Question

使用SwiftyBeaver记录器时出现此错误，该记录器尝试通过此代码将数据发送到云端：

func sendToServerAsync(str: String?, complete: (ok: Bool, status: Int) -> ()) {

        if let payload = str, let queue = self.queue {

            // create operation queue which uses current serial queue of destination
            let operationQueue = NSOperationQueue()
            operationQueue.underlyingQueue = queue

            let session = NSURLSession(configuration:
                NSURLSessionConfiguration.defaultSessionConfiguration(),
                delegate: nil, delegateQueue: operationQueue)

            // assemble request
            let request = NSMutableURLRequest(URL: serverURL)
            request.HTTPMethod = "POST"
            request.addValue("application/json", forHTTPHeaderField: "Content-Type")
            request.addValue("application/json", forHTTPHeaderField: "Accept")

            // basic auth header
            let credentials = "\(appID):\(appSecret)".dataUsingEncoding(NSUTF8StringEncoding)!
            let base64Credentials = credentials.base64EncodedStringWithOptions([])
            request.setValue("Basic \(base64Credentials)", forHTTPHeaderField: "Authorization")

            // POST parameters
            let params = ["payload": payload]
            do {
                request.HTTPBody = try NSJSONSerialization.dataWithJSONObject(params, options: [])
            } catch let error as NSError {
                toNSLog("Error! Could not create JSON for server payload. \(error)")
            }
            //toNSLog("sending params: \(params)")
            //toNSLog("\n\nbefore sendToServer on thread '\(threadName())'")

            sendingInProgress = true
            // send request async to server on destination queue
            let task = session.dataTaskWithRequest(request) {
                _, response, error in
                var ok = false
                var status = 0
                //toNSLog("callback of sendToServer on thread '\(self.threadName())'")

                if let error = error {
                    // an error did occur
                    self.toNSLog("Error! Could not send entries to server. \(error)")
                } else {
                    if let response = response as? NSHTTPURLResponse {
                        status = response.statusCode
                        if status == 200 {
                            // all went well, entries were uploaded to server
                            ok = true
                        } else {
                            // status code was not 200
                            var msg = "Error! Sending entries to server failed "
                            msg += "with status code \(status)"
                            self.toNSLog(msg)
                        }
                    }
                }
                return complete(ok: ok, status: status)
            }
            task.resume()
        }
    }

奇怪的是它适用于前两个或三个日志条目，然后由于上述错误而停止。我尝试重置模拟器上的内容和设置并重新启动我的模拟器（如Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost."中所述），但只是暂时修复它 - 在前2-3个日志条目之后，它再次开始失败。

我昨晚尝试使用SwiftBeaver的创建者调试了几个小时，但是我们无法让它工作。似乎没有多少人看到这个问题。

我尝试删除我的Wifi连接并重新连接，但这也没有用。

对此的任何指导都将非常感激。

仅供参考，我使用的是Swift 2和XCode 7.3。

Answer 1

这可能是由于iOS保持活动支持在iOS模拟器中严重错误造成的。参见：

Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost."

有关更多详细信息，但简短的回答是在执行模拟器测试时使用的服务器上禁用keep-alive，或者更好的是，添加一些在遇到特定错误时立即重试请求的逻辑。

错误域= NSURLErrorDomain代码= -1005＆＃34;网络连接丢失

1 个答案: