// NotifyBlocksAsync 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 NotifyBlocks for the blocking version and more details.
//
// NOTE: This is a btcd extension and requires a websocket connection.
func (c *Client) NotifyBlocksAsync() FutureNotifyBlocksResult {
// Not supported in HTTP POST mode.
if c.config.HttpPostMode {
return newFutureError(ErrNotificationsNotSupported)
}
// Ignore the notification if the client is not interested in
// notifications.
if c.ntfnHandlers == nil {
return newNilFutureResult()
}
id := c.NextID()
cmd := btcws.NewNotifyBlocksCmd(id)
return c.sendCmd(cmd)
}
// NotifyBlocks requests blockconnected and blockdisconnected notifications.
func NotifyBlocks(rpc ServerConn) *btcjson.Error {
cmd := btcws.NewNotifyBlocksCmd(<-NewJSONID)
response := <-rpc.SendRequest(NewServerRequest(cmd))
_, jsonErr := response.FinishUnmarshal(nil)
return jsonErr
}
// NotifyBlocks requests blockconnected and blockdisconnected notifications.
func NotifyBlocks(rpc ServerConn) *btcjson.Error {
cmd := btcws.NewNotifyBlocksCmd(<-NewJSONID)
request := NewServerRequest(cmd, nil)
response := <-rpc.SendRequest(request)
return response.Error()
}