src/util/send-and-confirm-transaction.js
// @flow
import {Connection} from '../connection';
import {Transaction} from '../transaction';
import {sleep} from './sleep';
import type {Account} from '../account';
import type {TransactionSignature} from '../transaction';
const NUM_SEND_RETRIES = 10;
/**
* Sign, send and confirm a transaction.
*
* If `confirmations` count is not specified, wait for transaction to be finalized.
*/
export async function sendAndConfirmTransaction(
connection: Connection,
transaction: Transaction,
signers: Array<Account>,
confirmations: ?number,
): Promise<TransactionSignature> {
const start = Date.now();
let sendRetries = NUM_SEND_RETRIES;
for (;;) {
const signature = await connection.sendTransaction(transaction, signers);
const status = (
await connection.confirmTransaction(signature, confirmations)
).value;
if (status) {
if (status.err) {
throw new Error(
`Transaction ${signature} failed (${JSON.stringify(status)})`,
);
}
return signature;
}
if (--sendRetries <= 0) break;
// Retry in 0..100ms to try to avoid another AccountInUse collision
await sleep(Math.random() * 100);
}
const duration = (Date.now() - start) / 1000;
throw new Error(
`Transaction was not confirmed in ${duration.toFixed(
2,
)} seconds (${JSON.stringify(status)})`,
);
}