fix: decode body if enable gzip (AlistGo#7003)

internal/net/serve.go

@@ -1,6 +1,7 @@
 package net
 
 import (
+	"compress/gzip"
 	"context"
 	"fmt"
 	"io"
@@ -222,8 +223,19 @@ func RequestHttp(ctx context.Context, httpMethod string, headerOverride http.Hea
 	}
 	// TODO clean header with blocklist or passlist
 	res.Header.Del("set-cookie")
+	var reader io.Reader
 	if res.StatusCode >= 400 {
-		all, _ := io.ReadAll(res.Body)
+		// 根据 Content-Encoding 判断 Body 是否压缩
+		switch res.Header.Get("Content-Encoding") {
+		case "gzip":
+			// 使用gzip.NewReader解压缩
+			reader, _ = gzip.NewReader(res.Body)
+			defer reader.(*gzip.Reader).Close()
+		default:
+			// 没有Content-Encoding，直接读取
+			reader = res.Body
+		}
+		all, _ := io.ReadAll(reader)
 		_ = res.Body.Close()
 		msg := string(all)
 		log.Debugln(msg)