Get actual gasPrice from transaction instead of setting default

packages/web3-wrapper/src/web3_wrapper.ts

@@ -14,6 +14,7 @@ import {
     Provider,
     RawLogEntry,
     TraceParams,
+    Transaction,
     TransactionReceipt,
     TransactionReceiptWithDecodedLogs,
     TransactionTrace,
@@ -220,6 +221,19 @@ export class Web3Wrapper {
         }
         return transactionReceipt;
     }
+    /**
+     * Retrieves the transaction data for a given transaction
+     * @param txHash Transaction hash
+     * @returns The raw transaction data
+     */
+    public async getTransactionByHashAsync(txHash: string): Promise<Transaction> {
+        assert.isHexString('txHash', txHash);
+        const transaction = await this._sendRawPayloadAsync<Transaction>({
+            method: 'eth_getTransactionByHash',
+            params: [txHash],
+        });
+        return transaction;
+    }
     /**
      * Retrieves an accounts Ether balance in wei
      * @param owner Account whose balance you wish to check