afn

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

1.设置返回数据接收的类型
AFURLResponseSerialization.m

- (instancetype)init {
    self = [super init];
    if (!self) {
        return nil;
    }
    //添加
    self.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/json", @"text/javascript", @"text/html", nil];

    return self;
}

2.请求限时

    manager.requestSerializer.timeoutInterval = 15;

3.打印URL

找到AFURLRequestSerialization这个.m
找到requestBySerializingRequest: withParameters: error:这个方法
NSLog(@"URL: %@",mutableRequest.URL.absoluteString);

afnetwoking 3.0 默认 response为json, request 为 serieror;所以不用设置了。

response 一般都设置成json，因为后台返回数据为json。
request 一般不用设置，或设置成json，因为request不设置不报错，上传参数一般都是json格式

4.https
参考

    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.securityPolicy = [AFSecurityPolicy policyWithPinningMode:AFSSLPinningModeCertificate];
    manager.securityPolicy.allowInvalidCertificates = YES;
    NSString *cerPath = [[NSBundle mainBundle] pathForResource:@"文件名" ofType:@"cer"];
    NSData *certData = [NSData dataWithContentsOfFile:cerPath];
    manager.securityPolicy.allowInvalidCertificates = YES;
    manager.securityPolicy.validatesDomainName = YES;
    manager.securityPolicy.pinnedCertificates = [NSSet setWithObjects:certData, nil];