diff --git a/client/rwc/socket/client_handlers.go b/client/rwc/socket/client_handlers.go
index 36ec13c..11218a3 100644
--- a/client/rwc/socket/client_handlers.go
+++ b/client/rwc/socket/client_handlers.go
@@ -2,6 +2,7 @@ package socket
 
 import (
 	"fmt"
+	"io"
 
 	"git.loafle.net/commons_go/logging"
 	"git.loafle.net/commons_go/rpc/client"
@@ -26,6 +27,10 @@ func (crwch *ClientReadWriteCloseHandlers) Connect() (interface{}, error) {
 }
 
 func (crwch *ClientReadWriteCloseHandlers) ReadResponse(clientCTX ClientContext, codec protocol.ClientCodec, conn interface{}) (protocol.ClientResponseCodec, error) {
+	if nil == conn {
+		return nil, io.EOF
+	}
+
 	soc := conn.(server.Socket)
 	resCodec, err := codec.NewResponse(soc)
 
@@ -33,6 +38,10 @@ func (crwch *ClientReadWriteCloseHandlers) ReadResponse(clientCTX ClientContext,
 }
 
 func (crwch *ClientReadWriteCloseHandlers) WriteRequest(clientCTX ClientContext, codec protocol.ClientCodec, conn interface{}, method string, params interface{}, id interface{}) error {
+	if nil == conn {
+		return io.EOF
+	}
+
 	soc := conn.(server.Socket)
 
 	if wErr := codec.WriteRequest(soc, method, params); nil != wErr {
@@ -43,6 +52,10 @@ func (crwch *ClientReadWriteCloseHandlers) WriteRequest(clientCTX ClientContext,
 }
 
 func (crwch *ClientReadWriteCloseHandlers) Disconnect(conn interface{}) {
+	if nil == conn {
+		return
+	}
+
 	soc := conn.(server.Socket)
 	soc.Close()
 }
diff --git a/client/rwc/websocket/fasthttp/client_handlers.go b/client/rwc/websocket/fasthttp/client_handlers.go
index 9b83bee..f79b365 100644
--- a/client/rwc/websocket/fasthttp/client_handlers.go
+++ b/client/rwc/websocket/fasthttp/client_handlers.go
@@ -2,6 +2,7 @@ package fasthttp
 
 import (
 	"fmt"
+	"io"
 
 	"github.com/gorilla/websocket"
 
@@ -23,6 +24,10 @@ func (crwch *ClientReadWriteCloseHandlers) Connect() (interface{}, error) {
 }
 
 func (crwch *ClientReadWriteCloseHandlers) ReadResponse(clientCTX ClientContext, codec protocol.ClientCodec, conn interface{}) (protocol.ClientResponseCodec, error) {
+	if nil == conn {
+		return nil, io.EOF
+	}
+
 	soc := conn.(cwf.Socket)
 	_, r, err := soc.NextReader()
 
@@ -32,12 +37,19 @@ func (crwch *ClientReadWriteCloseHandlers) ReadResponse(clientCTX ClientContext,
 }
 
 func (crwch *ClientReadWriteCloseHandlers) WriteRequest(clientCTX ClientContext, codec protocol.ClientCodec, conn interface{}, method string, params interface{}, id interface{}) error {
+	if nil == conn {
+		return io.EOF
+	}
+
 	soc := conn.(cwf.Socket)
 
 	wc, wErr := soc.NextWriter(websocket.TextMessage)
 	if nil != wErr {
 		return wErr
 	}
+	defer func() {
+		wc.Close()
+	}()
 
 	if wErr := codec.WriteRequest(wc, method, params); nil != wErr {
 		return wErr
@@ -47,6 +59,10 @@ func (crwch *ClientReadWriteCloseHandlers) WriteRequest(clientCTX ClientContext,
 }
 
 func (crwch *ClientReadWriteCloseHandlers) Disconnect(conn interface{}) {
+	if nil == conn {
+		return
+	}
+
 	soc := conn.(cwf.Socket)
 	soc.Close()
 }
diff --git a/protocol/json/client_response.go b/protocol/json/client_response.go
index 0d5ede2..3fc0562 100644
--- a/protocol/json/client_response.go
+++ b/protocol/json/client_response.go
@@ -65,8 +65,13 @@ func (crc *ClientResponseCodec) Notification() (protocol.ClientNotificationCodec
 
