From e1ecd728c59558999430a3654de6a236013cb5f7 Mon Sep 17 00:00:00 2001
From: Milos Gajdos <milosgajdos83@gmail.com>
Date: Mon, 5 Aug 2019 17:52:57 +0100
Subject: [PATCH] Adds outline of go-micro Tunnel interface

---
 tunnel/options.go | 63 +++++++++++++++++++++++++++++++++++++++++++++++
 tunnel/tunnel.go  | 15 +++++++++++
 2 files changed, 78 insertions(+)
 create mode 100644 tunnel/options.go
 create mode 100644 tunnel/tunnel.go

diff --git a/tunnel/options.go b/tunnel/options.go
new file mode 100644
index 00000000..86db722e
--- /dev/null
+++ b/tunnel/options.go
@@ -0,0 +1,63 @@
+package tunnel
+
+import (
+	"github.com/google/uuid"
+	"github.com/micro/go-micro/transport"
+)
+
+var (
+	// DefaultAddress is default tunnel bind address
+	DefaultAddress = ":9096"
+)
+
+type Option func(*Options)
+
+// Options provides network configuration options
+type Options struct {
+	// Id is tunnel id
+	Id string
+	// Address is tunnel address
+	Address string
+	// Nodes are remote nodes
+	Nodes []string
+	// Transport listens to incoming connections
+	Transport transport.Transport
+}
+
+// The tunnel id
+func Id(id string) Option {
+	return func(o *Options) {
+		o.Id = id
+	}
+}
+
+// The tunnel address
+func Address(a string) Option {
+	return func(o *Options) {
+		o.Address = a
+	}
+}
+
+// Nodes specify remote network nodes
+func Nodes(n []string) Option {
+	return func(o *Options) {
+		o.Nodes = n
+	}
+}
+
+// Transport listens for incoming connections
+func Transport(t transport.Transport) Option {
+	return func(o *Options) {
+		o.Transport = t
+	}
+}
+
+// DefaultOptions returns router default options
+func DefaultOptions() Options {
+	return Options{
+		Id:        uuid.New().String(),
+		Address:   DefaultAddress,
+		Nodes:     make([]string, 0),
+		Transport: transport.DefaultTransport,
+	}
+}
diff --git a/tunnel/tunnel.go b/tunnel/tunnel.go
new file mode 100644
index 00000000..e208157b
--- /dev/null
+++ b/tunnel/tunnel.go
@@ -0,0 +1,15 @@
+// Package tunnel provides micro network tunnelling
+package tunnel
+
+import (
+	"github.com/micro/go-micro/transport"
+)
+
+// Tunnel creates a p2p network tunnel.
+type Tunnel interface {
+	transport.Transport
+	// Connect connects the tunnel
+	Connect() error
+	// Close closes the tunnel
+	Close() error
+}