public override async Task <string> ExecuteAsync(IClient client)
{
/* This is the example contract containing an event raised every time we call multiply
* contract test {
*
* event Multiplied(uint indexed a, address sender);
*
* function multiply(uint a) returns(uint d)
* {
* Multiplied(a, msg.sender);
* return a * 7;
*
* }
*
* }*/
//The contract byte code already compiled
var contractByteCode =
"606060405260c08060106000396000f360606040526000357c010000000000000000000000000000000000000000000000000000000090048063c6888fa1146037576035565b005b604b60048080359060200190919050506061565b6040518082815260200191505060405180910390f35b6000817f10f82b5dc139f3677a16d7bfb70c65252e78143313768d2c52e07db775e1c7ab33604051808273ffffffffffffffffffffffffffffffffffffffff16815260200191505060405180910390a260078202905060bb565b91905056";
var minerStart = new MinerStart(client);
var minerStartResult = await minerStart.SendRequestAsync();
//Create a new Eth Send Transanction RPC Handler
//Create the transaction input for the new contract
//On transaction input the compiled contract is the Data, together with our sender address
var transactionInput = new TransactionInput();
transactionInput.Data = contractByteCode;
transactionInput.From = "0x12890D2cce102216644c59daE5baed380d84830c";
// retrieve the transaction hash, as we need to get a transaction sreceipt with the contract address
var transactionHash =
await new PersonalSignAndSendTransaction(client).SendRequestAsync(transactionInput, "password");
//the contract should be mining now
//Get the transaction receipt using the transactionHash
var ethGetTransactionReceipt = new EthGetTransactionReceipt(client);
TransactionReceipt receipt = null;
//wait for the contract to be mined to the address
while (receipt == null)
{
receipt = await ethGetTransactionReceipt.SendRequestAsync(transactionHash);
}
//sha3 the event call, we can use this to validate our topics
var eventCallSh3 =
await new Web3Sha3(client).SendRequestAsync(new HexUTF8String("Multiplied(uint256,address)"));
//create a filter
//just listen to anything no more filter topics (ie int indexed number)
var ethFilterInput = new NewFilterInput();
ethFilterInput.FromBlock.SetValue(receipt.BlockNumber);
ethFilterInput.ToBlock = BlockParameter.CreateLatest();
ethFilterInput.Address = new[] { receipt.ContractAddress };
//no topics
//ethFilterInput.Topics = new object[]{};
var newEthFilter = new EthNewFilter(client);
var filterId = await newEthFilter.SendRequestAsync(ethFilterInput);
//create a transaction which will raise the event
await SendTransaction(client, transactionInput.From, receipt.ContractAddress, "password");
//get filter changes
var ethGetFilterChangesForEthNewFilter = new EthGetFilterChangesForEthNewFilter(client);
FilterLog[] logs = null;
while (logs == null || logs.Length < 1)
{
//Get the filter changes logs
logs = await ethGetFilterChangesForEthNewFilter.SendRequestAsync(filterId);
if (logs.Length > 0)
{
var sb = new StringBuilder();
sb.AppendLine("Topic 0: " + logs[0].Topics[0] +
" should be the same as the SH3 encoded event signature " + eventCallSh3);
Assert.Equal(logs[0].Topics[0], eventCallSh3);
sb.AppendLine("Topic 1: " + logs[0].Topics[1] + " should be 69 hex 0x45, padded");
sb.AppendLine("Data " + logs[0].Data + " should be the same as the address padded 32 bytes " +
transactionInput.From);
return(sb.ToString());
}
}
var minerStop = new MinerStop(client);
var minerStopResult = await minerStop.SendRequestAsync();
throw new Exception("Execution failed");
}
public override async Task <bool> ExecuteAsync(IClient client)
{
var minerStart = new MinerStart(client);
return(await minerStart.SendRequestAsync());
}
public override async Task <string> ExecuteAsync(IClient client)
{
//The compiled solidity contract to be deployed
//contract test { function multiply(uint a) returns(uint d) { return a * 7; } }
var contractByteCode =
"0x606060405260728060106000396000f360606040526000357c010000000000000000000000000000000000000000000000000000000090048063c6888fa1146037576035565b005b604b60048080359060200190919050506061565b6040518082815260200191505060405180910390f35b6000600782029050606d565b91905056";
//As the input the compiled contract is the Data, together with our address
var transactionInput = new TransactionInput();
transactionInput.Data = contractByteCode;
transactionInput.From = Settings.GetDefaultAccount();
// retrieve the hash
var minerStart = new MinerStart(client);
var minerStartResult = await minerStart.SendRequestAsync();
var transactionHash =
await
new PersonalSignAndSendTransaction(client).SendRequestAsync(transactionInput,
Settings.GetDefaultAccountPassword());
//get contract address
var ethGetTransactionReceipt = new EthGetTransactionReceipt(client);
TransactionReceipt receipt = null;
//wait for the contract to be mined to the address
while (receipt == null)
{
await Task.Delay(1000);
receipt = await ethGetTransactionReceipt.SendRequestAsync(transactionHash);
}
var minerStop = new MinerStop(client);
var minerStopResult = await minerStop.SendRequestAsync();
//Encode and build function parameters
var function = new FunctionCallEncoder();
//Input the function method Sha3Encoded (4 bytes)
var sha3Signature = "c6888fa1";
//Define input parameters
var inputParameters = new[] { new Parameter("uint", "a") };
//encode the function call (function + parameter input)
//using 69 as the input
var functionCall = function.EncodeRequest(sha3Signature, inputParameters, 69);
//reuse the transaction input, (just the address)
//the destination address is the contract address
transactionInput.To = receipt.ContractAddress;
//use as data the function call
transactionInput.Data = functionCall;
// rpc method to do the call
var ethCall = new EthCall(client);
// call and get the result
var resultFunction = await ethCall.SendRequestAsync(transactionInput);
// decode the output
var functionDecoder = new FunctionCallDecoder();
var output = functionDecoder.DecodeOutput <int>(resultFunction, new Parameter("uint", "d"));
var message = "The result of deploying a contract and calling a function to multiply 7 by 69 is: " +
output +
" and should be 483";
Assert.Equal(483, output);
return(message);
}