GET

ViewController.swift

import Cocoa

class ViewController: NSViewController  {
    var sites:[SiteHost] = [SiteHost]()
    struct SiteHost:Decodable{
        var id:String=""
        var name:String=""
        var url:String=""
        var description:String=""
        var logo_path:String=""
    }
    func loadList(str:String="") {
        let urlString = "https://programmerdesign.com/go_through/site-host/reload?str="+str+"&access-token="+UserDefaults.standard.string(forKey: "token")!
        if let url = URL(string:urlString) {
            let task = URLSession.shared.dataTask(with: url, completionHandler:{ data, response, error in
                // Check the response
                let decoder = JSONDecoder()
                do{
                    let site_hosts=try decoder.decode([SiteHost].self,from:data!)
                   
                    self.sites = site_hosts
                    DispatchQueue.main.async{
                     //   self.siteView.reloadData()
                     //   self.siteView.beginUpdates()
                     //   self.siteView.endUpdates()
                    }
                    
                }catch{
                    print(error.localizedDescription);
                }
            })
            task.resume()
        }
    }
}

POST

ViewController.swift

import Cocoa

class ViewController: NSViewController  {
    var site:SiteHost = SiteHost()
    func save(id:String,siteDescription:String,siteName:String,siteUrl:String,imagePath:String) {
         let urlString = "https://programmerdesign.com/go_through/site-host/update?id="+id+"&access-token="+UserDefaults.standard.string(forKey: "token")!
        if let url = URL(string:urlString) {
            var request = URLRequest(url: url)
            request.httpMethod = "POST"
            request.setValue("application/json", forHTTPHeaderField: "Content-Type")
            request.setValue("Powered by Swift!", forHTTPHeaderField: "X-Powered-By")
            
            let json = [
                "name": siteName,
                "url": siteUrl,
                "logo_path": imagePath,
                "description": siteDescription,
                ]
            let jsonData = try! JSONSerialization.data(withJSONObject: json, options: [])
            let task = URLSession.shared.uploadTask(with: request ,from:jsonData, completionHandler:{ data, response, error in
                // Check the response
                let decoder = JSONDecoder()
                do{
                    let shost = try decoder.decode(SiteHost.self,from:data!)
                    self.site = shost
                    DispatchQueue.main.async{
                      //back to main
                    }
                }catch{
                    print(error.localizedDescription);
                }
            })
            task.resume()
        }
    }
}