Golang remote transfer of files

This is a creation in Article, where the information may have evolved or changed.

                                                                                                     
Overview
One previous article describes how to use Golang to execute remote commands via the SSH protocol: Golang execute remote command Similarly, the SSH protocol can also use Golang to remotely transfer files.
In addition to the SSH library, in order to transfer files, you also need to use the GITHUB.COM/PKG/SFTP library.
Implementation method
Don't say much nonsense, just look at the code. Because it is a remote file transfer based on the SSH protocol, the SSH connection is created, and the SFTP client that transmits the file is created.
Func Connect (user, password, host string, Port int) (*SFTP. Client, error) { var (   auth         []SSH. Authmethod    ADDR         string    clientconfig *ssh. ClientConfig    sshclient    *SSH. Client    sftpclient   *sftp. Client    err          error  )  //Get auth method  auth = make ([]s Sh. Authmethod, 0)  auth = append (auth, ssh. Password (Password))  clientconfig = &ssh. clientconfig{   user:    user,    auth:    auth,    timeout:30 * ti Me. Second,  }  //connet to ssh  addr = fmt. Sprintf ("%s:%d", host, Port)  if sshclient, err = ssh. Dial ("TCP", addr, ClientConfig); Err! = Nil {   return nil, err  }  //create SFTP client  if sftpclient, err = sftp. Newclient (sshclient); Err! = Nil {  &Nbsp;return Nil, err  }  return sftpclient, nil} 
Send file
After creating sftpclient using the Connect method above, it is easy to send the file.
Package main import (  "FMT"   "Log"   "OS"   "path"   "Time"   "Github.com/pkg/sftp" & nbsp; " Golang.org/x/crypto/ssh ") Func main () { var (   err        error    SF Tpclient *sftp. Client  )  //here for the actual SSH connection username, password, hostname or IP,SSH port  sftpclient, err = connect ("root", "Rootpass", "127.0 .0.1 ","  if err! = Nil {   log. Fatal (Err)  }  defer sftpclient.close ()  //used to test the local file path and folder on the remote machine  var Localfilepath = "/path/t O/local/file/test.txt " var remotedir ="/remote/dir/" srcfile, err: = OS. Open (Localfilepath)  if err! = Nil {   log. Fatal (Err)  }  defer srcfile.close ()  var remotefilename = path. Base (Localfilepath)  dstfile, err: = Sftpclient.create (path. Join (Remotedir, remotefilename))  if err! = Nil {   log. Fatal (Err)  }  defer dstfile.close ()  buf: = Make([]byte, 1024x768)  for {   n, _: = Srcfile.read (buf)    if n = = 0 {     break    }    dstfile.write (BUF)  }  fmt. Println ("Copy file to remote server finished!")}
Get file
Getting files from a remote machine is slightly different, but it's also simple.
Package main import (  "FMT"   "Log"   "OS"   "path"   "Time"   "Github.com/pkg/sftp" & nbsp; " Golang.org/x/crypto/ssh ") Func main () { var (   err        error    s FtpClient *sftp. Client  )  //here for the actual SSH connection username, password, hostname or IP,SSH port  sftpclient, err = connect ("root", "Rootpass", "127.0 .0.1 ","  if err! = Nil {   log. Fatal (Err)  }  defer sftpclient.close ()  //used to test the remote file path and local folder  var Remotefilepath = "/path/to/r Emote/path/test.txt " var localdir ="/local/dir " srcfile, err: = Sftpclient.open (Remotefilepath)  if Err! = Nil {   log. Fatal (Err)  }  defer srcfile.close ()  var localfilename = path. Base (Remotefilepath)  dstfile, err: = OS. Create (path. Join (Localdir, LocalFilename))  if err! = Nil {   log. Fatal (Err)  }  defer Dstfile.close ()  if _, err = srcFile.writeto (Dstfile); Err! = Nil {   log. Fatal (Err)  }  fmt. Println ("Copy file from remote server finished!")}
Summarize
The above example just shows the file transfer, the transfer folder is also very simple, just a lot of steps to traverse the folder and create folders, the specific function can view the SFTP Library of Doc.
Source: http://blog.iotalabs.io/
This article from: Blog Park
Thanks to the author: wang_yb
View Original: Golang Remote transfer file

                     

View Original: http://www.zoues.com/2016/10/20/golang-%e8%bf%9c%e7%a8%8b%e4%bc%a0%e8%be%93%e6%96%87%e4%bb%b6/