diff --git a/httpclient.go b/httpclient.go
index f771a21..3245981 100644
--- a/httpclient.go
+++ b/httpclient.go
@@ -1,6 +1,9 @@
 package jpushclient
 
 import (
+	"bytes"
+	"io/ioutil"
+	"net/http"
 	"time"
 )
 
@@ -39,3 +42,30 @@ func SendPostBytes(url string, content []byte, authCode string) (string, error)
 
 	return req.String()
 }
+
+func SendPostBytes2(url string, data []byte, authCode string) (string, error) {
+
+	client := &http.Client{}
+	req, err := http.NewRequest("POST", url, bytes.NewBuffer(data))
+	req.Header.Add("Charset", CHARSET)
+	req.Header.Add("Authorization", authCode)
+	req.Header.Add("Content-Type", CONTENT_TYPE_JSON)
+	resp, err := client.Do(req)
+
+	if err != nil {
+		if resp != nil {
+			resp.Body.Close()
+		}
+		return "", err
+	}
+	if resp == nil {
+		return "", nil
+	}
+
+	defer resp.Body.Close()
+	r, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return "", err
+	}
+	return string(r), nil
+}
diff --git a/pushclient.go b/pushclient.go
index e1d1e11..f1a78a4 100644
--- a/pushclient.go
+++ b/pushclient.go
@@ -2,7 +2,6 @@ package jpushclient
 
 import (
 	"encoding/base64"
-	"encoding/json"
 	"errors"
 	"strings"
 )
@@ -29,13 +28,8 @@ func NewPushClient(secret, appKey string) *PushClient {
 	return pusher
 }
 
-func (this *PushClient) Send(builder interface{}) (string, error) {
-	content, err := json.Marshal(builder)
-	if err != nil {
-		return "", err
-	}
-
-	return this.SendPushBytes(content)
+func (this *PushClient) Send(data []byte) (string, error) {
+	return this.SendPushBytes(data)
 }
 
 func (this *PushClient) SendPushString(content string) (string, error) {
@@ -51,7 +45,8 @@ func (this *PushClient) SendPushString(content string) (string, error) {
 }
 
 func (this *PushClient) SendPushBytes(content []byte) (string, error) {
-	ret, err := SendPostBytes(this.BaseUrl, content, this.AuthCode)
+	//ret, err := SendPostBytes(this.BaseUrl, content, this.AuthCode)
+	ret, err := SendPostBytes2(this.BaseUrl, content, this.AuthCode)
 	if err != nil {
 		return ret, err
 	}