diff --git a/app/pubsub/internal/pubsub.go b/app/pubsub/internal/pubsub.go
deleted file mode 100644
index d7af629f6..000000000
--- a/app/pubsub/internal/pubsub.go
+++ /dev/null
@@ -1,64 +0,0 @@
-package internal
-
-import (
-	"sync"
-
-	"github.com/v2ray/v2ray-core/app"
-	"github.com/v2ray/v2ray-core/app/pubsub"
-)
-
-type TopicHandlerList struct {
-	sync.RWMutex
-	handlers []pubsub.TopicHandler
-}
-
-func NewTopicHandlerList(handlers ...pubsub.TopicHandler) *TopicHandlerList {
-	return &TopicHandlerList{
-		handlers: handlers,
-	}
-}
-
-func (this *TopicHandlerList) Add(handler pubsub.TopicHandler) {
-	this.Lock()
-	this.handlers = append(this.handlers, handler)
-	this.Unlock()
-}
-
-func (this *TopicHandlerList) Dispatch(message pubsub.PubsubMessage) {
-	this.RLock()
-	for _, handler := range this.handlers {
-		go handler(message)
-	}
-	this.RUnlock()
-}
-
-type Pubsub struct {
-	topics map[string]*TopicHandlerList
-	sync.RWMutex
-}
-
-func New() *Pubsub {
-	return &Pubsub{
-		topics: make(map[string]*TopicHandlerList),
-	}
-}
-
-func (this *Pubsub) Publish(context app.Context, topic string, message pubsub.PubsubMessage) {
-	this.RLock()
-	list, found := this.topics[topic]
-	this.RUnlock()
-
-	if found {
-		list.Dispatch(message)
-	}
-}
-
-func (this *Pubsub) Subscribe(context app.Context, topic string, handler pubsub.TopicHandler) {
-	this.Lock()
-	defer this.Unlock()
-	if list, found := this.topics[topic]; found {
-		list.Add(handler)
-	} else {
-		this.topics[topic] = NewTopicHandlerList(handler)
-	}
-}
diff --git a/app/pubsub/internal/pubsub_test.go b/app/pubsub/internal/pubsub_test.go
deleted file mode 100644
index 5b16fad53..000000000
--- a/app/pubsub/internal/pubsub_test.go
+++ /dev/null
@@ -1,38 +0,0 @@
-package internal_test
-
-import (
-	"testing"
-	"time"
-
-	"github.com/v2ray/v2ray-core/app/pubsub"
-	. "github.com/v2ray/v2ray-core/app/pubsub/internal"
-	apptesting "github.com/v2ray/v2ray-core/app/testing"
-	v2testing "github.com/v2ray/v2ray-core/testing"
-	"github.com/v2ray/v2ray-core/testing/assert"
-)
-
-func TestPubsub(t *testing.T) {
-	v2testing.Current(t)
-
-	messages := make(map[string]pubsub.PubsubMessage)
-
-	ps := New()
-	ps.Subscribe(&apptesting.Context{}, "t1", func(message pubsub.PubsubMessage) {
-		messages["t1"] = message
-	})
-
-	ps.Subscribe(&apptesting.Context{}, "t2", func(message pubsub.PubsubMessage) {
-		messages["t2"] = message
-	})
-
-	message := pubsub.PubsubMessage([]byte("This is a pubsub message."))
-	ps.Publish(&apptesting.Context{}, "t2", message)
-	<-time.Tick(time.Second)
-
-	_, found := messages["t1"]
-	assert.Bool(found).IsFalse()
-
-	actualMessage, found := messages["t2"]
-	assert.Bool(found).IsTrue()
-	assert.StringLiteral(string(actualMessage)).Equals(string(message))
-}
diff --git a/app/pubsub/pubsub.go b/app/pubsub/pubsub.go
deleted file mode 100644
index 5841bc391..000000000
--- a/app/pubsub/pubsub.go
+++ /dev/null
@@ -1,45 +0,0 @@
-package pubsub
-
-import (
-	"github.com/v2ray/v2ray-core/app"
-)
-
-const (
-	APP_ID = app.ID(3)
-)
-
-type PubsubMessage []byte
-type TopicHandler func(PubsubMessage)
-
-type Pubsub interface {
-	Publish(topic string, message PubsubMessage)
-	Subscribe(topic string, handler TopicHandler)
-}
-
-type pubsubWithContext interface {
-	Publish(context app.Context, topic string, message PubsubMessage)
-	Subscribe(context app.Context, topic string, handler TopicHandler)
-}
-
-type contextedPubsub struct {
-	context app.Context
-	pubsub  pubsubWithContext
-}
-
-func (this *contextedPubsub) Publish(topic string, message PubsubMessage) {
-	this.pubsub.Publish(this.context, topic, message)
-}
-
-func (this *contextedPubsub) Subscribe(topic string, handler TopicHandler) {
-	this.pubsub.Subscribe(this.context, topic, handler)
-}
-
-func init() {
-	app.RegisterApp(APP_ID, func(context app.Context, obj interface{}) interface{} {
-		pubsub := obj.(pubsubWithContext)
-		return &contextedPubsub{
-			context: context,
-			pubsub:  pubsub,
-		}
-	})
-}