merge upstream

Signed-off-by: wozulong <>

common/constants.go

@@ -22,6 +22,7 @@ var StartTime = time.Now().Unix() // unit: second
 var Version = "v0.0.0"            // this hard coding will be replaced automatically when building, no need to manually change
 var SystemName = "New API"
 var ServerAddress = "http://localhost:3000"
+var OutProxyUrl = ""
 var Footer = ""
 var Logo = ""
 var TopUpLink = ""

common/image.go

@@ -8,7 +8,6 @@ import (
 	"golang.org/x/image/webp"
 	"image"
 	"io"
-	"net/http"
 	"strings"
 )
 
@@ -32,7 +31,7 @@ func DecodeBase64ImageData(base64String string) (image.Config, string, string, e
 }
 
 func IsImageUrl(url string) (bool, error) {
-	resp, err := http.Head(url)
+	resp, err := ProxiedHttpHead(url, OutProxyUrl)
 	if err != nil {
 		return false, err
 	}
@@ -48,7 +47,7 @@ func GetImageFromUrl(url string) (mimeType string, data string, err error) {
 	if !isImage {
 		return
 	}
-	resp, err := http.Get(url)
+	resp, err := ProxiedHttpGet(url, OutProxyUrl)
 	if err != nil {
 		return
 	}
@@ -64,7 +63,7 @@ func GetImageFromUrl(url string) (mimeType string, data string, err error) {
 }
 
 func DecodeUrlImageData(imageUrl string) (image.Config, string, error) {
-	response, err := http.Get(imageUrl)
+	response, err := ProxiedHttpGet(imageUrl, OutProxyUrl)
 	if err != nil {
 		SysLog(fmt.Sprintf("fail to get image from url: %s", err.Error()))
 		return image.Config{}, "", err

common/utils.go

@@ -1,13 +1,18 @@
 package common
 
 import (
+	"context"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"github.com/google/uuid"
+	"golang.org/x/net/proxy"
 	"html/template"
 	"log"
 	"math/rand"
 	"net"
+	"net/http"
+	"net/url"
 	"os"
 	"os/exec"
 	"runtime"
@@ -267,3 +272,56 @@ func StrToMap(str string) map[string]interface{} {
 	}
 	return m
 }
+
+func GetProxiedHttpClient(proxyUrl string) (*http.Client, error) {
+	if "" == proxyUrl {
+		return &http.Client{}, nil
+	}
+
+	u, err := url.Parse(proxyUrl)
+	if err != nil {
+		return nil, err
+	}
+
+	if strings.HasPrefix(proxyUrl, "http") {
+
+		return &http.Client{
+			Transport: &http.Transport{
+				Proxy: http.ProxyURL(u),
+			},
+		}, nil
+	} else if strings.HasPrefix(proxyUrl, "socks") {
+		dialer, err := proxy.FromURL(u, proxy.Direct)
+		if err != nil {
+			return nil, err
+		}
+
+		return &http.Client{
+			Transport: &http.Transport{
+				DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
+					return dialer.(proxy.ContextDialer).DialContext(ctx, network, addr)
+				},
+			},
+		}, nil
+	}
+
+	return nil, errors.New("unsupported proxy type")
+}
+
+func ProxiedHttpGet(url, proxyUrl string) (*http.Response, error) {
+	client, err := GetProxiedHttpClient(proxyUrl)
+	if err != nil {
+		return nil, err
+	}
+
+	return client.Get(url)
+}
+
+func ProxiedHttpHead(url, proxyUrl string) (*http.Response, error) {
+	client, err := GetProxiedHttpClient(proxyUrl)
+	if err != nil {
+		return nil, err
+	}
+
+	return client.Head(url)
+}