diff --git a/down/down.go b/down/down.go
index 66fb9e81..fdf7fb6a 100644
--- a/down/down.go
+++ b/down/down.go
@@ -4,38 +4,39 @@ import (
 	"bytes"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"mime"
 	"net/http"
+	"net/http/cookiejar"
+	"net/url"
 	"os"
 	"strconv"
 	"strings"
 )
 
-// Resolve 解析下载请求
+// Resolve return the file response to be downloaded
 func Resolve(request *Request) (*Response, error) {
+	// Build request
 	httpRequest, err := http.NewRequest(strings.ToUpper(request.Method), request.URL, nil)
 	if err != nil {
 		return nil, err
 	}
-	/* for k, v := range request.Header {
+	for k, v := range request.Header {
 		httpRequest.Header.Add(k, v)
-	} */
-	httpClient := &http.Client{}
+	}
+	// Use "Range" header to resolve
+	httpRequest.Header.Add("Range", "bytes=0-0")
+	// Cookie handle
+	jar, _ := cookiejar.New(nil)
+	httpClient := &http.Client{Jar: jar}
 	response, err := httpClient.Do(httpRequest)
 	if err != nil {
 		return nil, err
 	}
 	if response.StatusCode != 200 && response.StatusCode != 206 {
-		fmt.Println(response.Header)
-		body, _ := ioutil.ReadAll(response.Body)
-		fmt.Println(string(body))
 		return nil, fmt.Errorf("Response status error:%d", response.StatusCode)
 	}
-
 	ret := &Response{}
-
-	//解析文件名
+	// Get file name by "Content-Disposition"
 	contentDisposition := response.Header.Get("Content-Disposition")
 	if contentDisposition != "" {
 		_, params, _ := mime.ParseMediaType(contentDisposition)
@@ -44,19 +45,51 @@ func Resolve(request *Request) (*Response, error) {
 			ret.Name = filename
 		}
 	}
+	// Get file name by URL
 	if ret.Name == "" {
-
+		parse, err := url.Parse(request.URL)
+		if err == nil {
+			// e.g. /files/test.txt => test.txt
+			ret.Name = subLastSlash(parse.Path)
+		}
 	}
-	//解析文件大小
-	contentLength := response.Header.Get("Content-Length")
-	if contentLength != "" {
-		ret.size, _ = strconv.ParseInt(contentLength, 10, 64)
+	// Unknow file name
+	if ret.Name == "" {
+		ret.Name = "unknow"
+	}
+	// Is support range
+	ret.Range = response.StatusCode == 206
+	// Get file size
+	if ret.Range {
+		contentRange := response.Header.Get("Content-Range")
+		if contentRange != "" {
+			// e.g. bytes 0-1000/1001 => 1001
+			total := subLastSlash(contentRange)
+			if total != "" && total != "*" {
+				parse, err := strconv.ParseInt(total, 10, 64)
+				if err != nil {
+					return nil, err
+				}
+				ret.Size = parse
+			}
+		}
+	} else {
+		contentLength := response.Header.Get("Content-Length")
+		if contentLength != "" {
+			ret.Size, _ = strconv.ParseInt(contentLength, 10, 64)
+		}
 	}
-	//判断是否支持分段下载
-	ret.Partial = ret.size > 0 && response.StatusCode == 206
 	return ret, nil
 }
 
+func subLastSlash(str string) string {
+	index := strings.LastIndex(str, "/")
+	if index != -1 {
+		return str[index+1:]
+	}
+	return ""
+}
+
 // Down 下载
 func Down(request *Request) {
 	httpRequest, err := http.NewRequest(request.Method, request.URL, bytes.NewReader(request.content))
diff --git a/down/down_test.go b/down/down_test.go
index a4bb1e9b..0a2aac10 100644
--- a/down/down_test.go
+++ b/down/down_test.go
@@ -1,7 +1,10 @@
 package down
 
 import (
+	"fmt"
+	"net/url"
 	"reflect"
+	"strings"
 	"testing"
 )
 
