参考博客：

http://blog.csdn.net/github_34613936/article/details/51490032

NSURLSession自签名

 NSString *urlString = @"https://192.168.64.43:443/get/test";
    NSURL *url = [NSURL URLWithString:urlString];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:10.0f];
    NSURLSession *session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration] delegate:self delegateQueue:[NSOperationQueue mainQueue]];
    NSURLSessionDataTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
       
        if (error) {
            NSLog(@"-->%@",error.description);
            return;
        }
        NSString *str = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
        NSLog(@"success -->%@",str);
    }];
    [task resume];

#设置NSURLSessionDataDelegate委托，实现方向如下

-(void)URLSession:(NSURLSession *)session didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition, NSURLCredential * _Nullable))completionHandler {
    
    // 判断是否是信任服务器证书
    if(challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodServerTrust) {
        // 告诉服务器，客户端信任证书
        // 创建凭据对象
        NSURLCredential *credntial = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];
        // 通过completionHandler告诉服务器信任证书
        completionHandler(NSURLSessionAuthChallengeUseCredential,credntial);
    }
    NSLog(@"protectionSpace = %@",challenge.protectionSpace);
}

AFNetWorking自签名

 NSString *urlStr = @"https://192.168.64.43:443/get/test";
    
    //获取证书信息
    NSString *path = [[NSBundle mainBundle] pathForResource:@"test" ofType:@"cer"];
    NSData *data = [NSData dataWithContentsOfFile:path];
    NSSet *set = [[NSSet alloc]initWithObjects:data, nil];
    
    AFSecurityPolicy *policy = [AFSecurityPolicy policyWithPinningMode:AFSSLPinningModeCertificate];
    //允许证书
    policy.allowInvalidCertificates = YES;
    //不需要验证域名
    policy.validatesDomainName = NO;
    //设置证书
    policy.pinnedCertificates = set;
    
    //请求网络
    AFHTTPSessionManager *mg = [AFHTTPSessionManager manager];
    //设置安全政策
    mg.securityPolicy = policy;
    
    //配置返回数据和发送数据的格式
    mg.responseSerializer = [AFHTTPResponseSerializer serializer];
    mg.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/json", @"text/javascript",@"text/html", nil,nil];
    mg.requestSerializer = [AFJSONRequestSerializer serializer];
    mg.requestSerializer.timeoutInterval = 10.0f;
    
    NSDictionary *dict = @{@"wang":@"123"};
    
    [mg POST:urlStr parameters:dict progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
//            id result = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableLeaves error:nil];
        NSString *str = [[NSString alloc]initWithData:responseObject encoding:NSUTF8StringEncoding];
        NSLog(@"success -->%@",str);
        
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        
        NSLog(@"error -->%@",error.description);
        
    }];

TestHttps

- (void)testHttps {
    
    NSString *urlString = @"https://192.168.64.43:8080/image/main.jpg";
    NSString *cerPath = [[NSBundle mainBundle] pathForResource:@"test" ofType:@"cer"];
    NSData * certData =[NSData dataWithContentsOfFile:cerPath];
    NSSet * certSet = [[NSSet alloc] initWithObjects:certData, nil];
    AFSecurityPolicy *securityPolicy = [AFSecurityPolicy policyWithPinningMode:AFSSLPinningModeCertificate];
    // 是否允许,NO-- 不允许无效的证书
    [securityPolicy setAllowInvalidCertificates:YES];
    securityPolicy.validatesDomainName = NO;
    // 设置证书
    [securityPolicy setPinnedCertificates:certSet];
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.securityPolicy = securityPolicy;
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];
    manager.requestSerializer.timeoutInterval = 10;
    // request
    [manager GET:urlString parameters:nil progress:^(NSProgress * progress){
    } success:^(NSURLSessionDataTask *task, id responseObject) {
        NSString *str = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
        NSLog(@"OK === %@",str);
    } failure:^(NSURLSessionDataTask *task, NSError *error) {
        
        NSLog(@"error ==%@",error.description);
    }];
}