stat : no such file or directory. I don't konw the reason

[yangyile1990]

package main

import (
	"github.com/btcsuite/btcd/rpcclient"
)

func main() {
	cfg := &rpcclient.ConnConfig{
		Host:         "go.getblock.io/0371879beb44418680721ddd4cd53f81", // 第三方 DOGE币节点的RPC地址
		User:         "",                                                // 留空或设置为一个空字符串
		Pass:         "",                                                // 留空或设置为一个空字符串
		DisableTLS:   true,                                              // DOGE币节点默认不使用TLS
		HTTPPostMode: true,                                              // DOGE币节点只支持HTTP POST模式
	}
	client, err := rpcclient.New(cfg, nil)
	if err != nil {
		panic(err)
	}

	err = client.Ping()
	if err != nil {
		panic(err)
	}
}

panic: stat : no such file or directory. why?

[guggero]

A panic gives you a stack trace that tells you exactly where something panics and why. Without that information, we cannot help you.

[cl1ckname]

I've encountered this error when I specified an incorrect host path (such as /wallet/:walletName, where walletName does not exist) when connecting to a bitcoind node. rpcclient simply proxies this error from the node. Check the connection host

[yemmyharry]

Since you're using panic, the runtime should print the file and line number where the panic originated. The error message you showed doesn't explicitly indicate the source of error. You can as well use the log.Fatalf function to print the stack trace along with the panic error message.

[pustovalov]

Hi,

Not all providers require authentication through a password or a cookie. Given the following configuration:

cfg := &rpcclient.ConnConfig{
  Host:         "go.getblock.io/0371879beb44418680721ddd4cd53f81",
  User:         "",
  Pass:         "",
  DisableTLS:   true,
  HTTPPostMode: true,
}

btcd/rpcclient/infrastructure.go

Lines 1276 to 1284 in 2f4ff84

	func (config *ConnConfig) getAuth() (username, passphrase string, err error) {
	// Try username+passphrase auth first.
	if config.Pass != "" {
	return config.User, config.Pass, nil
	}
	// If no username or passphrase is set, try cookie auth.
	return config.retrieveCookie()
	}

getAuth() will call config.retrieveCookie() and because there's no config.CookiePath there will be an error

st, err := os.Stat(config.CookiePath)
fmt.Println("err111", err)

err111 stat : no such file or directory