timed out trying to read data from the socket stream

Hi,
i want upload files whit ftp to an other server but when i use these codes ,
its created file in host but the size of file is 0 bytes and return error

   public async Task<IActionResult> Create( IFormFile file)
        { 
   FtpClient client = new FtpClient("144.76.30.231");
   client.Credentials = new NetworkCredential("yavarani", "*********");
   client.Connect();
   using (var stream = new StreamReader(file.OpenReadStream()))
                    {
                        client.UploadAsync(stream.BaseStream, "/yavarani/yavaraniha.ir/wwwroot/Files/Videos/" + aVF.FileNameOrLink).Wait();
                    }
}

Error : 
timed out trying to read data from the socket stream