Add tunnel interface

network/tunnel/tunnel.go

@@ -0,0 +1,64 @@
+// Package tunnel provides a network tunnel
+package tunnel
+
+import (
+	"github.com/micro/go-micro/config/options"
+	"github.com/micro/go-micro/transport"
+)
+
+// Tunnel creates a network tunnel
+type Tunnel interface {
+	// Connect connects the tunnel
+	Connect() error
+	// Close closes the tunnel
+	Close() error
+	// Dial an endpoint
+	Dial(addr string) (Conn, error)
+	// Accept connections
+	Accept(addr string) (Conn, error)
+}
+
+// Conn return a transport socket with a unique id.
+// This means Conn can be used as a transport.Socket
+type Conn interface {
+	// Unique id of the connection
+	Id() string
+	// Underlying socket
+	transport.Socket
+}
+
+// A network interface to use for sending/receiving.
+// When Tunnel.Connect is called it starts processing
+// messages over the interface.
+type Interface interface {
+	// Address of the interface
+	Addr() string
+	// Receive new messages
+	Recv() (*Message, error)
+	// Send messages
+	Send(*Message) error
+}
+
+// Messages received over the interface
+type Message struct {
+	Header map[string]string
+	Body   []byte
+}
+
+// NewTunnel creates a new tunnel
+func NewTunnel(opts ...options.Option) Tunnel {
+	options := options.NewOptions(opts...)
+
+	i, ok := options.Values().Get("tunnel.net")
+	if !ok {
+		// wtf
+		return nil
+	}
+
+	return newTunnel(i.(Interface))
+}
+
+// WithInterface passes in the interface
+func WithInterface(net Interface) options.Option {
+	return options.WithValue("tunnel.net", net)
+}