added server and client interface

client.go

@@ -0,0 +1,15 @@
+package goeventbus
+
+type Client interface {
+	Connect()
+}
+
+type tcpClient struct {
+}
+
+func (s tcpClient) Connect() {
+}
+
+func NewClient() Client {
+	return tcpClient{}
+}

examples/networkbus/client/client.go

@@ -8,5 +8,6 @@ var eventbus = goeventbus.NewEventBus()
 
 func main() {
 	network := goeventbus.NewNetworkBus(eventbus, "localhost", "/bus")
-	network.Client()
+
+	network.Client().Connect()
 }

examples/networkbus/server/server.go

@@ -8,5 +8,5 @@ var eventbus = goeventbus.NewEventBus()
 
 func main() {
 	network := goeventbus.NewNetworkBus(eventbus, "localhost", "/bus")
-	network.Server()
+	network.Server().Listen()
 }

network_bus.go

@@ -1,8 +1,8 @@
 package goeventbus
 
 type NetworkBus interface {
-	Server()
-	Client()
+	Server() Server
+	Client() Client
 }
 
 type defaultNetworkBus struct {
@@ -15,6 +15,10 @@ func NewNetworkBus(bus EventBus, address, path string) NetworkBus {
 	return defaultNetworkBus{localBus: bus, address: address, path: path}
 }
 
-func (b defaultNetworkBus) Server() {}
+func (b defaultNetworkBus) Server() Server {
+	return NewServer()
+}
 
-func (b defaultNetworkBus) Client() {}
+func (b defaultNetworkBus) Client() Client {
+	return NewClient()
+}

server.go

@@ -0,0 +1,15 @@
+package goeventbus
+
+type Server interface {
+	Listen()
+}
+
+type tcpServer struct {
+}
+
+func (s tcpServer) Listen() {
+}
+
+func NewServer() Server {
+	return tcpServer{}
+}