Ftp using TcpClient in C#

Question

TcpClient tcp= new TcpClient();
tcp.Connect("192.168.10.1",21);
tcp.GetStream();

if(tcp.Connected.ToString()=="True")
{
    NetworkStream ns=tcp.GetStream();

    using(NetworkStream stream-tcp.GetStream())
    {
         byte[] username=System.Text.Encoding.ASCII.GetBytes(user+"\r\n")
         stream.Wrtie(username,0,user.Length);

         byte[] password=System.Text.Encoding.ASCII.GetBytes(pass+"\r\n")
         stream.Wrtie(password,0,pass.Length);
         MessageBox.Show(""+ns.Read(data,0,data.Length)+"");
    }
}

I am using above code to ftp a router using tcpclient, it returns an error stating "530 please login with USER and PASS".

Answer 1

If you going to use the TcpClient class (like you are doing), then you will have to implement the FTP specification (https://www.ietf.org/rfc/rfc959.txt).

However, I think it would be better to find an FTP client library to use instead.