func ExampleClient_Listen() {
config := &ssh.ClientConfig{
User: "******",
Auth: []ssh.AuthMethod{
ssh.Password("password"),
},
}
// Dial your ssh server.
conn, err := ssh.Dial("tcp", "localhost:22", config)
if err != nil {
log.Fatalf("unable to connect: %s", err)
}
defer conn.Close()
// Request the remote side to open port 8080 on all interfaces.
l, err := conn.Listen("tcp", "0.0.0.0:8080")
if err != nil {
log.Fatalf("unable to register tcp forward: %v", err)
}
defer l.Close()
// Serve HTTP with your SSH server acting as a reverse proxy.
http.Serve(l, http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
fmt.Fprintf(resp, "Hello world!\n")
}))
}
func ExampleSession_RequestPty() {
// Create client config
config := &ssh.ClientConfig{
User: "******",
Auth: []ssh.AuthMethod{
ssh.Password("password"),
},
}
// Connect to ssh server
conn, err := ssh.Dial("tcp", "localhost:22", config)
if err != nil {
log.Fatalf("unable to connect: %s", err)
}
defer conn.Close()
// Create a session
session, err := conn.NewSession()
if err != nil {
log.Fatalf("unable to create session: %s", err)
}
defer session.Close()
// Set up terminal modes
modes := ssh.TerminalModes{
ssh.ECHO: 0, // disable echoing
ssh.TTY_OP_ISPEED: 14400, // input speed = 14.4kbaud
ssh.TTY_OP_OSPEED: 14400, // output speed = 14.4kbaud
}
// Request pseudo terminal
if err := session.RequestPty("xterm", 80, 40, modes); err != nil {
log.Fatalf("request for pseudo terminal failed: %s", err)
}
// Start remote shell
if err := session.Shell(); err != nil {
log.Fatalf("failed to start shell: %s", err)
}
}
func ExampleDial() {
// An SSH client is represented with a ClientConn. Currently only
// the "password" authentication method is supported.
//
// To authenticate with the remote server you must pass at least one
// implementation of AuthMethod via the Auth field in ClientConfig.
config := &ssh.ClientConfig{
User: "******",
Auth: []ssh.AuthMethod{
ssh.Password("yourpassword"),
},
}
client, err := ssh.Dial("tcp", "yourserver.com:22", config)
if err != nil {
panic("Failed to dial: " + err.Error())
}
// Each ClientConn can support multiple interactive sessions,
// represented by a Session.
session, err := client.NewSession()
if err != nil {
panic("Failed to create session: " + err.Error())
}
defer session.Close()
// Once a Session is created, you can execute a single command on
// the remote side using the Run method.
var b bytes.Buffer
session.Stdout = &b
if err := session.Run("/usr/bin/whoami"); err != nil {
panic("Failed to run: " + err.Error())
}
fmt.Println(b.String())
}
func connect(ctx *cli.Context) {
if len(ctx.Args()) != 1 {
log.Fatal("Error: Must provide name of droplet.")
}
name := ctx.Args().First()
tokenSource := &TokenSource{
AccessToken: APIKey,
}
oauthClient := oauth2.NewClient(oauth2.NoContext, tokenSource)
client := godo.NewClient(oauthClient)
droplet, err := FindDropletByName(client, name)
if err != nil {
log.Fatal(err)
}
var ip string
for _, n := range droplet.Networks.V4 {
if n.Type == "public" {
ip = n.IPAddress
}
}
endpoint := fmt.Sprintf("%s:%d", ip, 22)
methods, err := authMethods(ctx)
if err != nil {
log.Fatal(err)
}
user := "******"
if strings.Contains(droplet.Image.Slug, "coreos") {
user = "******"
}
c := &ssh.ClientConfig{
User: user,
Auth: methods,
}
conn, err := ssh.Dial("tcp", endpoint, c)
if err != nil {
log.Fatal("Unable to connect.", err.Error())
}
session, err := conn.NewSession()
if err != nil {
log.Fatal(err.Error())
}
session.Stdout = os.Stdout
session.Stderr = os.Stderr
session.Stdin = os.Stdin
defer session.Close()
modes := ssh.TerminalModes{
ssh.ECHO: 1,
}
fd := os.Stdin.Fd()
var (
termWidth, termHeight int
)
if term.IsTerminal(fd) {
oldState, err := term.MakeRaw(fd)
if err != nil {
log.Fatal(err)
}
defer term.RestoreTerminal(fd, oldState)
winsize, err := term.GetWinsize(fd)
if err != nil {
termWidth = 80
termHeight = 24
} else {
termWidth = int(winsize.Width)
termHeight = int(winsize.Height)
}
}
if err := session.RequestPty("xterm", termWidth, termHeight, modes); err != nil {
session.Close()
log.Fatalf("request for pseudo terminal failed: %s", err)
}
if err == nil {
err = session.Shell()
}
if err != nil {
log.Fatal(err)
}
err = session.Wait()
if err != nil && err != io.EOF {
// Ignore the error if it's an ExitError with an empty message,
// this occurs when you do CTRL+c and then run exit cmd which isn't an
// actual error.
waitMsg, ok := err.(*ssh.ExitError)
if ok && waitMsg.Msg() == "" {
return
}
log.Fatal(err)
}
}