// SignRawTransaction2Async returns an instance of a type that can be used to
// get the result of the RPC at some future time by invoking the Receive
// function on the returned instance.
//
// See SignRawTransaction2 for the blocking version and more details.
func (c *Client) SignRawTransaction2Async(tx *btcwire.MsgTx, inputs []btcjson.RawTxInput) FutureSignRawTransactionResult {
txHex := ""
if tx != nil {
// Serialize the transaction and convert to hex string.
buf := bytes.NewBuffer(make([]byte, 0, tx.SerializeSize()))
if err := tx.Serialize(buf); err != nil {
return newFutureError(err)
}
txHex = hex.EncodeToString(buf.Bytes())
}
id := c.NextID()
cmd, err := btcjson.NewSignRawTransactionCmd(id, txHex, inputs)
if err != nil {
return newFutureError(err)
}
return c.sendCmd(cmd)
}
// makeSignRawTransaction generates the cmd structure for signrawtransaction commands.
func makeSignRawTransaction(args []interface{}) (btcjson.Cmd, error) {
optArgs := make([]interface{}, 0, 3)
if len(args) > 1 {
var inputs []btcjson.RawTxInput
err := json.Unmarshal([]byte(args[1].(string)), &inputs)
if err != nil {
return nil, err
}
optArgs = append(optArgs, inputs)
}
if len(args) > 2 {
var inputs []string
err := json.Unmarshal([]byte(args[2].(string)), &inputs)
if err != nil {
return nil, err
}
optArgs = append(optArgs, inputs)
}
if len(args) > 3 {
optArgs = append(optArgs, args[3])
}
return btcjson.NewSignRawTransactionCmd("btcctl", args[0].(string), optArgs...)
}