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content/_code-samples/rippleapi_quickstart/submit-and-verify.js

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+'use strict';
+/* import RippleAPI and support libraries */
+const RippleAPI = require('ripple-lib').RippleAPI;
+const assert = require('assert');
+
+/* Credentials of the account placing the order */
+const myAddr = 'rf1BiGeXwwQoi8Z2ueFYTEXSwuJYfV2Jpn';
+const mySecret = 's████████████████████████████';
+
+/* Define the order to place here */
+const myOrder = {
+  'direction': 'buy',
+  'quantity': {
+    'currency': 'FOO',
+    'counterparty': 'rUpy3eEg8rqjqfUoLeBnZkscbKbFsKXC3v',
+    'value': '100'
+  },
+  'totalPrice': {
+    'currency': 'XRP',
+    'value': '1000'
+  }
+};
+
+/* Milliseconds to wait between checks for a new ledger. */
+const INTERVAL = 1000;
+/* Instantiate RippleAPI. Uses s2 (full history server) */
+const api = new RippleAPI({server: 'wss://s2.ripple.com'});
+/* Number of ledgers to check for valid transaction before failing */
+const ledgerOffset = 5;
+const myInstructions = {maxLedgerVersionOffset: ledgerOffset};
+
+
+/* Verify a transaction is in a validated XRP Ledger version */
+function verifyTransaction(hash, options) {
+  console.log('Verifing Transaction');
+  return api.getTransaction(hash, options).then(data => {
+    console.log('Final Result: ', data.outcome.result);
+    console.log('Validated in Ledger: ', data.outcome.ledgerVersion);
+    console.log('Sequence: ', data.sequence);
+    return data.outcome.result === 'tesSUCCESS';
+  }).catch(error => {
+    /* If transaction not in latest validated ledger,
+       try again until max ledger hit */
+    if (error instanceof api.errors.PendingLedgerVersionError) {
+      return new Promise((resolve, reject) => {
+        setTimeout(() => verifyTransaction(hash, options)
+		.then(resolve, reject), INTERVAL);
+      });
+    }
+    return error;
+  });
+}
+
+
+/* Function to prepare, sign, and submit a transaction to the XRP Ledger. */
+function submitTransaction(lastClosedLedgerVersion, prepared, secret) {
+  const signedData = api.sign(prepared.txJSON, secret);
+  return api.submit(signedData.signedTransaction).then(data => {
+    console.log('Tentative Result: ', data.resultCode);
+    console.log('Tentative Message: ', data.resultMessage);
+    /* If transaction was not successfully submitted throw error */
+    assert.strictEqual(data.resultCode, 'tesSUCCESS');
+    /* 'tesSUCCESS' means the transaction is being considered for the next ledger, and requires validation. */
+
+    /* If successfully submitted, begin validation workflow */
+    const options = {
+      minLedgerVersion: lastClosedLedgerVersion,
+      maxLedgerVersion: prepared.instructions.maxLedgerVersion
+    };
+    return new Promise((resolve, reject) => {
+      setTimeout(() => verifyTransaction(signedData.id, options)
+	.then(resolve, reject), INTERVAL);
+    });
+  });
+}
+
+
+api.connect().then(() => {
+  console.log('Connected');
+  return api.prepareOrder(myAddr, myOrder, myInstructions);
+}).then(prepared => {
+  console.log('Order Prepared');
+  return api.getLedger().then(ledger => {
+    console.log('Current Ledger', ledger.ledgerVersion);
+    return submitTransaction(ledger.ledgerVersion, prepared, mySecret);
+  });
+}).then(() => {
+  api.disconnect().then(() => {
+    console.log('api disconnected');
+    process.exit();
+  });
+}).catch(console.error);