public async Task <HexBigInteger> EstimateGasAsync(string contractAddress, TFunctionMessage functionMessage = null)
{
if (functionMessage == null)
{
functionMessage = new TFunctionMessage();
}
SetEncoderContractAddress(contractAddress);
var callInput = FunctionMessageEncodingService.CreateCallInput(functionMessage);
try
{
if (TransactionManager.EstimateOrSetDefaultGasIfNotSet)
{
return(await TransactionManager.EstimateGasAsync(callInput).ConfigureAwait(false));
}
return(null);
}
catch (RpcResponseException rpcException)
{
ContractRevertExceptionHandler.HandleContractRevertException(rpcException);
throw;
}
catch (Exception)
{
var ethCall = new EthCall(TransactionManager.Client);
var result = await ethCall.SendRequestAsync(callInput).ConfigureAwait(false);
new FunctionCallDecoder().ThrowIfErrorOnOutput(result);
throw;
}
}
public async Task <dynamic> ExecuteTestAsync(RpcClient client)
{
//The compiled solidity contract to be deployed
//contract test { function multiply(uint a) returns(uint d) { return a * 7; } }
var contractByteCode =
"0x606060405260728060106000396000f360606040526000357c010000000000000000000000000000000000000000000000000000000090048063c6888fa1146037576035565b005b604b60048080359060200190919050506061565b6040518082815260200191505060405180910390f35b6000600782029050606d565b91905056";
//Create a new Eth Send Transanction RPC Handler
var ethSendTransation = new EthSendTransaction(client);
//As the input the compiled contract is the Data, together with our address
var transactionInput = new TransactionInput();
transactionInput.Data = contractByteCode;
transactionInput.From = "0x12890d2cce102216644c59dae5baed380d84830c";
// retrieve the hash
var transactionHash = await ethSendTransation.SendRequestAsync(transactionInput);
//the contract should be mining now
//get contract address
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);
}
//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"));
//visual test
return("The result of deploying a contract and calling a function to multiply 7 by 69 is: " + output +
" and should be 483");
}
protected async Task <TReturn> CallAsync <TReturn>(TReturn functionOuput, string encodedFunctionCall,
CallInput callInput, BlockParameter block)
{
callInput.Data = encodedFunctionCall;
var result = await EthCall.SendRequestAsync(callInput, block).ConfigureAwait(false);
return(FunctionCallDecoder.DecodeFunctionOutput(functionOuput, result));
}
public async Task<dynamic> ExecuteTestAsync(RpcClient client)
{
//The compiled solidity contract to be deployed
//contract test { function multiply(uint a) returns(uint d) { return a * 7; } }
var contractByteCode = "0x606060405260728060106000396000f360606040526000357c010000000000000000000000000000000000000000000000000000000090048063c6888fa1146037576035565b005b604b60048080359060200190919050506061565b6040518082815260200191505060405180910390f35b6000600782029050606d565b91905056";
//Create a new Eth Send Transanction RPC Handler
var ethSendTransation = new EthSendTransaction(client);
//As the input the compiled contract is the Data, together with our address
var transactionInput = new TransactionInput();
transactionInput.Data = contractByteCode;
transactionInput.From = "0x12890d2cce102216644c59dae5baed380d84830c";
// retrieve the hash
var transactionHash = await ethSendTransation.SendRequestAsync( transactionInput);
//the contract should be mining now
//get contract address
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);
}
//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"));
//visual test
return "The result of deploying a contract and calling a function to multiply 7 by 69 is: " + output + " and should be 483";
}
protected async Task <TReturn> CallAsync <TReturn>(CallInput callInput, BlockParameter block)
{
var result =
await