@@ -42,6 +45,7 @@ func TestDown(t *testing.T) {
 }
 
 func TestResolve(t *testing.T) {
+	// os.Setenv("HTTP_PROXY", "http://127.0.0.1:8888")
 	type args struct {
 		request *Request
 	}
@@ -56,19 +60,19 @@ func TestResolve(t *testing.T) {
 			args{
 				&Request{
 					"get",
-					"https://github.com/proxyee-down-org/proxyee-down/releases/download/3.4/proxyee-down-main.jar",
+					"http://github.com/proxyee-down-org/proxyee-down/releases/download/3.4/proxyee-down-main.jar",
 					map[string]string{
 						"Host":            "github.com",
 						"User-Agent":      "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36",
 						"Accept":          "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8",
-						"Referer":         "https://github.com/proxyee-down-org/proxyee-down/releases",
+						"Referer":         "http://github.com/proxyee-down-org/proxyee-down/releases",
 						"Accept-Encoding": "gzip, deflate, br",
 						"Accept-Language": "zh-CN,zh;q=0.9,en;q=0.8",
 					},
 					nil,
 				},
 			},
-			&Response{"proxyee-down-main.jar", 30159703, false},
+			&Response{"proxyee-down-main.jar", 30159703, true},
 			false,
 		},
 	}
@@ -85,3 +89,14 @@ func TestResolve(t *testing.T) {
 		})
 	}
 }
+
+func TestTemp(t *testing.T) {
+	parse, _ := url.Parse("http://www.baidu.com/asda/text.txt?a=11&b=333")
+	arr := strings.Split(parse.Path, "/")
+	for i := range arr {
+		fmt.Println(arr[i])
+	}
+	// var begin, end, total int64
+	//fmt.Sscanf("bytes 0-1000/1001", "%s %d-%d/%d", _, &begin, &end, &total)
+	//fmt.Printf("%d-%d/%d", begin, end, total)
+}
diff --git a/down/response.go b/down/response.go
index 569c010e..5306f76d 100644
--- a/down/response.go
+++ b/down/response.go
@@ -1,7 +1,7 @@
 package down
 
 type Response struct {
-	Name    string
-	size    int64
-	Partial bool
+	Name  string
+	Size  int64
+	Range bool
 }
diff --git a/go.mod b/go.mod
index 1d25c50c..efb856c6 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,15 @@ module pdown-core
 go 1.12
 
