2019-10-07 02:59:46 +00:00
|
|
|
package finger
|
|
|
|
|
|
|
|
import (
|
|
|
|
"fmt"
|
|
|
|
"io/ioutil"
|
2019-11-10 18:41:12 +00:00
|
|
|
"net"
|
2019-10-07 02:59:46 +00:00
|
|
|
"time"
|
|
|
|
)
|
|
|
|
|
|
|
|
func Finger(host, port, resource string) (string, error) {
|
|
|
|
addr := fmt.Sprintf("%s:%s", host, port)
|
|
|
|
|
|
|
|
timeOut := time.Duration(3) * time.Second
|
|
|
|
conn, err := net.DialTimeout("tcp", addr, timeOut)
|
|
|
|
if err != nil {
|
|
|
|
return "", err
|
|
|
|
}
|
|
|
|
|
|
|
|
defer conn.Close()
|
|
|
|
|
|
|
|
_, err = conn.Write([]byte(resource + "\r\n"))
|
|
|
|
if err != nil {
|
|
|
|
return "", err
|
|
|
|
}
|
|
|
|
|
|
|
|
result, err := ioutil.ReadAll(conn)
|
|
|
|
if err != nil {
|
|
|
|
return "", err
|
|
|
|
}
|
|
|
|
return string(result), nil
|
|
|
|
}
|