
{"id": tx_id, "account_key": account_key},
],
timeout=60 
Wait up to 1 minute before generating the signature
)
if not tx_response:
return None

Generate the transaction signature
signature = client.get_transaction_signature(tx_id)

Return the generated signature as a string
return str(signature)

Usage example:
tx_id = "some_tx_id"
account_key = "some_account_key"
signature = get_signature(tx_id, account_key)
print(f"Transaction signature for {tx_id}: {signature}")

Tips and Variations

Be sure to handle any exceptions that may occur while processing the transaction.

If signatures need to be generated in bulk, consider using a loop to send transactions and wait for confirmations before generating signatures.

You can also use the TPUClient.get_transaction_signatures()' method to get the generated signatures directly from the server.

With these steps and tips, you should be able to get transaction signatures usingsend_and_confirm_transactions_in_parallel()’ with your Solana application.

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