AFN3.0 cookie

 AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    NSString *URL = [NSString stringWithFormat:@"https://msger/room/myroom/%@",my];

    //    NSMutableDictionary * dict = [NSMutableDictionary dictionary];
    //    [dict setObject:@"31381" forKey:@"userid"];
    //NSLog(@"%@",self.userAgent1);
    NSString *token = @"";
    
    NSString * accessToken= [NSString stringWithFormat:@"accessToken=%@",token];
    [manager.requestSerializer setValue:accessToken forHTTPHeaderField:@"Cookie"];//cookie添加
    [manager.requestSerializer setValue:self.userAgent1 forHTTPHeaderField:@"user-agent"];
    [manager GET:URL parameters:nil progress:^(NSProgress * _Nonnull downloadProgress) {

    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        NSLog(@"%@",responseObject);
       
        NSDictionary *fields = ((NSHTTPURLResponse*)task.response).allHeaderFields;
        NSLog(@"fields = %@",[fields description]);
        NSURL *url = [NSURL URLWithString:URL];
        NSLog(@"\n======================================\n");
        //获取cookie方法1
        NSArray *cookies = [NSHTTPCookie cookiesWithResponseHeaderFields:fields forURL:url];
        for (NSHTTPCookie *cookie in cookies) {
            NSLog(@"cookie,name:= %@,valuie = %@",cookie.name,cookie.value);
        }
        [self endRefresh];
       
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
    }];