C# And .dll’s

14 02 2008

I’ve been working on Fizzure A LOT recently. I made a FizzSrvLight that is not a distributed system like the regular one, which therefore allowed me to write one effectively in about 3 hours. On the way I decided to make a few of my own methods and then realized, hey these can be used in other projects too!

So I made a class library (.dll – Dynamically Linked Library ) with a few methods that have to do with TCP Data transmition. The most important of which is the Send method that I made. Now this is really only useful for the client. Anyway, heres the snippet:


public static void Send(TcpClient Client, String Command)
{
Console.WriteLine("Opening Server Stream");
NetworkStream n = Client.GetStream();
String send = Command;
String receive = null;
byte[] msg = System.Text.Encoding.ASCII.GetBytes(send);
n.Write(msg, 0, msg.Length);
Console.WriteLine("SENT: {0}", send);
}

this method is meant for console programs, but if you are using a GUI all you really need to do is delete the Console.WriteLines()’s in there and replace it with wherever you want the output.

Hope this is helpful to everyone!





C# TcpListener Example

13 02 2008

Ok, this is just a quick snippet of code I wrote to get a working server up. Obviously theres more commands I could put in there in plenty of different ways, but I really just wanted to keep things simple for now. This took me about 2 hours.

This snippet is the main body of code that controls everything. If you go through it and read you’ll see that I made a struct to hold the information on files named File, in the namespace Structure. So you would access it by saying in this [MainNamespace].Structure.File; or you can just use Structure.File. I’ll paste the code for the struct at the end.

I didn’t leave too many comments because I used a lot of Writelines to tell me what it was doing, and for debugging purposes. Those kind of tell you what things do what.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;

namespace FizzSrvLight
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine(“FizzSrvLight :: Non-Distributed Fizzure Serving Capabilities”);
System.Threading.Thread.Sleep(1000);
Console.Write(“Loading…”);
Console.WriteLine(“!”);

Console.WriteLine(“Initiating Server Variables…”);
System.Net.IPAddress localaddr = System.Net.IPAddress.Parse(“127.0.0.1″);

Console.WriteLine(“Constructing Server Objects…”);
System.Net.Sockets.TcpListener MainServer = new System.Net.Sockets.TcpListener(localaddr, 9000);

Console.WriteLine(“Starting Server…”);
MainServer.Start();

Byte[] bytes = new Byte[1024];
String data = null;
String send = null;

while (true)
{
Console.WriteLine(“Waiting for connection…”);

// Accept Requests
System.Net.Sockets.TcpClient client = MainServer.AcceptTcpClient();
Console.WriteLine(“Client Connected!”);

// Clear Buffers
data = null;
send = null;

// Get Stream Object for reading and writing
System.Net.Sockets.NetworkStream stream = client.GetStream();

int i;

// Initialize File Holder
System.Collections.ArrayList CurrentFiles = new System.Collections.ArrayList();

// Loop to recieve all data sent from client
while ((i = stream.Read(bytes, 0, bytes.Length)) != 0)
{
// Clear buffers again
data = null;
send = null;
string message = “OK”;
// Get data as string
data = System.Text.Encoding.ASCII.GetString(bytes, 0, i);
Console.WriteLine(“FIZZ_RCV: {0}”, data);

String[] command = data.Split(‘ ‘);

// Insert Possible Commands Here
if (command[0] == “FIZZ_ADDFILE”)
{
FizzSrvLight.Structure.File file = new FizzSrvLight.Structure.File(command[1], command[2], command[3], command[4], command[5], command[6]);
CurrentFiles.Add(file);
}
else if (command[0] == “FIZZ_RMVFILE”)
{
FizzSrvLight.Structure.File file = new FizzSrvLight.Structure.File(command[1], command[2], command[3], command[4], command[5], command[6]);
CurrentFiles.Remove(file);
}
else if (command[0] == “FIZZ_AUTH”)
{
string username = command[1];
string password = command[2];
}
else
{
Console.WriteLine(“FIZZ_INVALID_INPUT”);
Console.WriteLine(“Error Handled”);
message = “ERROR”;
}

send = message;

byte[] msg = System.Text.Encoding.ASCII.GetBytes(send);

// Send back an OK response;
stream.Write(msg, 0, msg.Length);
Console.WriteLine(“FIZZ_SND: ” + message);
}
System.Threading.Thread.Sleep(1000);
}
}
}
}

Now, time for the struct.

namespace FizzSrvLight
{
namespace Structure
{
public struct File
{
public string FileName;
public string FilePath;
public string FileType;
public string SharedBy;
public string IPAddress;
public string Blacklist;

public File(string name, string path, string type, string user, string ipaddr, string blacklisted)
{
FileName = name;
FilePath = path;
FileType = type;
SharedBy = user;
IPAddress = ipaddr;
Blacklist = blacklisted;
}

}
}
}

Well, there you have it. A very simple TcpListener Serve. Obviously theres better ways to do it but this is pretty simple, straight forward, and just all around easy. Please leave comments if you find bugs in it or see errors or even if you just don’t understand what some of it does.





You Know You’re A Geek When…

10 02 2008

If I could find my camera, I would have some funny pictures to go along with this. but I don’t.

You know you’re a geek when:

  • You hang fuzzy dice from computer equipment.
  • You change the entire theme of all of your computers to the current holiday.
  • The number of computers you own is greater than the number of relatives you have.
  • You have informally taken over a room in your house just for you and your computers. (this only applies to people who still live with parents. Speaking of which…)
  • You’ve graduated and still live with your parents.
  • You rearrange your computers daily to try and make them look just that much cooler.
  • You’ve reformatted a Windows machine so many times, you know the serial number by heart.
  • Your computer room more than triples your electricity bill.
  • You have more Technology/Programming books than all of the other books you’ve ever read in your entire life.
  • You have an entire room full of spare computer parts.

Well, I could go on probably but i think I’ll stop here. 95% of these apply to me. I guess I’m a geek. Who else is?





My Room Is A Disaster

7 02 2008

This is just a current update of whats going on. First off, I apologize for being gone for a while. I was in the hospital. Don’t ask, I don’t want to talk about it. Second. I am in the middle of reconstructing everything! Everything in the room is a mess. Wires all over the floor, running over everything, walking through there is like walking through a dense jungle. Tree trunks and big plants to avoid everywhere. Only the tree trunks are chairs, the big plants are lamps, and theres vines of wires all over the room. It’s ridiculed. But anyways. Here’s some pictures. I deleted all my other posts with pictures because I realized the pictures were too big and stretching the page, and I was too lazy to go back and change the sizes. So I just deleted them haha. I’ll be posting thumbs from now on that will be links to the full size picture. If the pictures aren’t working, just wait a few hours or a day or whatever and come back. That means my comp is off, or not at my house. I transport it a lot. Like now. I’m writing this from my friends house, but I’m still on my own computer….

Yes…Pics….


Oh, and this is -library- of Technical/Programming Information haha.

Yes, that is 2 shelves high…..

As you can see, everything is a mess and its ridiculous. I’m working on it though! I’ll update when its a little more orderly.