技術標籤：swift

程式碼如下

import Foundation


class SpeedTestig{
    
    func NetSpeedTesting(){
        
        let url = URL(string: "https://images.apple.com/v/imac-with-retina/a/images/overview/5k_image.jpg")   // 圖片地址為國內
                
        let request = URLRequest(url:url!)
        
        let
 
 session = URLSession.shared
        
        let startTime = Date()
        
        let task = session.dataTask(with: request){ (data, resp, error) in
            
            guard error == nil && data != nil else{
                print("error or nil")
                return
            }
 

            
            guard resp != nil else{
                print("rsponse is  nil")
                return
            }
            
            let length = Float((resp?.expectedContentLength)!) / 1048576.0 * 8    // 1024 * 1024 = 1048576  * 8 為單位轉為bit 單位Mbps
            print(length)
            
            let
 
 elapsed = Float(Date().timeIntervalSince(startTime))
            print(elapsed)
            print(length/elapsed)

        }
        
        task.resume()
    }
}

測試三次，結果如下，和測速網結果基本相符

轉自https://stackoverflow.com/questions/38635804/how-to-check-the-network-speed-using-swift
稍作改動
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