Send a legacy transaction

Solana supports legacy transactions and versioned transactions. Unlike versioned transactions, legacy transactions cannot include Address Lookup Tables, so they are capped at 32 addresses per transaction.

After connecting to MetaMask, your dapp can prompt a user to sign and send one or more Solana legacy transactions. See the Solana documentation for more information about Solana transactions and how to create them.

Sign and send a transaction

After creating an unsigned legacy transaction, you can ask the user's MetaMask wallet to sign and send the transaction. Use the signAndSendTransaction method on the provider, or use signAndSendTransaction with the provider's request method. You can specify an optional SendOptions object as a second parameter for signAndSendTransaction, or as an options parameter when using request.

The method returns a promise for an object containing the signature.

• signAndSendTransaction
• request

const provider = getProvider(); // TO DO: replace with provider snippet
const network = '<NETWORK_URL>';
const connection = new Connection(network);
const transaction = new Transaction();
const { signature } = await provider.signAndSendTransaction(transaction);
await connection.getSignatureStatus(signature);

const provider = getProvider(); // TO DO: replace with provider snippet
const network = '<NETWORK_URL>';
const connection = new Connection(network);
const transaction = new Transaction();
const { signature } = await provider.request({
  method: 'signAndSendTransaction',
  params: {
    message: bs58.encode(transaction.serializeMessage()),
  },
});
await connection.getSignatureStatus(signature);

Sign and send multiple transactions

After creating multiple unsigned legacy transactions, you can ask the user's MetaMask wallet to sign and send all the transactions at once. Use the signAndSendAllTransactions method on the provider. This method accepts an array of Solana transactions, and an optional SendOptions object as a second parameter.

The method returns a promise for an object containing an array of signatures and the publicKey of the signer.

const provider = getProvider(); // TO DO: replace with provider snippet
const network = '<NETWORK_URL>';
const connection = new Connection(network);
const transactions = [new Transaction(), new Transaction()];
const { signatures, publicKey } = await provider.signAndSendAllTransactions(transactions);
await connection.getSignatureStatuses(signatures);

Next steps

To efficiently load more addresses in a single transaction, learn how to send a versioned transaction with Address Lookup Tables.