how to pass User and Pwrd with Sockets?

  • Thread starter Thread starter Ron
  • Start date Start date
R

Ron

Greetings,

below is a sample app for connecting to a mainframe server
using Sockets for the purpose of using FTP service to
interact with it from a PC. I got as far as creating the
connection. But how do I pass a username and password?
How can I change directories?

---------------------------------------------
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net.Sockets;
using System.IO;

namespace TcpSocketClient
{
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Button btnConnectToServer;
private System.Windows.Forms.Button btnSendMessage;
private StreamReader clientStreamReader;
private StreamWriter clientStreamWriter;

private System.ComponentModel.Container components =
null;
public Form1()
{
InitializeComponent();
}

protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}

#region Windows Form Designer generated code

[STAThread]
static void Main()
{
Application.Run(new Form1());
}

private bool ConnectToServer()
{
//connect to server at given port
try
{
TcpClient tcpClient = new TcpClient("173.31.15.37",
21);
Console.WriteLine("Connected to Server");
//get a network stream from server
NetworkStream clientSockStream = tcpClient.GetStream();
clientStreamReader = new StreamReader(clientSockStream);
clientStreamWriter = new StreamWriter(clientSockStream);
}
catch(Exception e)
{
Console.WriteLine(e.StackTrace);
return false;
}
return true;
}

private void btnConnectToServer_Click(object sender,
System.EventArgs e)
{
//connect to server
if (!ConnectToServer())
Console.WriteLine("Unable to connect to server");
}

private void btnSendMessage_Click(object sender,
System.EventArgs e)
{
try
{
//send message to server
clientStreamWriter.WriteLine("Hello!");
clientStreamWriter.Flush();
Console.WriteLine("SERVER: "+clientStreamReader.ReadLine
());
}
catch(Exception se)
{
Console.WriteLine(se.StackTrace);
}
}
}
}

Any resources on using Sockets and FTP appreciated.

Thanks,
Ron
 
For these there are specific FTP commands to do each of those.
I'm pretty sure the CD dirname command is used to change directories and I
can't think of the the login commands at the moment. But try using the
following syntax in the connection string (e-mail address removed):password. I don't
know if it will work like that but it has been known to work in browsers.
 
below is a sample app for connecting to a mainframe server
using Sockets for the purpose of using FTP service to
interact with it from a PC. I got as far as creating the
connection. But how do I pass a username and password?
How can I change directories?
Click to expand...

You need to learn the protocol. Think of it as a new API. The docs
are here: <http://www.faqs.org/rfcs/rfc959.html>. In a nutshell, you
send text to execute commands and receive text indicating the results.
You have to do your own text parsing. It might be easier to find a
class that someone has written and use that instead.
 
Thanks all for your replies. I have taken a look at the
FTP docs. Very informative. I have a little more
understanding what I am looking for now. Hopefully,
someone has put out a sample of code for doing this.


Thanks again,
Ron

-----Original Message-----
Greetings,

below is a sample app for connecting to a mainframe server
using Sockets for the purpose of using FTP service to
interact with it from a PC. I got as far as creating the
connection. But how do I pass a username and password?
How can I change directories?

---------------------------------------------
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net.Sockets;
using System.IO;

namespace TcpSocketClient
{
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Button btnConnectToServer;
private System.Windows.Forms.Button btnSendMessage;
private StreamReader clientStreamReader;
private StreamWriter clientStreamWriter;

private System.ComponentModel.Container components =
null;
public Form1()
{
InitializeComponent();
}

protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}

#region Windows Form Designer generated code

[STAThread]
static void Main()
{
Application.Run(new Form1());
}

private bool ConnectToServer()
{
//connect to server at given port
try
{
TcpClient tcpClient = new TcpClient("173.31.15.37",
21);
Console.WriteLine("Connected to Server");
//get a network stream from server
NetworkStream clientSockStream = tcpClient.GetStream ();
clientStreamReader = new StreamReader (clientSockStream);
clientStreamWriter = new StreamWriter (clientSockStream);
}
catch(Exception e)
{
Console.WriteLine(e.StackTrace);
return false;
}
return true;
}

private void btnConnectToServer_Click(object sender,
System.EventArgs e)
{
//connect to server
if (!ConnectToServer())
Console.WriteLine("Unable to connect to server");
}

private void btnSendMessage_Click(object sender,
System.EventArgs e)
{
try
{
//send message to server
clientStreamWriter.WriteLine("Hello!");
clientStreamWriter.Flush();
Console.WriteLine
Click to expand...
("SERVER: "+clientStreamReader.ReadLine
 
Hi Ron,

Look around for a FTP client component, it should be far easier that
implement one yourself

Cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation



Ron said:
Thanks all for your replies. I have taken a look at the
FTP docs. Very informative. I have a little more
understanding what I am looking for now. Hopefully,
someone has put out a sample of code for doing this.


Thanks again,
Ron

-----Original Message-----
Greetings,

below is a sample app for connecting to a mainframe server
using Sockets for the purpose of using FTP service to
interact with it from a PC. I got as far as creating the
connection. But how do I pass a username and password?
How can I change directories?

---------------------------------------------
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net.Sockets;
using System.IO;

namespace TcpSocketClient
{
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Button btnConnectToServer;
private System.Windows.Forms.Button btnSendMessage;
private StreamReader clientStreamReader;
private StreamWriter clientStreamWriter;

private System.ComponentModel.Container components =
null;
public Form1()
{
InitializeComponent();
}

protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}

#region Windows Form Designer generated code

[STAThread]
static void Main()
{
Application.Run(new Form1());
}

private bool ConnectToServer()
{
//connect to server at given port
try
{
TcpClient tcpClient = new TcpClient("173.31.15.37",
21);
Console.WriteLine("Connected to Server");
//get a network stream from server
NetworkStream clientSockStream = tcpClient.GetStream ();
clientStreamReader = new StreamReader (clientSockStream);
clientStreamWriter = new StreamWriter (clientSockStream);
}
catch(Exception e)
{
Console.WriteLine(e.StackTrace);
return false;
}
return true;
}

private void btnConnectToServer_Click(object sender,
System.EventArgs e)
{
//connect to server
if (!ConnectToServer())
Console.WriteLine("Unable to connect to server");
}

private void btnSendMessage_Click(object sender,
System.EventArgs e)
{
try
{
//send message to server
clientStreamWriter.WriteLine("Hello!");
clientStreamWriter.Flush();
Console.WriteLine
Click to expand...
("SERVER: "+clientStreamReader.ReadLine
());
}
catch(Exception se)
{
Console.WriteLine(se.StackTrace);
}
}
}
}

Any resources on using Sockets and FTP appreciated.

Thanks,
Ron
.
Click to expand...
Click to expand...
 
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