method for web download

goutil.go

@@ -6,6 +6,7 @@ import (
 	"flag"
 	"fmt"
 	"io/ioutil"
+	"net/http"
 	"os"
 	"os/exec"
 	"os/user"
@@ -310,3 +311,16 @@ func Notify(head string, body string) error {
 	}
 	return nil
 }
+
+func Download(url string) ([]byte, error) {
+	resp, err := http.Get(url)
+	if err != nil {
+		return nil, errors.New("Download: " + err.Error())
+	}
+	defer resp.Body.Close()
+	data, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, errors.New("Download: " + err.Error())
+	}
+	return data, err
+}