diff --git a/.vscode/settings.json b/.vscode/settings.json
index 46c249c..20af2f6 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,11 +1,3 @@
 // Place your settings in this file to overwrite default and user settings.
 {
-  // Specifies Lint tool name.
-  "go.lintTool": "gometalinter",
-
-  // Flags to pass to Lint tool (e.g. ["-min_confidence=.8"])
-  "go.lintFlags": [
-    "--config=${workspaceRoot}/golint.json"
-  ]
-
 }
\ No newline at end of file
diff --git a/glide.yaml b/glide.yaml
index 88d38f8..4625fd5 100644
--- a/glide.yaml
+++ b/glide.yaml
@@ -17,3 +17,4 @@ import:
 - package: git.loafle.net/commons_go/util
   subpackages:
   - channel
+- package: git.loafle.net/commons_go/logging
diff --git a/golint.json b/golint.json
deleted file mode 100644
index 6380714..0000000
--- a/golint.json
+++ /dev/null
@@ -1,39 +0,0 @@
-{
-  "DisableAll": true,
-  "Enable": [
-      "aligncheck",
-      "deadcode",
-      "dupl",
-      "errcheck",
-      "gas",
-      "goconst",
-      "gocyclo",
-      "gofmt",
-      "goimports",
-      "golint",
-      "gotype",
-      "ineffassign",
-      "interfacer",
-      "lll",
-      "megacheck",
-      "misspell",
-      "structcheck",
-      "test",
-      "testify",
-      "unconvert",
-      "varcheck",
-      "vet",
-      "vetshadow"
-  ],
-  "Aggregate": true,
-  "Concurrency": 16,
-  "Cyclo": 60,
-  "Deadline": "60s",
-  "DuplThreshold": 50,
-  "EnableGC": true,
-  "LineLength": 120,
-  "MinConfidence": 0.8,
-  "MinOccurrences": 3,
-  "MinConstLength": 3,
-  "Sort": ["severity"]
-}
\ No newline at end of file
diff --git a/protocol/jsonrpc/handler.go b/protocol/jsonrpc/handler.go
index 1de5cd4..945c240 100644
--- a/protocol/jsonrpc/handler.go
+++ b/protocol/jsonrpc/handler.go
@@ -1,11 +1,13 @@
 package jsonrpc
 
 import (
+	"context"
 	"encoding/json"
-	"fmt"
 	"io"
-	"log"
 
+	"go.uber.org/zap"
+
+	"git.loafle.net/commons_go/logging"
 	gws "git.loafle.net/overflow/overflow_gateway_websocket"
 )
 
@@ -14,12 +16,16 @@ type MessageHandler interface {
 }
 
 type messageHandler struct {
-	o *Options
+	ctx    context.Context
+	logger *zap.Logger
+	o      *Options
 }
 
-func NewHandler(o *Options) MessageHandler {
+func NewHandler(ctx context.Context, o *Options) MessageHandler {
 	h := &messageHandler{
-		o: o,
+		ctx:    ctx,
+		logger: logging.WithContext(ctx),
+		o:      o,
 	}
 
 	return h
@@ -56,7 +62,7 @@ func (h *messageHandler) onRequest(soc gws.Socket, req *ServerRequest) []byte {
 
 	j, err := json.Marshal(res)
 	if nil != err {
-		log.Println(fmt.Errorf("%v", err))
+		h.logger.Error("JSON RPC error", zap.Any("err", err))
 	}
 
 	return j
@@ -65,6 +71,6 @@ func (h *messageHandler) onRequest(soc gws.Socket, req *ServerRequest) []byte {
 func (h *messageHandler) onNotify(soc gws.Socket, req *ServerRequest) {
 	err := h.o.OnNotify(soc, req.Method, req.Params)
 	if nil != err {
-		log.Println(fmt.Errorf("%v", err))
+		h.logger.Error("JSON RPC error", zap.Any("err", err))
 	}
 }
diff --git a/server.go b/server.go
index 216aeb5..0528fa2 100644
--- a/server.go
+++ b/server.go
@@ -2,9 +2,11 @@ package overflow_gateway_websocket
 
 import (
 	"context"
-	"log"
 	"net/http"
 
