move transport (#1967)

network/transport/transport.go

@@ -0,0 +1,50 @@
+// Package transport is an interface for synchronous connection based communication
+package transport
+
+import (
+	"time"
+)
+
+// Transport is an interface which is used for communication between
+// services. It uses connection based socket send/recv semantics and
+// has various implementations; http, grpc, quic.
+type Transport interface {
+	Init(...Option) error
+	Options() Options
+	Dial(addr string, opts ...DialOption) (Client, error)
+	Listen(addr string, opts ...ListenOption) (Listener, error)
+	String() string
+}
+
+type Message struct {
+	Header map[string]string
+	Body   []byte
+}
+
+type Socket interface {
+	Recv(*Message) error
+	Send(*Message) error
+	Close() error
+	Local() string
+	Remote() string
+}
+
+type Client interface {
+	Socket
+}
+
+type Listener interface {
+	Addr() string
+	Close() error
+	Accept(func(Socket)) error
+}
+
+type Option func(*Options)
+
+type DialOption func(*DialOptions)
+
+type ListenOption func(*ListenOptions)
+
+var (
+	DefaultDialTimeout = time.Second * 5
+)