EthCall.SendRequestAsync(callInput, block)
.ConfigureAwait(false);
return(DecodeSimpleTypeOutput <TReturn>(result));
}
protected async Task <TReturn> CallAsync <TReturn>(TReturn functionOuput, CallInput callInput)
{
var result =
await
EthCall.SendRequestAsync(callInput, DefaultBlock)
.ConfigureAwait(false);
return(FunctionCallDecoder.DecodeFunctionOutput(functionOuput, result));
}
protected async Task <TReturn> CallAsync <TReturn>(TReturn functionOuput, string encodedFunctionCall, BlockParameter block)
{
var result =
await
EthCall.SendRequestAsync(new CallInput(encodedFunctionCall, ContractAddress), block)
.ConfigureAwait(false);
return(FunctionCallDecoder.DecodeFunctionOutput(functionOuput, result));
}
protected async Task <TReturn> CallAsync <TReturn>(string encodedFunctionCall, CallInput callInput)
{
callInput.Data = encodedFunctionCall;
var result = await EthCall.SendRequestAsync(callInput, DefaultBlock).ConfigureAwait(false);
return
(FunctionCallDecoder.DecodeSimpleTypeOutput <TReturn>(
GetFirstParameterOrNull(FunctionABI.OutputParameters), result));
}
protected async Task <TReturn> CallAsync <TReturn>(TReturn functionOuput, string encodedFunctionCall, string from,
HexBigInteger gas, HexBigInteger value)
{
var result =
await
EthCall.SendRequestAsync(new CallInput(encodedFunctionCall, ContractAddress, @from, gas, value),
DefaultBlock).ConfigureAwait(false);
return(FunctionCallDecoder.DecodeFunctionOutput(functionOuput, result));
}
protected async Task <TReturn> CallAsync <TReturn>(string encodedFunctionCall, BlockParameter block)
{
var result =
await
EthCall.SendRequestAsync(new CallInput(encodedFunctionCall, ContractAddress), block)
.ConfigureAwait(false);
return
(FunctionCallDecoder.DecodeSimpleTypeOutput <TReturn>(
GetFirstParameterOrNull(FunctionABI.OutputParameters), result));
}
protected Task <TReturn> CallAsync <TReturn>(CallInput callInput, BlockParameter block)
{
return(EthCall.SendRequestAsync(callInput, block).ContinueWith(result =>
{
if (result.Exception != null)
{
throw result.Exception;
}
return DecodeSimpleTypeOutput <TReturn>(result.Result);
}));
}
protected Task <TReturn> CallAsync <TReturn>(TReturn functionOuput, CallInput callInput, BlockParameter block)
{
return(EthCall.SendRequestAsync(callInput, block).ContinueWith(result =>
{
if (result.Exception != null)
{
throw result.Exception;
}
return FunctionCallDecoder.DecodeFunctionOutput(functionOuput, result.Result);
}));
}
protected FunctionBase(IClient rpcClient, Contract contract, FunctionABI functionABI)
{
FunctionABI = functionABI;
this.rpcClient = rpcClient;
this.contract = contract;
this.ethCall = new EthCall(rpcClient);
this.ethSendTransaction = new EthSendTransaction(rpcClient);
this.FunctionCallDecoder = new FunctionCallDecoder();
this.FunctionCallEncoder = new FunctionCallEncoder();
}
protected FunctionBase(IClient rpcClient, Contract contract, FunctionABI functionABI)
{
FunctionABI = functionABI;
this.rpcClient = rpcClient;
this.contract = contract;
ethCall = new EthCall(rpcClient);
ethSendTransaction = new EthSendTransaction(rpcClient);
ethEstimateGas = new EthEstimateGas(rpcClient);
personalSignAndSendTransaction = new PersonalSignAndSendTransaction(rpcClient);
FunctionCallDecoder = new FunctionCallDecoder();
FunctionCallEncoder = new FunctionCallEncoder();
}
protected async Task <TReturn> CallAsync <TReturn>(string encodedFunctionCall, string from, HexBigInteger gas,
HexBigInteger value)
{
var result =
await
EthCall.SendRequestAsync(new CallInput(encodedFunctionCall, ContractAddress, @from, gas, value),
DefaultBlock).ConfigureAwait(false);
return
(FunctionCallDecoder.DecodeSimpleTypeOutput <TReturn>(
GetFirstParameterOrNull(FunctionABI.OutputParameters), result));
}
public EthApiTransactionsService(IClient client) : base(client)
