我不确定自己是否做错了什么,但在设置urlRequest.cachePolicy = .useProtocolCachePolicy
并将缓存标头设置为私有时使用max-age "Cache-Control" = "private, max-age=86400";
,缓存无法正常工作
useProtocolCachePolicy应该与private一起使用吗?或者我需要手动将其覆盖为公开?
答案 0 :(得分:0)
我尝试了以下对我来说很好的代码, 使用cachePolicy:NSURLRequestUseProtocolCachePolicy。
根据http标头响应中的cache-control / max-age使缓存过期:
我使用了这个有用的blog
这是我使用的代码:
NSURL * url = [NSURL URLWithString:@"https://yourserver.com"];
NSMutableURLRequest * request = [NSMutableURLRequest requestWithURL:url
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:60.0
];
if (self.session == nil) {
NSURLSessionConfiguration * config = [NSURLSessionConfiguration defaultSessionConfiguration];
self.session = [NSURLSession sessionWithConfiguration:config delegate:self delegateQueue:NSOperationQueue.mainQueue];
}
NSURLSessionDataTask *task = [self.session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if (error != nil) {
NSLog(@"task transport error %@ / %d", error.domain, (int) error.code);
return;
}
NSHTTPURLResponse * httpResponse = (NSHTTPURLResponse*) response;
NSLog(@"task finished with status %d, bytes %zu", (int) httpResponse.statusCode, (size_t) data.length);
NSDictionary * headers = httpResponse.allHeaderFields;
NSLog(@"response-headers %@",headers);
}];
[task resume];