public async Task <Tuple <Transaction, bool> > SignTransactionAsync(string passphrase, Transaction tx)
{
var client = new WalletService.WalletServiceClient(_channel);
var request = new SignTransactionRequest
{
Passphrase = ByteString.CopyFromUtf8(passphrase),
SerializedTransaction = ByteString.CopyFrom(tx.Serialize()),
};
var response = await client.SignTransactionAsync(request, cancellationToken : _tokenSource.Token);
var signedTransaction = Transaction.Deserialize(response.Transaction.ToByteArray());
var complete = response.UnsignedInputIndexes.Count == 0;
return(Tuple.Create(signedTransaction, complete));
}
