ardupilot/Tools/ArdupilotMegaPlanner/3DRRadio/Common.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Security.Cryptography.X509Certificates;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Xml; // config file
using System.Runtime.InteropServices; // dll imports
using System.Drawing.Drawing2D;
using log4net;
using System.Reflection;
using System.Windows.Forms;

namespace ArdupilotMega
{
    public class Common
    {
        private static readonly ILog log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        public static bool getFilefromNet(string url, string saveto)
        {
            try
            {
                // this is for mono to a ssl server
                //ServicePointManager.CertificatePolicy = new NoCheckCertificatePolicy(); 

                ServicePointManager.ServerCertificateValidationCallback =
    new System.Net.Security.RemoteCertificateValidationCallback((sender, certificate, chain, policyErrors) => { return true; });

                // Create a request using a URL that can receive a post. 
                WebRequest request = WebRequest.Create(url);
                request.Timeout = 10000;
                // Set the Method property of the request to POST.
                request.Method = "GET";
                // Get the response.
                WebResponse response = request.GetResponse();
                // Display the status.
                log.Info(((HttpWebResponse)response).StatusDescription);
                if (((HttpWebResponse)response).StatusCode != HttpStatusCode.OK)
                    return false;
                // Get the stream containing content returned by the server.
                Stream dataStream = response.GetResponseStream();

                long bytes = response.ContentLength;
                long contlen = bytes;

                byte[] buf1 = new byte[1024];

                FileStream fs = new FileStream(saveto + ".new", FileMode.Create);

                DateTime dt = DateTime.Now;

                while (dataStream.CanRead && bytes > 0)
                {
                    Application.DoEvents();
                    log.Debug(saveto + " " + bytes);
                    int len = dataStream.Read(buf1, 0, buf1.Length);
                    bytes -= len;
                    fs.Write(buf1, 0, len);
                }

                fs.Close();
                dataStream.Close();
                response.Close();

                File.Delete(saveto);
                File.Move(saveto + ".new", saveto);

                return true;
            }
            catch (Exception ex) { log.Info("getFilefromNet(): " + ex.ToString()); return false; }
        }
        
    }
}