/// <summary>
/// Calculate required keys to sign the given transaction
/// </summary>
/// <param name="availableKeys">available public keys list</param>
/// <param name="trx">transaction requiring signatures</param>
/// <returns>required public keys</returns>
public static async Task <List <string> > GetRequiredKeys(EosApi api, core.Services.AbiSerializationProvider abiSerializer, List <string> availableKeys, Transaction trx)
{
int actionIndex = 0;
var abiResponses = await abiSerializer.GetTransactionAbis(trx);
foreach (var action in trx.context_free_actions)
{
action.data = SerializationHelper.ByteArrayToHexString(abiSerializer.SerializeActionData(action, abiResponses[actionIndex++]));
}
foreach (var action in trx.actions)
{
action.data = SerializationHelper.ByteArrayToHexString(abiSerializer.SerializeActionData(action, abiResponses[actionIndex++]));
}
return((await api.GetRequiredKeys(new GetRequiredKeysRequest()
{
available_keys = availableKeys,
transaction = trx
})).required_keys);
}
public static async Task <string> CreateTransaction(Transaction trx)
{
core.Services.AbiSerializationProvider.Prefix = "VHKD";
var eosConfig = new EosConfigurator()
{
HttpEndpoint = "http://192.168.1.61", //Mainnet
ExpireSeconds = 60,
ChainId = "afe97f023511453c09c64f5bb655e7f4dc6694685aff7231219964e9cc521585",
SignProvider = new core.Services.DefaultSignProvider("5JNNWKaCoWvN5xojDXsW38Z6uoLmvM9NPh3coQD5z3TgsuY4nmt", "VHKD")
};
var api = new EosApi(eosConfig, new HttpHandler());
var abiSerializer = new core.Services.AbiSerializationProvider(api);
if (eosConfig.SignProvider == null)
{
throw new ArgumentNullException("SignProvider");
}
GetInfoResponse getInfoResult = null;
string chainId = eosConfig.ChainId;
if (string.IsNullOrWhiteSpace(chainId))
{
getInfoResult = await api.GetInfo();
chainId = getInfoResult.chain_id;
}
if (trx.expiration == DateTime.MinValue ||
trx.ref_block_num == 0 ||
trx.ref_block_prefix == 0)
{
if (getInfoResult == null)
{
getInfoResult = await api.GetInfo();
}
var getBlockResult = await api.GetBlock(new GetBlockRequest()
{
block_num_or_id = getInfoResult.last_irreversible_block_num.ToString()
});
trx.expiration = getInfoResult.head_block_time.AddSeconds(eosConfig.ExpireSeconds);
trx.ref_block_num = (UInt16)(getInfoResult.last_irreversible_block_num & 0xFFFF);
trx.ref_block_prefix = getBlockResult.ref_block_prefix;
}
var packedTrx = await abiSerializer.SerializePackedTransaction(trx);
var availableKeys = await eosConfig.SignProvider.GetAvailableKeys();
var requiredKeys = await GetRequiredKeys(api, abiSerializer, availableKeys.ToList(), trx);
IEnumerable <string> abis = null;
if (trx.actions != null)
{
abis = trx.actions.Select(a => a.account);
}
var signatures = await eosConfig.SignProvider.Sign(chainId, requiredKeys, packedTrx, abis);
var result = await api.PushTransaction(new PushTransactionRequest()
{
signatures = signatures.ToArray(),
compression = 0,
packed_context_free_data = "",
packed_trx = SerializationHelper.ByteArrayToHexString(packedTrx)
});
return(result.transaction_id);
}
