diff --git a/client.go b/client.go
index 087abc7..733f242 100644
--- a/client.go
+++ b/client.go
@@ -168,20 +168,8 @@ func (cc *Client) Shell() error {
 		return err
 	}
 
-	ch := make(chan os.Signal, 2)
-	signal.Notify(ch, syscall.SIGWINCH)
-	go func() {
-		for {
-			select {
-			case <-ch:
-				ws, _ := _console.Size()
-				_winCh := windowChange{Rows: uint32(ws.Height), Columns: uint32(ws.Width)}
-				d := ssh.Marshal(_winCh)
-				ok, err := session.SendRequest("window-change", true, d)
-				log.Debugf("send window change request %+v %+v", ok, err)
-			}
-		}
-	}()
+	// register console change signal
+	consoleChange(_console, session)
 
 	session.Stdin = _console
 	session.Stdout = os.Stdout
diff --git a/console.go b/console.go
new file mode 100644
index 0000000..320d7d1
--- /dev/null
+++ b/console.go
@@ -0,0 +1,22 @@
+// +build windows
+
+package obfssh
+
+import (
+	"errors"
+	"syscall"
+
+	"github.com/containerd/console"
+	"golang.org/x/crypto/ssh"
+)
+
+func consoleChange(_console console.Console, session *ssh.Session) {
+
+}
+
+func newPty() (console.Console, string, error) {
+	return nil, "", errors.New("not supported")
+}
+
+func setProcAttr(attr *syscall.SysProcAttr) {
+}
diff --git a/console_unix.go b/console_unix.go
new file mode 100644
index 0000000..552e001
--- /dev/null
+++ b/console_unix.go
@@ -0,0 +1,39 @@
+// +build darwin freebsd linux openbsd solaris
+
+package obfssh
+
+import (
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/containerd/console"
+	"github.com/fangdingjun/go-log/v5"
+	"golang.org/x/crypto/ssh"
+)
+
+func consoleChange(_console console.Console, session *ssh.Session) {
+	ch := make(chan os.Signal, 2)
+	signal.Notify(ch, syscall.SIGWINCH)
+	go func() {
+		for {
+			select {
+			case <-ch:
+				ws, _ := _console.Size()
+				_winCh := windowChange{Rows: uint32(ws.Height), Columns: uint32(ws.Width)}
+				d := ssh.Marshal(_winCh)
+				ok, err := session.SendRequest("window-change", true, d)
+				log.Debugf("send window change request %+v %+v", ok, err)
+			}
+		}
+	}()
+}
+
+func newPty() (console.Console, string, error) {
+	return console.NewPty()
+}
+
+func setProcAttr(attr *syscall.SysProcAttr) {
+	attr.Setsid = true
+	attr.Setctty = true
+}
diff --git a/server.go b/server.go
index 5ef83ab..33a67a5 100644
--- a/server.go
+++ b/server.go
@@ -234,7 +234,7 @@ func (sc *Server) handleSession(newch ssh.NewChannel) {
 			}
 			log.Debugf("pty req %+v", _ptyReq)
 			if err == nil && (runtime.GOOS == "unix" || runtime.GOOS == "linux") {
-				_console, ptsname, err = console.NewPty()
+				_console, ptsname, err = newPty()
 				if err == nil {
 					log.Debugf("allocate pty %s", ptsname)
 					env = append(env, fmt.Sprintf("SSH_TTY=%s", ptsname))
@@ -321,9 +321,8 @@ func handleShell(cmd *exec.Cmd, ch ssh.Channel, _console console.Console, ptsnam
 		if cmd.SysProcAttr == nil {
 			cmd.SysProcAttr = &syscall.SysProcAttr{}
 		}
-		cmd.SysProcAttr.Setsid = true
-		cmd.SysProcAttr.Setctty = true
-		// cmd.SysProcAttr.Ctty = int(_tty.Fd())
+
+		setProcAttr(cmd.SysProcAttr)
 
 		go io.Copy(ch, _console)
 		go io.Copy(_console, ch)