feat: multiple down proxy urls (close #793)

server/controllers/proxy.go

@@ -11,6 +11,7 @@ import (
 	"github.com/go-resty/resty/v2"
 	log "github.com/sirupsen/logrus"
 	"path/filepath"
+	"strings"
 )
 
 func Proxy(c *gin.Context) {
@@ -43,7 +44,7 @@ func Proxy(c *gin.Context) {
 	// 中转时有中转机器使用中转机器，若携带标志位则表明不能再走中转机器了
 	if account.DownProxyUrl != "" && c.Query("d") != "1" {
 		name := utils.Base(rawPath)
-		link := fmt.Sprintf("%s%s?sign=%s", account.DownProxyUrl, rawPath, utils.SignWithToken(name, conf.Token))
+		link := fmt.Sprintf("%s%s?sign=%s", strings.Split(account.DownProxyUrl, "\n")[0], rawPath, utils.SignWithToken(name, conf.Token))
 		c.Redirect(302, link)
 		return
 	}