rajeshsubhankar · March 28, 2019 17:03 · Mar 28, 2019
diff --git a/sendRawTokenTransaction.js b/sendRawTokenTransaction.js
@@ -0,0 +1,71 @@
+const ethers = require('ethers');
+const BigNumber = require('bignumber.js');
+
+const provider = new ethers.providers.JsonRpcProvider('https://ropsten.infura.io/v2/INFURA_PROJECT_ID');
+const addressFrom = 'SENDER_ADDRESS';
+const privateKey = 'SENDER_PRIVATE_KEY';
+const wallet = new ethers.Wallet(privateKey, provider);
+
+const addressTo = 'RECEIVER_ADDRESS';
+
+// token details
+const tokenAddress = 'TOKEN_ADDRESS';
+const amount = 0.5;
+const tokenDecimal = 18; // token decimal
+
+/** Create token transfer value as (10 ** token_decimal) * user_supplied_value
+ * @dev BigNumber instead of BN to handle decimal user_supplied_value
+ */
+const base = new BigNumber(10);
+const valueToTransfer = base.pow(tokenDecimal)
+  .times(amount);
+/* Create token transfer ABI encoded data
+ * `transfer()` method signature at https://eips.ethereum.org/EIPS/eip-20
+ * ABI encoding ruleset at https://solidity.readthedocs.io/en/develop/abi-spec.html
+ */
+var abi = [{
+  "constant": false,
+  "inputs": [{
+    "name": "_to",
+    "type": "address"
+  }, {
+    "name": "_value",
+    "type": "uint256"
+  }],
+  "name": "transfer",
+  "outputs": [{
+    "name": "",
+    "type": "bool"
+  }],
+  "payable": false,
+  "stateMutability": "nonpayable",
+  "type": "function"
+}];
+const iface = new ethers.utils.Interface(abi);
+const rawData = iface.functions.transfer.encode([addressTo, valueToTransfer.toString()]);
+
+provider.getTransactionCount(addressFrom)
+  .then((txCount) => {
+    // construct the transaction data
+    const txData = {
+       nonce: txCount,
+       gasLimit: 250000,
+       gasPrice: 10e9, // 10 Gwei
+       to: tokenAddress, // token contract address
+       value: ethers.constants.HexZero, // no ether value
+       data: rawData,
+     }
+    const serializedTx = ethers.utils.serializeTransaction(txData);
+    //console.log('serialized Tx: ', serializedTx);
+    //console.log('parsed serialized tx: ', ethers.utils.parseTransaction(serializedTx));
+    // parse unsigned serialized transaction and sign it
+    wallet.sign(ethers.utils.parseTransaction(serializedTx))
+      .then((signedSerializedTx) => {
+        //console.log('signed serialized tx: ', signedSerializedTx);
+        // broadcast signed serialized tx
+        provider.sendTransaction(signedSerializedTx)
+          .then((response) => {
+            console.log('tx response: ', response);
+          });
+      });
+  });