Crypto ssh when session.StdoutPipe.Read(buf) return io.EOF error?

package main

import (
	"fmt"
	cssh "golang.org/x/crypto/ssh"
	"io"
	"time"
)

func handleError(err error) {
	if err != nil {
		panic(err)
	}
}

func readBuffForString(sshOut io.Reader) string {
	buf := make([]byte, 1000)
	n, err := sshOut.Read(buf) //this reads the ssh terminal
	waitingString := ""
	if err == nil {
		for _, v := range buf[:n] {
			fmt.Printf("%c", v)
		}
		waitingString = string(buf[:n])
	}
	for err == nil {
		// this loop will not end!!
		n, err = sshOut.Read(buf)
		waitingString += string(buf[:n])
		for _, v := range buf[:n] {
			fmt.Printf("%c", v)
		}
		if err != nil {
			fmt.Println(err)
		}
	}
	return waitingString
}

func write(cmd string, sshIn io.WriteCloser) {
	_, err := sshIn.Write([]byte(cmd + "\r"))
	handleError(err)
}

func main() {
	// create a new connection
	conn, err := cssh.Dial("tcp", "172.16.240.189:22", &cssh.ClientConfig{
		User:            "admin",
		Auth:            []cssh.AuthMethod{cssh.Password("r00ttest")},
		HostKeyCallback: cssh.InsecureIgnoreHostKey(),
		Timeout:         5 * time.Second,
	})

	if err != nil {
		fmt.Println(err)
	}
	session, err := conn.NewSession()
	handleError(err)
	sshOut, err := session.StdoutPipe()
	handleError(err)
	sshIn, err := session.StdinPipe()

	err = session.Shell()
	handleError(err)

	write("configure", sshIn)
	readBuffForString(sshOut)

	session.Close()
	conn.Close()
}

the loop in readBuffForString will not end

You already asked this and got an answer here: Crypto ssh how to read the stdout pipe end? (Dave’s).

Please don’t just repeat topics. If you don’t understand the answer, follow up in the original topic.

Sorry. How to delete this topic?

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.