 require (
-	github.com/karalabe/xgo v0.0.0-20190301120235-2d6d1848fb02 // indirect
+	github.com/getlantern/context v0.0.0-20190109183933-c447772a6520 // indirect
+	github.com/getlantern/errors v0.0.0-20190325191628-abdb3e3e36f7 // indirect
+	github.com/getlantern/golog v0.0.0-20170508214112-cca714f7feb5 // indirect
+	github.com/getlantern/hex v0.0.0-20190417191902-c6586a6fe0b7 // indirect
+	github.com/getlantern/hidden v0.0.0-20190325191715-f02dbb02be55 // indirect
+	github.com/getlantern/ops v0.0.0-20190325191751-d70cb0d6f85f // indirect
+	github.com/getlantern/systray v0.0.0-20190131073753-26d5b920200d
+	github.com/go-stack/stack v1.8.0 // indirect
+	github.com/oxtoacart/bpool v0.0.0-20190227141107-8c4636f812cc // indirect
+	github.com/stretchr/testify v1.3.0 // indirect
 	github.com/zserge/webview v0.0.0-20190123072648-16c93bcaeaeb
 )
diff --git a/go.sum b/go.sum
index d9780b23..bce638ef 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,27 @@
-github.com/karalabe/xgo v0.0.0-20190301120235-2d6d1848fb02 h1:nI4Q7WQDcng8eRmi8bRP1SXlJIYLkgdgR7ZhJuzPbhs=
-github.com/karalabe/xgo v0.0.0-20190301120235-2d6d1848fb02/go.mod h1:iYGcTYIPUvEWhFo6aKUuLchs+AV4ssYdyuBbQJZGcBk=
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/getlantern/context v0.0.0-20190109183933-c447772a6520 h1:NRUJuo3v3WGC/g5YiyF790gut6oQr5f3FBI88Wv0dx4=
+github.com/getlantern/context v0.0.0-20190109183933-c447772a6520/go.mod h1:L+mq6/vvYHKjCX2oez0CgEAJmbq1fbb/oNJIWQkBybY=
+github.com/getlantern/errors v0.0.0-20190325191628-abdb3e3e36f7 h1:6uJ+sZ/e03gkbqZ0kUG6mfKoqDb4XMAzMIwlajq19So=
+github.com/getlantern/errors v0.0.0-20190325191628-abdb3e3e36f7/go.mod h1:l+xpFBrCtDLpK9qNjxs+cHU6+BAdlBaxHqikB6Lku3A=
+github.com/getlantern/golog v0.0.0-20170508214112-cca714f7feb5 h1:Okd7vkn9CfIgDBj1ST/vtBTCfD/kxIhYD412K+FRKPc=
+github.com/getlantern/golog v0.0.0-20170508214112-cca714f7feb5/go.mod h1:Vwx1Cg64gCdIalad44uvQsKZw6LsVczIKZrUBStEjVw=
+github.com/getlantern/hex v0.0.0-20190417191902-c6586a6fe0b7 h1:micT5vkcr9tOVk1FiH8SWKID8ultN44Z+yzd2y/Vyb0=
+github.com/getlantern/hex v0.0.0-20190417191902-c6586a6fe0b7/go.mod h1:dD3CgOrwlzca8ed61CsZouQS5h5jIzkK9ZWrTcf0s+o=
+github.com/getlantern/hidden v0.0.0-20190325191715-f02dbb02be55 h1:XYzSdCbkzOC0FDNrgJqGRo8PCMFOBFL9py72DRs7bmc=
+github.com/getlantern/hidden v0.0.0-20190325191715-f02dbb02be55/go.mod h1:6mmzY2kW1TOOrVy+r41Za2MxXM+hhqTtY3oBKd2AgFA=
+github.com/getlantern/ops v0.0.0-20190325191751-d70cb0d6f85f h1:wrYrQttPS8FHIRSlsrcuKazukx/xqO/PpLZzZXsF+EA=
+github.com/getlantern/ops v0.0.0-20190325191751-d70cb0d6f85f/go.mod h1:D5ao98qkA6pxftxoqzibIBBrLSUli+kYnJqrgBf9cIA=
+github.com/getlantern/systray v0.0.0-20190131073753-26d5b920200d h1:4P2eDMAoQcQoWIIKCNIkuVbQb+paRmpMxVXVfbs7B4U=
+github.com/getlantern/systray v0.0.0-20190131073753-26d5b920200d/go.mod h1:7Splj4WBQSps8jODnMgrIV6goKL0N1HR+mhCAEVWlA0=
+github.com/go-stack/stack v1.8.0 h1:5SgMzNM5HxrEjV0ww2lTmX6E2Izsfxas4+YHWRs3Lsk=
+github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
+github.com/oxtoacart/bpool v0.0.0-20190227141107-8c4636f812cc h1:uhnyuvDwdKbjemAXHKsiEZOPagHim2nRjMcazH1g26A=
+github.com/oxtoacart/bpool v0.0.0-20190227141107-8c4636f812cc/go.mod h1:L3UMQOThbttwfYRNFOWLLVXMhk5Lkio4GGOtw5UrxS0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/zserge/webview v0.0.0-20190123072648-16c93bcaeaeb h1:zVjnyZIM7UtkG3dNckiudIm+TUHkZqi5xlVQPd3J6/c=
 github.com/zserge/webview v0.0.0-20190123072648-16c93bcaeaeb/go.mod h1:a1CV8KR4Dd1eP2g+mEijGOp+HKczwdKHWyx0aPHKvo4=
diff --git a/main.go b/main.go
index 02043b31..59bd0db5 100644
--- a/main.go
+++ b/main.go
@@ -1,9 +1,26 @@
 package main
 
 import "github.com/zserge/webview"
+import "github.com/getlantern/systray"
 
 func main() {
+	systray.Run(onReady,onExit)
 	// Open wikipedia in a 800x600 resizable window
 	webview.Open("Minimal webview example",
 		"https://www.baidu.com", 800, 600, true)
+}
+
+
+func onReady() {
+	systray.SetIcon(icon.Data)
+	systray.SetTitle("Awesome App")
+	systray.SetTooltip("Pretty awesome超级棒")
+	mQuit := systray.AddMenuItem("Quit", "Quit the whole app")
+
+	// Sets the icon of a menu item. Only available on Mac.
+	mQuit.SetIcon(icon.Data)
+}
+
+func onExit() {
+	// clean up here
 }
\ No newline at end of file