Escrow tutorials: Add conditional example & workaround for faucet tecDIR_FULL

_code-samples/escrow/js/send-conditional-escrow.js

@@ -0,0 +1,89 @@
+import xrpl from 'xrpl'
+import { PreimageSha256 } from 'five-bells-condition'
+import { randomBytes } from 'crypto'
+
+const client = new xrpl.Client('wss://s.altnet.rippletest.net:51233')
+await client.connect()
+
+console.log('Funding new wallet from faucet...')
+const { wallet } = await client.fundWallet()
+const destination_address = 'rPT1Sjq2YGrBMTttX4GZHjKu9dyfzbpAYe' // Testnet faucet
+// Alternative: Get another account to send the escrow to. Use this if you get
+// a tecDIR_FULL error trying to create escrows to the Testnet faucet.
+// const destination_address = (await client.fundWallet()).wallet.address
+
+// Create the crypto-condition for release ----------------------------------
+const preimage = randomBytes(32)
+const fulfillment = new PreimageSha256()
+fulfillment.setPreimage(preimage)
+const fulfillmentHex = fulfillment.serializeBinary().toString('hex').toUpperCase()
+const conditionHex = fulfillment.getConditionBinary().toString('hex').toUpperCase()
+console.log('Condition:', conditionHex)
+console.log('Fulfillment:', fulfillmentHex)
+
+// Set the escrow expiration ------------------------------------------------
+const cancelDelay = 300 // Seconds in the future when the escrow should expire
+const cancelAfter = new Date() // Current time
+cancelAfter.setSeconds(cancelAfter.getSeconds() + cancelDelay)
+console.log('This escrow will expire after:', cancelAfter)
+// Convert cancelAfter to seconds since the Ripple Epoch:
+const cancelAfterRippleTime = xrpl.isoTimeToRippleTime(cancelAfter.toISOString())
+
+// Send EscrowCreate transaction --------------------------------------------
+const escrowCreate = {
+  TransactionType: 'EscrowCreate',
+  Account: wallet.address,
+  Destination: destination_address,
+  Amount: '123456', // drops of XRP
+  Condition: conditionHex,
+  CancelAfter: cancelAfterRippleTime
+}
+xrpl.validate(escrowCreate)
+
+console.log('Signing and submitting the transaction:',
+  JSON.stringify(escrowCreate, null, 2))
+const response = await client.submitAndWait(escrowCreate, {
+  wallet,
+  autofill: true // Note: fee is higher based on condition size in bytes
+})
+
+// Check result of submitting -----------------------------------------------
+console.log(JSON.stringify(response.result, null, 2))
+const escrowCreateResultCode = response.result.meta.TransactionResult
+if (escrowCreateResultCode === 'tesSUCCESS') {
+  console.log('Escrow created successfully.')
+} else {
+  console.error(`EscrowCreate failed with code ${escrowCreateResultCode}.`)
+  process.exit(1)
+}
+
+// Save the sequence number so you can identify the escrow later.
+const escrowSeq = response.result.tx_json.Sequence
+console.log(`Escrow sequence is ${escrowSeq}.`)
+
+
+// Send EscrowFinish transaction --------------------------------------------
+const escrowFinish = {
+  TransactionType: 'EscrowFinish',
+  Account: wallet.address,
+  Owner: wallet.address,
+  OfferSequence: escrowSeq,
+  Condition: conditionHex,
+  Fulfillment: fulfillmentHex
+}
+xrpl.validate(escrowFinish)
+
+console.log('Signing and submitting the transaction:',
+  JSON.stringify(escrowFinish, null, 2))
+const response2 = await client.submitAndWait(escrowFinish, {
+  wallet,
+  autofill: true // Note: fee is higher based on fulfillment size in bytes
+})
+console.log(JSON.stringify(response2.result, null, 2))
+if (response2.result.meta.TransactionResult === 'tesSUCCESS') {
+  console.log('Escrow finished successfully.')
+} else {
+    console.log(`Failed with result code ${response2.result.meta.TransactionResult}`)
+}
+
+client.disconnect()

_code-samples/escrow/js/send-timed-escrow.js

@@ -5,6 +5,10 @@ await client.connect()
 
 console.log('Funding new wallet from faucet...')
 const { wallet } = await client.fundWallet()
+const destination_address = 'rPT1Sjq2YGrBMTttX4GZHjKu9dyfzbpAYe' // Testnet faucet
+// Alternative: Get another account to send the escrow to. Use this if you get
+// a tecDIR_FULL error trying to create escrows to the Testnet faucet.
+// const destination_address = (await client.fundWallet()).wallet.address
 
 // Set the escrow finish time -----------------------------------------------
 const delay = 30 // Seconds in the future when the escrow should mature
@@ -18,7 +22,7 @@ const finishAfterRippleTime = xrpl.isoTimeToRippleTime(finishAfter.toISOString()
 const escrowCreate = {
   TransactionType: 'EscrowCreate',
   Account: wallet.address,
-  Destination: 'rPT1Sjq2YGrBMTttX4GZHjKu9dyfzbpAYe', // Testnet faucet
+  Destination: destination_address,
   Amount: '123456', // drops of XRP
   FinishAfter: finishAfterRippleTime
 }
@@ -31,6 +35,13 @@ const response = await client.submitAndWait(escrowCreate, {
   autofill: true
 })
 console.log(JSON.stringify(response.result, null, 2))
+const escrowCreateResultCode = response.result.meta.TransactionResult
+if (escrowCreateResultCode === 'tesSUCCESS') {
+  console.log('Escrow created successfully.')
+} else {
+  console.error(`EscrowCreate failed with code ${escrowCreateResultCode}.`)
+  process.exit(1)
+}
 
 // Save the sequence number so you can identify the escrow later.
 const escrowSeq = response.result.tx_json.Sequence