Question

我已配置输入流以将图像传输到http服务器，但我遇到错误：Assertion failed: (CFReadStreamGetStatus(_stream.get()) == kCFStreamStatusNotOpen), function bodyStartProvidingData_block_invoke, file /BuildRoot/Library/Caches/com.apple.xbs/Sources/CFNetwork/CFNetwork-811.4.18/HTTP/Core/IO/HTTPTransaction.cpp, line 2122.并且不允许访问路径。

我该如何解决这个问题？

我已完成以下配置，如果您按照以下步骤操作，则可以收到错误消息：

1.将下面的代码复制并粘贴到您的项目中，安装Alamofire
2.拖放名为shot.png的图像（您可以截取屏幕截图并将其重命名为＆＃39; shot.png＆＃39;）到您的项目中。
3.运行Xcode，并在启动后触摸屏幕，并在控制台中收到错误消息！

import UIKit
import Alamofire

class ViewController: UIViewController {

var customInputStream:InputStream?

let sourceFileName = "shot.png"
let destinationUrlString = "http://httpbin.org/stream/:11"


///buffer size
let bufferSize = 1048576 //1024 * 1024

let path = Bundle.main.path(forResource: "shot.png", ofType: nil)!

//binary data of the file
var fileData = NSData()

//size of the data
var dataLength = 0
var fileSize:Int64 = 0

///inputstream counter
var readedBytes = 0
var sendedByteIndex = 0


override func viewDidLoad() {
    super.viewDidLoad()

    let image = UIImage(named: path)!
    fileData = UIImagePNGRepresentation(image)! as NSData
    dataLength = fileData.length
}

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {

    setUpInStreamForFile(path: path)

    let url = URL(string: destinationUrlString)

    let request = URLRequest(url: url!, cachePolicy: URLRequest.CachePolicy.reloadIgnoringCacheData, timeoutInterval: 30)

    Alamofire.upload(customInputStream!, with: request).response { (response) in
        print("response:\(response)")

    }
}
}


 extension ViewController:StreamDelegate{

// MARK: - InputStream
func setUpInStreamForFile(path:String) -> () {
    customInputStream = InputStream(fileAtPath: path)
    customInputStream?.delegate = self
    customInputStream?.schedule(in: RunLoop.current, forMode: RunLoopMode.defaultRunLoopMode)
    customInputStream?.open()
}

func stream(_ aStream: Stream, handle eventCode: Stream.Event) {
    print("eventCode:\(eventCode)")

    if aStream is InputStream {
        switch eventCode {
        // has data to read
        case Stream.Event.openCompleted, Stream.Event.hasBytesAvailable:

            readedBytes += sendedByteIndex

            var length = (dataLength - readedBytes) >= bufferSize ? bufferSize : (dataLength - readedBytes)
            var buffer = [UInt8](repeatElement(0, count: length))
            fileData.getBytes(&buffer, range: NSRange(location: readedBytes, length: bufferSize))
            length = (aStream as! InputStream).read(&buffer, maxLength: bufferSize)

            sendedByteIndex = length

        //read to the end of the stream
        case Stream.Event.endEncountered:
            aStream.close()
            aStream.remove(from: RunLoop.current, forMode: RunLoopMode.defaultRunLoopMode)
            //aStream = nil

        case Stream.Event.errorOccurred:
            print("error occurs!")

        default:
            break
        }
    }
}  
}

使用swift3从捆绑流上传图像会出错

0 个答案: