增加换肤功能

Pods/AliyunOSSiOS/AliyunOSSSDK/OSSURLRequestRetryHandler.m

@@ -0,0 +1,78 @@
+//
+//  OSSURLRequestRetryHandler.m
+//  AliyunOSSSDK
+//
+//  Created by huaixu on 2018/1/22.
+//  Copyright © 2018年 aliyun. All rights reserved.
+//
+
+#import "OSSURLRequestRetryHandler.h"
+#import "OSSNetworkingRequestDelegate.h"
+#import "OSSDefine.h"
+
+@implementation OSSURLRequestRetryHandler
+
+- (OSSNetworkingRetryType)shouldRetry:(uint32_t)currentRetryCount
+                      requestDelegate:(OSSNetworkingRequestDelegate *)delegate
+                             response:(NSHTTPURLResponse *)response
+                                error:(NSError *)error {
+    
+    if (currentRetryCount >= self.maxRetryCount) {
+        return OSSNetworkingRetryTypeShouldNotRetry;
+    }
+    
+    /**
+     When onRecieveData is set, no retry.
+     When the error is task cancellation, no retry.
+     */
+    if (delegate.onRecieveData != nil) {
+        return OSSNetworkingRetryTypeShouldNotRetry;
+    }
+    
+    if ([error.domain isEqualToString:OSSClientErrorDomain]) {
+        if (error.code == OSSClientErrorCodeTaskCancelled) {
+            return OSSNetworkingRetryTypeShouldNotRetry;
+        } else {
+            return OSSNetworkingRetryTypeShouldRetry;
+        }
+    }
+    
+    switch (response.statusCode) {
+        case 403:
+            if ([[[error userInfo] objectForKey:@"Code"] isEqualToString:@"RequestTimeTooSkewed"]) {
+                return OSSNetworkingRetryTypeShouldCorrectClockSkewAndRetry;
+            }
+            break;
+            
+        case 400:
+            if ([[[error userInfo] objectForKey:@"Code"] isEqualToString:@"InvalidArgument"] &&
+                [[[error userInfo] objectForKey:@"Message"] isEqualToString:@"Invalid signing date in Authorization header."]) {
+                return OSSNetworkingRetryTypeShouldCorrectClockSkewAndRetry;
+            }
+            break;
+            
+        default:
+            break;
+    }
+    
+    return OSSNetworkingRetryTypeShouldNotRetry;
+}
+
+- (NSTimeInterval)timeIntervalForRetry:(uint32_t)currentRetryCount retryType:(OSSNetworkingRetryType)retryType {
+    switch (retryType) {
+        case OSSNetworkingRetryTypeShouldCorrectClockSkewAndRetry:
+        case OSSNetworkingRetryTypeShouldRefreshCredentialsAndRetry:
+            return 0;
+            
+        default:
+            return pow(2, currentRetryCount) * 200 / 1000;
+    }
+}
+
++ (instancetype)defaultRetryHandler {
+    OSSURLRequestRetryHandler * retryHandler = [OSSURLRequestRetryHandler new];
+    retryHandler.maxRetryCount = OSSDefaultRetryCount;
+    return retryHandler;
+}
+
+@end