{
Call = new EthCall(client);
EstimateGas = new EthEstimateGas(client);
GetTransactionByBlockHashAndIndex = new EthGetTransactionByBlockHashAndIndex(client);
GetTransactionByBlockNumberAndIndex = new EthGetTransactionByBlockNumberAndIndex(client);
GetTransactionByHash = new EthGetTransactionByHash(client);
GetTransactionCount = new EthGetTransactionCount(client);
GetTransactionReceipt = new EthGetTransactionReceipt(client);
SendRawTransaction = new EthSendRawTransaction(client);
SendTransaction = new EthSendTransaction(client);
}
public EthTransactionsService(IClient client) : base(client)
{
Call = new EthCall(client);
EstimateGas = new EthEstimateGas(client);
GetTransactionByBlockHashAndIndex = new EthGetTransactionByBlockHashAndIndex(client);
GetTransactionByBlockNumberAndIndex = new EthGetTransactionByBlockNumberAndIndex(client);
GetTransactionByHash = new EthGetTransactionByHash(client);
GetTransactionCount = new EthGetTransactionCount(client);
GetTransactionReceipt = new EthGetTransactionReceipt(client);
SendRawTransaction = new EthSendRawTransaction(client);
SendTransaction = new EthSendTransaction(client);
}
/*
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_call","params":[{"from":"0x65180b8c813457b21dad6cc6363d195231b4d2e9","data":"0x606060405260728060106000396000f360606040526000357c010000000000000000000000000000000000000000000000000000000090048063c6888fa1146037576035565b005b604b60048080359060200190919050506061565b6040518082815260200191505060405180910390f35b6000600782029050606d565b91905056"}],"id":1}' http://localhost:8545
*/
public async Task<dynamic> ExecuteTestAsync(RpcClient client)
{
//function multiply , input 69
var contractByteCode = "0xc6888fa10000000000000000000000000000000000000000000000000000000000000045";
var to = "0x32eb97b8ad202b072fd9066c03878892426320ed";
var ethSendTransation = new EthCall(client);
var transactionInput = new CallInput();
transactionInput.Data = contractByteCode;
transactionInput.To = to;
transactionInput.From = "0x12890d2cce102216644c59dae5baed380d84830c";
return await ethSendTransation.SendRequestAsync( transactionInput);
//result
// 0x00000000000000000000000000000000000000000000000000000000000001e3
//483
}
/*
* curl -X POST --data '{"jsonrpc":"2.0","method":"eth_call","params":[{"from":"0x65180b8c813457b21dad6cc6363d195231b4d2e9","data":"0x606060405260728060106000396000f360606040526000357c010000000000000000000000000000000000000000000000000000000090048063c6888fa1146037576035565b005b604b60048080359060200190919050506061565b6040518082815260200191505060405180910390f35b6000600782029050606d565b91905056"}],"id":1}' http://localhost:8545
*/
public async Task <dynamic> ExecuteTestAsync(RpcClient client)
{
//function multiply , input 69
var contractByteCode = "0xc6888fa10000000000000000000000000000000000000000000000000000000000000045";
var to = "0x32eb97b8ad202b072fd9066c03878892426320ed";
var ethSendTransation = new EthCall(client);
var transactionInput = new CallInput();
transactionInput.Data = contractByteCode;
transactionInput.To = to;
transactionInput.From = "0x12890d2cce102216644c59dae5baed380d84830c";
return(await ethSendTransation.SendRequestAsync(transactionInput));
//result
// 0x00000000000000000000000000000000000000000000000000000000000001e3
//483
}
public Task <string> QueryAsync(
string contractAddress,
TFunctionMessage contractFunctionMessage = null,
BlockParameter block = null)
{
if (contractFunctionMessage == null)
{
contractFunctionMessage = new TFunctionMessage();
}
if (block == null)
{
block = DefaultBlockParameter;
}
FunctionMessageEncodingService.SetContractAddress(contractAddress);
EnsureInitialiseAddress();
var callInput = FunctionMessageEncodingService.CreateCallInput(contractFunctionMessage);
return(EthCall.SendRequestAsync(callInput, block));