+	"go.uber.org/zap"
+
+	"git.loafle.net/commons_go/logging"
 	channelUtil "git.loafle.net/commons_go/util/channel"
 	"git.loafle.net/overflow/overflow_gateway_websocket/websocket"
 	"github.com/valyala/fasthttp"
@@ -24,6 +26,7 @@ type Server interface {
 
 type server struct {
 	_ctx       context.Context
+	_logger    *zap.Logger
 	_option    *ServerOptions
 	_upgrader  *websocket.Upgrader
 	_handlers  map[string]*SocketOptions
@@ -34,6 +37,7 @@ type server struct {
 func NewServer(ctx context.Context, o *ServerOptions) Server {
 	s := &server{
 		_ctx:       ctx,
+		_logger:    logging.WithContext(ctx),
 		_option:    o.Validate(),
 		_handlers:  make(map[string]*SocketOptions, 1),
 		_sockets:   make(map[string]Socket, 100),
@@ -94,7 +98,7 @@ func (s *server) onConnection(ctx *fasthttp.RequestCtx) {
 			return
 		}
 		id := s._option.IDGenerator(ctx)
-		soc := NewSocket(id, path, co, conn)
+		soc := NewSocket(s._ctx, id, path, co, conn)
 		s.addSocket(soc)
 		s._option.OnConnection(soc)
 
@@ -106,7 +110,7 @@ func (s *server) listenHandler() {
 	for {
 		select {
 		case <-s._ctx.Done():
-			log.Println("websocket server: Context Done")
+			s._logger.Info("websocket server: Context Done")
 			return
 		case ca := <-s._socketsCh:
 			switch ca.Type {
diff --git a/socket.go b/socket.go
index c1b4976..1e98aa1 100644
--- a/socket.go
+++ b/socket.go
@@ -1,11 +1,13 @@
 package overflow_gateway_websocket
 
 import (
-	"fmt"
+	"context"
 	"io"
-	"log"
 	"time"
 
+	"go.uber.org/zap"
+
+	"git.loafle.net/commons_go/logging"
 	"git.loafle.net/overflow/overflow_gateway_websocket/websocket"
 )
 
@@ -18,6 +20,8 @@ type Socket interface {
 }
 
 type socket struct {
+	ctx          context.Context
+	logger       *zap.Logger
 	id           string
 	o            *SocketOptions
 	conn         *websocket.Conn
@@ -27,8 +31,10 @@ type socket struct {
 	disconnectCh chan bool
 }
 
-func NewSocket(id string, path string, o *SocketOptions, conn *websocket.Conn) Socket {
+func NewSocket(ctx context.Context, id string, path string, o *SocketOptions, conn *websocket.Conn) Socket {
 	c := &socket{
+		ctx:          ctx,
+		logger:       logging.WithContext(ctx),
 		id:           id,
 		o:            o,
 		conn:         conn,
@@ -106,12 +112,12 @@ func (soc *socket) listenWrite() {
 		case w := <-soc.writeCh:
 			if writeTimeout := soc.o.WriteTimeout; writeTimeout > 0 {
 				err := soc.conn.SetWriteDeadline(time.Now().Add(writeTimeout))
-				log.Println(fmt.Errorf("%v", err))
+				soc.logger.Error("Socket timeout", zap.Any("err", err))
 			}
 
 			err := soc.conn.WriteMessage(soc.messageType, w)
 			if nil != err {
-				log.Println(fmt.Errorf("%v", err))
+				soc.logger.Error("Socket Write error", zap.Any("err", err))
 			}
 
 		// receive done request