如何检查互联网连接不良的Alamofire故障？

Question

我如何检查Alamofire请求是否由于互联网连接失败而失败？我收到一个错误，但是我怎么知道它因此失败

  

Error Domain = NSURLErrorDomain代码= -1005“网络连接丢失。” UserInfo = {_ kCFStreamErrorCodeKey = -4，NSUnderlyingError = 0x6000007fe6a0 {Error Domain = kCFErrorDomainCFNetwork Code = -1005“（null）” UserInfo = {NSErrorPeerAddressKey = {length = 28，容量= 28，字节= 0x1c1e1f96000000000000000000000000 ... 0000000100000000}，_kCFErrorCode -4，_kCFStreamErrorDomainKey = 4}}，_ NSURLErrorFailingURLSessionTaskErrorKey = LocalUploadTask。<1>，_ NSURLErrorRelatedURLSessionTaskErrorKey =（       “ LocalUploadTask。<1>”   ）

Answer 1

您可以从失败案例中获取错误消息，

Alamofire.request("YourURL", method: .post, parameters: parameters)
    .responseJSON { response in
    if case .failure(let error) = response.result {
        print(error.localizedDescription)//The network connection was lost.
    } else if case .success = response.result {
        print(response.result.value)
    }
}