Example #1
0
        //static string GetFileNameFromUrl(string url)
        //{
        //    Uri uri;
        //    if (!Uri.TryCreate(url, UriKind.Absolute, out uri))
        //        uri = new Uri(url);
        //    return System.IO.Path.GetFileName(uri.LocalPath);
        //}
        protected async override Task <object> ExecuteAsync(AsyncCodeActivityContext context)
        {
            var username       = Username.Get(context);
            var password       = Password.Get(context);
            var url            = URL.Get(context);
            var filepath       = LocalPath.Get(context);
            var overwrite      = Overwrite.Get(context);
            var ignoresecurity = IgnoreSecurity.Get(context);

            filepath = Environment.ExpandEnvironmentVariables(filepath);
            // if(string.IsNullOrEmpty(filename)) filename = "temp."
            if (System.IO.File.Exists(filepath) && !overwrite)
            {
                return(42);
            }
            using (var client = new System.Net.WebClient())
            {
                var Expect100Continue = System.Net.ServicePointManager.Expect100Continue;
                var SecurityProtocol  = System.Net.ServicePointManager.SecurityProtocol;
                if (ignoresecurity)
                {
                    System.Net.ServicePointManager.Expect100Continue = true;
                    System.Net.ServicePointManager.SecurityProtocol  = System.Net.SecurityProtocolType.Tls | System.Net.SecurityProtocolType.Tls11 | System.Net.SecurityProtocolType.Tls12 | System.Net.SecurityProtocolType.Ssl3;
                }
                if (!string.IsNullOrEmpty(username) || !string.IsNullOrEmpty(password))
                {
                    client.Credentials = new System.Net.NetworkCredential(username, password);
                }
                var dir = System.IO.Path.GetDirectoryName(filepath);
                if (!System.IO.Directory.Exists(dir))
                {
                    System.IO.Directory.CreateDirectory(dir);
                }
                await client.DownloadFileTaskAsync(new Uri(url), filepath);

                if (ignoresecurity)
                {
                    System.Net.ServicePointManager.Expect100Continue = Expect100Continue;
                    System.Net.ServicePointManager.SecurityProtocol  = SecurityProtocol;
                }
            }
            return(42);
        }