MissionPlanner.Common.getFilefromNet C# (CSharp) Method

        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; });

                log.Info(url);
                // 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;

                if (File.Exists(saveto))
                {
                    DateTime lastfilewrite = new FileInfo(saveto).LastWriteTime;
                    DateTime lasthttpmod = ((HttpWebResponse)response).LastModified;

                    if (lasthttpmod < lastfilewrite)
                    {
                        if (((HttpWebResponse)response).ContentLength == new FileInfo(saveto).Length)
                        {
                            log.Info("got LastModified " + saveto + " " + ((HttpWebResponse)response).LastModified +
                                     " vs " + new FileInfo(saveto).LastWriteTime);
                            response.Close();
                            return true;
                        }
                    }
                }

                // 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];

                if (!Directory.Exists(Path.GetDirectoryName(saveto)))
                    Directory.CreateDirectory(Path.GetDirectoryName(saveto));

                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;
            }
        }

        bool getFirmware(uploader.Uploader.Code device)
        {
            // was https://raw.github.com/tridge/SiK/master/Firmware/dst/radio.hm_trp.hex
            // now http://www.samba.org/tridge/UAV/3DR/radio.hm_trp.hex

            if (device == uploader.Uploader.Code.DEVICE_ID_HM_TRP)
            {
                return(Common.getFilefromNet("http://www.samba.org/tridge/UAV/3DR/radio.hm_trp.hex", firmwarefile));
            }
            else if (device == uploader.Uploader.Code.DEVICE_ID_RFD900)
            {
                return(Common.getFilefromNet("http://rfdesign.com.au/firmware/radio.rfd900.hex", firmwarefile));
            }
            else if (device == uploader.Uploader.Code.DEVICE_ID_RFD900A)
            {
                int fixme;
                int fixme23;

                //  return Common.getFilefromNet("http://rfdesign.com.au/firmware/MPSiK%20V2.2%20radio~rfd900a.ihx", firmwarefile);

                return(Common.getFilefromNet("http://rfdesign.com.au/firmware/radio.rfd900a.hex", firmwarefile));
            }
            else
            {
                return(false);
            }
        }