Lab 2

Author: StefH

Common/Solidity/templates/cs-service.ejs

@@ -38,17 +38,17 @@ namespace <%= locals.namespace ? namespace : 'DefaultNamespace' %>
             _contract = _web3.Eth.GetContract(ABI, address);
         }
 
-        public async Task<bool> ExecuteTransactionAsync(Func<I<%= capitalizeFirstLetter(getContractName()) %>Service, Task<string>> func, int timeoutInSeconds = 120)
+        public async Task<bool> ExecuteTransactionAsync(Func<I<%= capitalizeFirstLetter(getContractName()) %>Service, Task<string>> func, int timeoutInSeconds)
         {
+            var cts = new CancellationTokenSource(TimeSpan.FromSeconds(timeoutInSeconds));
+
             string transaction = await func(this);
             var receipt = await _web3.Eth.Transactions.GetTransactionReceipt.SendRequestAsync(transaction).ConfigureAwait(false);
 
-            int count = 0;
-            while (receipt == null && count < timeoutInSeconds * 2)
+            while (receipt == null && !cts.IsCancellationRequested)
             {
                 await Task.Delay(500);
                 receipt = await _web3.Eth.Transactions.GetTransactionReceipt.SendRequestAsync(transaction).ConfigureAwait(false);
-                count++;
             }
 
             return receipt != null;

Lab 2/ConsoleApp/Program.cs

@@ -1,8 +1,8 @@
 using System;
 using System.Threading.Tasks;
+using Lab2.SmartContracts;
 using Nethereum.Web3.Accounts.Managed;
 using Nethereum.Geth;
-using Lab2.SmartContracts;
 using Nethereum.Hex.HexTypes;
 
 namespace ConsoleApp
@@ -25,7 +25,7 @@ public static void Main(string[] args)
 
             Console.WriteLine(new string('-', 80));
 
-            TestService(senderAddress, password).Wait(60000);
+            TestService(senderAddress, password).Wait(1000 * 60 * 5); // Wait max 5 minutes
 
             Console.WriteLine(new string('-', 80));
         }
@@ -51,14 +51,14 @@ private static async Task TestService(string fromAddress, string password)
             ISimpleStorageContractService service = new SimpleStorageContractService(web3, contractAddress);
 
             // TODO 1:
-            // bool setNumberResult =  await service.ExecuteTransactionAsync((srv) => srv.SetNumberAsync(fromAddress, 500));
+            // bool setNumberResult = await service.ExecuteTransactionAsync(srv => srv.SetNumberAsync(fromAddress, 500));
 
             // TODO 2:
             // var getNumberValue = await service.GetNumberCallAsync(fromAddress);
             // Console.WriteLine($"The stored number value is '{getNumberValue}'.");
 
             // TODO 3:
-            // bool setStringResult =  await service.ExecuteTransactionAsync((srv) => srv.SetStringAsync(fromAddress, "mstack.nl test"));
+            // bool setStringResult =  await service.ExecuteTransactionAsync(srv => srv.SetStringAsync(fromAddress, "mstack.nl test"));
 
             // TODO 4:
             // var getStringValue = await service.GetStringCallAsync(fromAddress);

Lab 2/README.md

@@ -17,7 +17,7 @@ If you have some generic or detailed questions, please feel free to ask these at
 ## Folder structure
 
 - `Solidity`: folder for the SmartContracts written in Solidity and unit-tests written in javascript.
-- `ConsoleApp`: folder for the SmartContracts written in Solidity and unit-tests written in javascript.
+- `ConsoleApp`: folder for the ConsoleApp (C#).
 
 ## Details