}
public QueryToSimpleTypeHandler(EthCall ethCall, string defaultAddressFrom = null, BlockParameter defaultBlockParameter = null) : base(ethCall, defaultAddressFrom, defaultBlockParameter)
{
QueryRawHandler = new QueryRawHandler <TFunctionMessage>(ethCall, defaultAddressFrom, defaultBlockParameter);
}
public QueryDecoderBaseHandler(EthCall ethCall, string defaultAddressFrom = null, BlockParameter defaultBlockParameter = null)
{
QueryRawHandler = new QueryRawHandler <TFunctionMessage>(ethCall, defaultAddressFrom, defaultBlockParameter);
}
public ContractQueryEthCallHandler(EthCall ethCall, string defaultAddressFrom = null, BlockParameter defaultBlockParameter = null)
{
DefaultAddressFrom = defaultAddressFrom;
DefaultBlockParameter = defaultBlockParameter;
EthCall = ethCall;
}
protected QueryHandlerBase(EthCall ethCall, string defaultAddressFrom = null, BlockParameter defaultBlockParameter = null)
{
EthCall = ethCall;
DefaultAddressFrom = defaultAddressFrom;
DefaultBlockParameter = defaultBlockParameter ?? BlockParameter.CreateLatest();
}
public async Task <HttpResponseMessage> CreateResponse(string parameters, string functionName)
{
HttpResponseMessage response = new HttpResponseMessage();
var body = JsonConvert.DeserializeObject <JObject>(parameters);
// Get parameters
var inputParameters = body.Values();
var arguments = new object[inputParameters.Count()];
var i = 0;
foreach (var p in inputParameters.Values())
{
arguments[i++] = p.Value <string>();
}
Nethereum.Web3.Web3 web3 = new Nethereum.Web3.Web3(BlockchainRpcEndpoint);
Contract contract = web3.Eth.GetContract(Abi, ContractAddress);
var functionABI = contract.ContractBuilder.ContractABI.Functions
.FirstOrDefault(f => f.Name == functionName);
if (functionABI == null)
{
return(new HttpResponseMessage(HttpStatusCode.BadRequest));
}
var functionParameters = functionABI.InputParameters;
if (functionParameters?.Count() != inputParameters.Count())
{
var fp = functionParameters.Count();
var ip = inputParameters.Count();
return(new HttpResponseMessage(HttpStatusCode.BadRequest));
}
Function function = contract.GetFunction(functionName);
Type returnType = GetFunctionReturnType(functionABI);
EthCall ethCall = contract.Eth.Transactions.Call;
var result = await ethCall.SendRequestAsync(function.CreateCallInput(arguments), contract.Eth.DefaultBlock).ConfigureAwait(false);
FunctionBase functionBase = function;
PropertyInfo builderBaseProperty = functionBase.GetType()
.GetProperty("FunctionBuilderBase", BindingFlags.Instance | BindingFlags.NonPublic);
if (builderBaseProperty != null)
{
FunctionBuilderBase builderBase = (FunctionBuilderBase)builderBaseProperty.GetValue(functionBase);
PropertyInfo funcCallDecoderProperty = builderBase.GetType()
.GetProperty("FunctionCallDecoder", BindingFlags.Instance | BindingFlags.NonPublic);
if (funcCallDecoderProperty != null)
{
ParameterDecoder decoder = (ParameterDecoder)funcCallDecoderProperty.GetValue(builderBase);
var results = decoder.DecodeDefaultData(result, functionABI.OutputParameters[0]);
if (results.Count == 1)
{
var resultValue = JsonConvert.SerializeObject(results[0].Result);
return(new HttpResponseMessage(HttpStatusCode.OK));
}
var resultMultiValue = Activator.CreateInstance(returnType, results.Select(r => r.Result).ToArray());
return(new HttpResponseMessage(HttpStatusCode.OK));
}
}
return(new HttpResponseMessage(HttpStatusCode.OK));
}
public QueryRawHandler(EthCall ethCall, string defaultAddressFrom = null, BlockParameter defaultBlockParameter = null) : base(ethCall, defaultAddressFrom, defaultBlockParameter)
{
}
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);
}
public GethEthApiService(IClient client) : base(client)
{
PendingTransactions = new EthPendingTransactions(client);
Call = new EthCall(client);
}
