解决了语音上传到问题，接下来要解决下载播放问题

Pods/Qiniu/QiniuSDK/Http/Dns/QNDnsCacheFile.h

@@ -0,0 +1,29 @@
+//
+//  QNDnsCacheFile.h
+//  QnDNS
+//
+//  Created by yangsen on 2020/3/26.
+//  Copyright © 2020 com.qiniu. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "QNRecorderDelegate.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface QNDnsCacheFile : NSObject<QNRecorderDelegate>
+
+/// DNS解析信息本地缓存路径
+@property(nonatomic,  copy, readonly)NSString *directory;
+
+/// 构造方法 路径不存在，或进行创建，创建失败返回为nil
+/// @param directory 路径
+/// @param error 构造错误时，会有值
++ (instancetype _Nullable)dnsCacheFile:(NSString *)directory
+                                 error:(NSError **)error;
+
+- (void)clearCache:(NSError **)error;
+
+@end
+
+NS_ASSUME_NONNULL_END