 // newClientMessageCodec returns a new ClientMessageCodec.
 func newClientResponseCodec(r io.Reader, codec codec.Codec) (protocol.ClientResponseCodec, error) {
+	decoder := json.NewDecoder(r)
+	if nil == r {
+		return nil, io.EOF
+	}
+
 	res := &clientResponse{}
-	err := json.NewDecoder(r).Decode(res)
+	err := decoder.Decode(res)
 	if err != nil {
 		if err == io.ErrUnexpectedEOF || err == io.EOF {
 			return nil, err
diff --git a/protocol/json/server_request.go b/protocol/json/server_request.go
index ed294d4..4935031 100644
--- a/protocol/json/server_request.go
+++ b/protocol/json/server_request.go
@@ -36,8 +36,13 @@ type serverRequest struct {
 // newRequestCodec returns a new ServerRequestCodec.
 func newServerRequestCodec(r io.Reader, codec codec.Codec) (protocol.ServerRequestCodec, error) {
 	// Decode the request body and check if RPC method is valid.
+	decoder := json.NewDecoder(r)
+	if nil == r {
+		return nil, io.EOF
+	}
+
 	req := &serverRequest{}
-	err := json.NewDecoder(r).Decode(req)
+	err := decoder.Decode(req)
 	if err == io.ErrUnexpectedEOF || err == io.EOF {
 		return nil, err
 	}
diff --git a/server/rwc/socket/servlet_handlers.go b/server/rwc/socket/servlet_handlers.go
index a33e468..14724e5 100644
--- a/server/rwc/socket/servlet_handlers.go
+++ b/server/rwc/socket/servlet_handlers.go
@@ -1,6 +1,8 @@
 package socket
 
 import (
+	"io"
+
 	"git.loafle.net/commons_go/rpc"
 	"git.loafle.net/commons_go/rpc/protocol"
 	"git.loafle.net/commons_go/server"
@@ -15,6 +17,10 @@ type ServletReadWriteCloseHandlers struct {
 }
 
 func (srwch *ServletReadWriteCloseHandlers) ReadRequest(servletCTX rpc.ServletContext, codec protocol.ServerCodec, conn interface{}) (protocol.ServerRequestCodec, error) {
+	if nil == conn {
+		return nil, io.EOF
+	}
+
 	soc := conn.(server.Socket)
 	reqCodec, err := codec.NewRequest(soc)
 
@@ -22,6 +28,10 @@ func (srwch *ServletReadWriteCloseHandlers) ReadRequest(servletCTX rpc.ServletCo
 }
 
 func (srwch *ServletReadWriteCloseHandlers) WriteResponse(servletCTX rpc.ServletContext, conn interface{}, reqCodec protocol.ServerRequestCodec, result interface{}, err error) error {
+	if nil == conn {
+		return io.EOF
+	}
+
 	soc := conn.(server.Socket)
 
 	if nil != err {
@@ -38,6 +48,10 @@ func (srwch *ServletReadWriteCloseHandlers) WriteResponse(servletCTX rpc.Servlet
 }
 
 func (srwch *ServletReadWriteCloseHandlers) WriteNotification(servletCTX rpc.ServletContext, conn interface{}, codec protocol.ServerCodec, method string, params interface{}) error {
+	if nil == conn {
+		return io.EOF
+	}
+
 	soc := conn.(server.Socket)
 
 	if wErr := codec.WriteNotification(soc, method, params); nil != wErr {
diff --git a/server/rwc/websocket/fasthttp/servlet_handlers.go b/server/rwc/websocket/fasthttp/servlet_handlers.go
index 0459970..cc60128 100644
--- a/server/rwc/websocket/fasthttp/servlet_handlers.go
+++ b/server/rwc/websocket/fasthttp/servlet_handlers.go
@@ -1,9 +1,8 @@
 package fasthttp
 
 import (
-	"fmt"
+	"io"
 
-	"git.loafle.net/commons_go/logging"
 	"git.loafle.net/commons_go/rpc"
 	"git.loafle.net/commons_go/rpc/protocol"
 	cwf "git.loafle.net/commons_go/websocket_fasthttp"
@@ -19,7 +18,10 @@ type ServletReadWriteCloseHandlers struct {
 }
 
 func (srwch *ServletReadWriteCloseHandlers) ReadRequest(servletCTX rpc.ServletContext, codec protocol.ServerCodec, conn interface{}) (protocol.ServerRequestCodec, error) {
-	logging.Logger().Debug(fmt.Sprintf("ReadRequest: conn %v", conn))
+	if nil == conn {
+		return nil, io.EOF
+	}
+
 	soc := conn.(cwf.Socket)
 	_, r, err := soc.NextReader()
 
@@ -29,7 +31,10 @@ func (srwch *ServletReadWriteCloseHandlers) ReadRequest(servletCTX rpc.ServletCo
 }
 
 func (srwch *ServletReadWriteCloseHandlers) WriteResponse(servletCTX rpc.ServletContext, conn interface{}, requestCodec protocol.ServerRequestCodec, result interface{}, err error) error {
-	logging.Logger().Debug(fmt.Sprintf("WriteResponse: conn %v", conn))
+	if nil == conn {
+		return io.EOF
+	}
+
 	soc := conn.(cwf.Socket)
 
 	wc, wErr := soc.NextWriter(websocket.TextMessage)
@@ -55,7 +60,10 @@ func (srwch *ServletReadWriteCloseHandlers) WriteResponse(servletCTX rpc.Servlet
 }
 
 func (srwch *ServletReadWriteCloseHandlers) WriteNotification(servletCTX rpc.ServletContext, conn interface{}, codec protocol.ServerCodec, method string, params interface{}) error {
-	logging.Logger().Debug(fmt.Sprintf("WriteNotification: conn %v", conn))
+	if nil == conn {
+		return io.EOF
+	}
+
 	soc := conn.(cwf.Socket)
 
 	wc, wErr := soc.NextWriter(websocket.TextMessage)