fix: IP address is empty in unix socket mode (#1314)

pkg/conf/conf.go

@@ -35,7 +35,8 @@ type ssl struct {
 }
 
 type unix struct {
-	Listen string
+	Listen      string
+	ProxyHeader string `validate:"required_with=Listen"`
 }
 
 // slave 作为slave存储端配置

pkg/conf/defaults.go

@@ -45,7 +45,8 @@ var SSLConfig = &ssl{
 }
 
 var UnixConfig = &unix{
-	Listen: "",
+	Listen:      "",
+	ProxyHeader: "X-Forwarded-For",
 }
 
 var OptionOverwrite = map[string]interface{}{}