标签:ctf requests can RoCE 情况 directory rman delegate count
原理:先给NSURLSession地Configuration设置一个内存和本地代理,原来的网络请求结束后会查找缓存的代理字典,并执行代理对象对应的操作方法,需要做的就是拦截错误的方法,返回缓存的数据
AFURLSessionManager.m
- (instancetype)initWithSessionConfiguration:(NSURLSessionConfiguration *)configuration { self = [super init]; if (!self) { return nil; } if (!configuration) { configuration = [NSURLSessionConfiguration defaultSessionConfiguration]; } self.sessionConfiguration = configuration; #pragma mark 在这里给网络加上一个缓存 [self addURLCacheForRequestSession:configuration]; self.operationQueue = [[NSOperationQueue alloc] init]; self.operationQueue.maxConcurrentOperationCount = 1; self.session = [NSURLSession sessionWithConfiguration:self.sessionConfiguration delegate:self delegateQueue:self.operationQueue]; self.responseSerializer = [AFJSONResponseSerializer serializer]; self.securityPolicy = [AFSecurityPolicy defaultPolicy]; #if !TARGET_OS_WATCH self.reachabilityManager = [AFNetworkReachabilityManager sharedManager]; #endif self.mutableTaskDelegatesKeyedByTaskIdentifier = [[NSMutableDictionary alloc] init]; self.lock = [[NSLock alloc] init]; self.lock.name = AFURLSessionManagerLockName; [self.session getTasksWithCompletionHandler:^(NSArray *dataTasks, NSArray *uploadTasks, NSArray *downloadTasks) { for (NSURLSessionDataTask *task in dataTasks) { [self addDelegateForDataTask:task uploadProgress:nil downloadProgress:nil completionHandler:nil]; } for (NSURLSessionUploadTask *uploadTask in uploadTasks) { [self addDelegateForUploadTask:uploadTask progress:nil completionHandler:nil]; } for (NSURLSessionDownloadTask *downloadTask in downloadTasks) { [self addDelegateForDownloadTask:downloadTask progress:nil destination:nil completionHandler:nil]; } }]; return self; } #pragma mark 添加缓存 -(void)addURLCacheForRequestSession:(NSURLSessionConfiguration*)configuration { if ([[[UIDevice currentDevice] systemVersion] compare:@"8.2" options:NSNumericSearch] == NSOrderedAscending) { configuration.URLCache = [NSURLCache sharedURLCache]; } else { configuration.URLCache = [[NSURLCache alloc] initWithMemoryCapacity:5 * 1024 * 1024 diskCapacity:20 * 1024 * 1024 diskPath:@"customer_request_cache"]; } }
AFURLSessionManagerTaskDelegate 实现方法添加部分代码
#pragma mark - NSURLSessionTaskDelegate - (void)URLSession:(__unused NSURLSession *)session task:(NSURLSessionTask *)task didCompleteWithError:(NSError *)error { __strong AFURLSessionManager *manager = self.manager; __block id responseObject = nil; __block NSMutableDictionary *userInfo = [NSMutableDictionary dictionary]; userInfo[AFNetworkingTaskDidCompleteResponseSerializerKey] = manager.responseSerializer; //Performance Improvement from #2672 NSData *data = nil; if (self.mutableData) { data = [self.mutableData copy]; //We no longer need the reference, so nil it out to gain back some memory. self.mutableData = nil; } if (self.downloadFileURL) { userInfo[AFNetworkingTaskDidCompleteAssetPathKey] = self.downloadFileURL; } else if (data) { userInfo[AFNetworkingTaskDidCompleteResponseDataKey] = data; } if (error) { #pragma mark 网络错误时读取网络缓存数据 if (error.code == -1009) { NSURLCache *cache = self.manager.session.configuration.URLCache; if (cache) { NSCachedURLResponse *response = [cache cachedResponseForRequest:task.currentRequest]; dispatch_async(url_session_manager_processing_queue(), ^{ NSError *serializationError = nil; responseObject = [manager.responseSerializer responseObjectForResponse:response.response data:response.data error:&serializationError]; if (self.downloadFileURL) { responseObject = self.downloadFileURL; } if (responseObject) { userInfo[AFNetworkingTaskDidCompleteSerializedResponseKey] = responseObject; } if (serializationError) { userInfo[AFNetworkingTaskDidCompleteErrorKey] = serializationError; } dispatch_group_async(manager.completionGroup ?: url_session_manager_completion_group(), manager.completionQueue ?: dispatch_get_main_queue(), ^{ if (self.completionHandler) { self.completionHandler(response.response, responseObject, serializationError); } dispatch_async(dispatch_get_main_queue(), ^{ [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingTaskDidCompleteNotification object:task userInfo:userInfo]; }); }); }); } } else { userInfo[AFNetworkingTaskDidCompleteErrorKey] = error; dispatch_group_async(manager.completionGroup ?: url_session_manager_completion_group(), manager.completionQueue ?: dispatch_get_main_queue(), ^{ if (self.completionHandler) { self.completionHandler(task.response, responseObject, error); } dispatch_async(dispatch_get_main_queue(), ^{ [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingTaskDidCompleteNotification object:task userInfo:userInfo]; }); }); } } else { dispatch_async(url_session_manager_processing_queue(), ^{ NSError *serializationError = nil; responseObject = [manager.responseSerializer responseObjectForResponse:task.response data:data error:&serializationError]; if (self.downloadFileURL) { responseObject = self.downloadFileURL; } if (responseObject) { userInfo[AFNetworkingTaskDidCompleteSerializedResponseKey] = responseObject; } if (serializationError) { userInfo[AFNetworkingTaskDidCompleteErrorKey] = serializationError; } dispatch_group_async(manager.completionGroup ?: url_session_manager_completion_group(), manager.completionQueue ?: dispatch_get_main_queue(), ^{ if (self.completionHandler) { self.completionHandler(task.response, responseObject, serializationError); } dispatch_async(dispatch_get_main_queue(), ^{ [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingTaskDidCompleteNotification object:task userInfo:userInfo]; }); }); }); } }
//网络请求错误代码 enum { NSURLErrorUnknown = -1, NSURLErrorCancelled = -999, NSURLErrorBadURL = -1000, NSURLErrorTimedOut = -1001, NSURLErrorUnsupportedURL = -1002, NSURLErrorCannotFindHost = -1003, NSURLErrorCannotConnectToHost = -1004, NSURLErrorDataLengthExceedsMaximum = -1103, NSURLErrorNetworkConnectionLost = -1005, NSURLErrorDNSLookupFailed = -1006, NSURLErrorHTTPTooManyRedirects = -1007, NSURLErrorResourceUnavailable = -1008, NSURLErrorNotConnectedToInternet = -1009, NSURLErrorRedirectToNonExistentLocation = -1010, NSURLErrorBadServerResponse = -1011, NSURLErrorUserCancelledAuthentication = -1012, NSURLErrorUserAuthenticationRequired = -1013, NSURLErrorZeroByteResource = -1014, NSURLErrorCannotDecodeRawData = -1015, NSURLErrorCannotDecodeContentData = -1016, NSURLErrorCannotParseResponse = -1017, NSURLErrorInternationalRoamingOff = -1018, NSURLErrorCallIsActive = -1019, NSURLErrorDataNotAllowed = -1020, NSURLErrorRequestBodyStreamExhausted = -1021, NSURLErrorFileDoesNotExist = -1100, NSURLErrorFileIsDirectory = -1101, NSURLErrorNoPermissionsToReadFile = -1102, NSURLErrorSecureConnectionFailed = -1200, NSURLErrorServerCertificateHasBadDate = -1201, NSURLErrorServerCertificateUntrusted = -1202, NSURLErrorServerCertificateHasUnknownRoot = -1203, NSURLErrorServerCertificateNotYetValid = -1204, NSURLErrorClientCertificateRejected = -1205, NSURLErrorClientCertificateRequired = -1206, NSURLErrorCannotLoadFromNetwork = -2000, NSURLErrorCannotCreateFile = -3000, NSURLErrorCannotOpenFile = -3001, NSURLErrorCannotCloseFile = -3002, NSURLErrorCannotWriteToFile = -3003, NSURLErrorCannotRemoveFile = -3004, NSURLErrorCannotMoveFile = -3005, NSURLErrorDownloadDecodingFailedMidStream = -3006, NSURLErrorDownloadDecodingFailedToComplete = -3007 }
给AFNetworking添加请求缓存功能实现在没有网络的情况下返回缓存数据
标签:ctf requests can RoCE 情况 directory rman delegate count
原文地址:https://www.cnblogs.com/yuxiaoyiyou/p/9592111.html