support dial to remote readline

remote.go

@@ -0,0 +1,49 @@
+package readline
+
+import (
+	"io"
+	"net"
+	"os"
+)
+
+type Conn struct {
+	Conn     net.Conn
+	Terminal *Terminal
+	runChan  chan error
+}
+
+func NewConn(conn net.Conn, t *Terminal) (*Conn, error) {
+	return &Conn{
+		Conn:     conn,
+		Terminal: t,
+		runChan:  make(chan error),
+	}, nil
+}
+
+func (c *Conn) Run() error {
+	c.Terminal.EnterRawMode()
+	go func() {
+		_, err := io.Copy(c.Conn, os.Stdin)
+		c.runChan <- err
+	}()
+	go func() {
+		_, err := io.Copy(os.Stdout, c.Conn)
+		c.runChan <- err
+	}()
+	err := <-c.runChan
+	c.Terminal.ExitRawMode()
+	return err
+}
+
+func Dial(network string, address string) (*Remote, error) {
+	conn, err := net.Dial(network, address)
+	if err != nil {
+		return nil, err
+	}
+	var cfg Config
+	t, err := NewTerminal(&cfg)
+	if err != nil {
+		return nil, err
+	}
+	return NewRemote(conn, t)
+}