diff --git a/http.go b/http.go
index e909b75..42c9b45 100644
--- a/http.go
+++ b/http.go
@@ -6,7 +6,7 @@ import (
 	"bytes"
 	"context"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net"
 	"net/http"
 	"net/url"
@@ -199,7 +199,7 @@ func newRequest(ctx context.Context, log logger.Logger, addr string, req client.
 
 	var hreq *http.Request
 	if len(b) > 0 {
-		hreq, err = http.NewRequestWithContext(ctx, method, u.String(), ioutil.NopCloser(bytes.NewBuffer(b)))
+		hreq, err = http.NewRequestWithContext(ctx, method, u.String(), io.NopCloser(bytes.NewBuffer(b)))
 		hreq.ContentLength = int64(len(b))
 		header.Set("Content-Length", fmt.Sprintf("%d", hreq.ContentLength))
 	} else {
diff --git a/options.go b/options.go
index d860643..20b220e 100644
--- a/options.go
+++ b/options.go
@@ -1,7 +1,6 @@
 package http
 
 import (
-	"go.unistack.org/micro/v4/client"
 	"net"
 	"net/http"
 
@@ -27,104 +26,73 @@ var (
 	DefaultMaxSendMsgSize = 1024 * 1024 * 4
 )
 
-type poolMaxStreams struct{}
-
 // PoolMaxStreams maximum streams on a connectioin
 func PoolMaxStreams(n int) options.Option {
-	return func(i interface{}) error {
-
-	}
-	return options.ContextOption(poolMaxStreams{}, n)
+	return options.NewOption("PoolMaxStreams")(n)
 }
 
-type poolMaxIdle struct{}
-
 // PoolMaxIdle maximum idle conns of a pool
-func PoolMaxIdle(d int) options.Option {
-	return options.ContextOption(poolMaxIdle{}, d)
+func PoolMaxIdle(n int) options.Option {
+	return options.NewOption("PoolMaxIdle")(n)
 }
 
-type maxRecvMsgSizeKey struct{}
-
 // MaxRecvMsgSize set the maximum size of message that client can receive.
-func MaxRecvMsgSize(s int) options.Option {
-	return options.ContextOption(maxRecvMsgSizeKey{}, s)
+func MaxRecvMsgSize(n int) options.Option {
+	return options.NewOption("MaxRecvMsgSize")(n)
 }
 
-type maxSendMsgSizeKey struct{}
-
 // MaxSendMsgSize set the maximum size of message that client can send.
-func MaxSendMsgSize(s int) options.Option {
-	return options.ContextOption(maxSendMsgSizeKey{}, s)
+func MaxSendMsgSize(n int) options.Option {
+	return options.NewOption("MaxSendMsgSize")(n)
 }
 
-type httpClientKey struct{}
-
 // nolint: golint
 // HTTPClient pass http.Client option to client Call
 func HTTPClient(c *http.Client) options.Option {
-	return options.ContextOption(httpClientKey{}, c)
+	return options.NewOption("HTTPClient")(c)
 }
 
-type httpDialerKey struct{}
-
 // nolint: golint
 // HTTPDialer pass net.Dialer option to client
 func HTTPDialer(d *net.Dialer) options.Option {
-	return options.ContextOption(httpDialerKey{}, d)
+	return options.NewOption("HTTPDialer")(d)
 }
 
-type methodKey struct{}
-
 // Method pass method option to client Call
-func Method(m string) client.CallOptions {
-	return options.Context(methodKey{}, m)
+func Method(m string) options.Option {
+	return options.NewOption("Method")(m)
 }
 
-type pathKey struct{}
-
 // Path spcecifies path option to client Call
 func Path(p string) options.Option {
-	return options.ContextOption(pathKey{}, p)
+	return options.NewOption("Path")(p)
 }
 
-type bodyKey struct{}
-
 // Body specifies body option to client Call
 func Body(b string) options.Option {
-	return options.ContextOption(bodyKey{}, b)
+	return options.NewOption("Body")(b)
 }
 
-type errorMapKey struct{}
-
 func ErrorMap(m map[string]interface{}) options.Option {
-	return options.ContextOption(errorMapKey{}, m)
+	return options.NewOption("ErrorMap")(m)
 }
 
-type structTagsKey struct{}
-
 // StructTags pass tags slice option to client Call
 func StructTags(tags []string) options.Option {
-	return options.ContextOption(structTagsKey{}, tags)
+	return options.NewOption("StructTags")(tags)
 }
 
-type metadataKey struct{}
-
 // Metadata pass metadata to client Call
 func Metadata(md metadata.Metadata) options.Option {
-	return options.ContextOption(metadataKey{}, md)
+	return options.NewOption("Metadata")(md)
 }
 
-type cookieKey struct{}
-
 // Cookie pass cookie to client Call
 func Cookie(cookies ...string) options.Option {
-	return options.ContextOption(cookieKey{}, cookies)
+	return options.NewOption("Cookie")(cookies)
 }
 
-type headerKey struct{}
-
 // Header pass cookie to client Call
 func Header(headers ...string) options.Option {
-	return options.ContextOption(headerKey{}, headers)
+	return options.NewOption("Header")(headers)
 }