diff --git a/server.go b/server.go
index 45b54df..0576454 100644
--- a/server.go
+++ b/server.go
@@ -2,7 +2,6 @@ package overflow_gateway_websocket
 
 import (
 	"net/http"
-	"sync"
 
 	"git.loafle.net/overflow/overflow_gateway_websocket/websocket"
 	"github.com/valyala/fasthttp"
@@ -10,16 +9,9 @@ import (
 
 type ()
 
-type sendRequest struct {
-	s Socket
-	m []byte
-}
-
 type Server interface {
 	ListenAndServe(addr string) error
 	HandleSocket(pattern string, o *SocketOptions)
-	Send(soc Socket, m []byte)
-	SendAll(m []byte)
 }
 
 type server struct {
@@ -27,11 +19,8 @@ type server struct {
 	_upgrader       *websocket.Upgrader
 	_handlers       map[string]*SocketOptions
 	_sockets        map[string]Socket
-	_sIdMtx         sync.Mutex
 	_addSocketCh    chan Socket
 	_removeSocketCh chan Socket
-	_sendCh         chan sendRequest
-	_sendAllCh      chan []byte
 }
 
 func NewServer(o *ServerOptions) Server {
@@ -41,8 +30,6 @@ func NewServer(o *ServerOptions) Server {
 		_sockets:        make(map[string]Socket, 100),
 		_addSocketCh:    make(chan Socket),
 		_removeSocketCh: make(chan Socket),
-		_sendCh:         make(chan sendRequest),
-		_sendAllCh:      make(chan []byte),
 	}
 
 	s._upgrader = &websocket.Upgrader{
@@ -90,9 +77,7 @@ func (s *server) onConnection(ctx *fasthttp.RequestCtx) {
 			s.onError(ctx, fasthttp.StatusInternalServerError, err)
 			return
 		}
-		s._sIdMtx.Lock()
 		id := s._option.IDGenerator(ctx)
-		s._sIdMtx.Unlock()
 		soc := NewSocket(id, path, co, conn)
 		s.addSocket(soc)
 		s._option.OnConnection(soc)
@@ -111,26 +96,12 @@ func (s *server) listenHandler() {
 		// remove a socket
 		case soc := <-s._removeSocketCh:
 			delete(s._sockets, soc.ID())
-		case sr := <-s._sendCh:
-			sr.s.Write(sr.m)
-		case m := <-s._sendAllCh:
-			for _, soc := range s._sockets {
-				soc.Write(m)
-			}
 		}
 	}
 }
 
-func (s *server) Send(soc Socket, m []byte) {
-	r := sendRequest{
-		s: soc,
-		m: m,
-	}
-	s._sendCh <- r
-}
-
-func (s *server) SendAll(m []byte) {
-	s._sendAllCh <- m
+func (s *server) Sockets() map[string]Socket {
+	return s._sockets
 }
 
 func (s *server) HandleSocket(pattern string, o *SocketOptions) {