AssignmentACSC_424_midterm_fall_2012.pdf1 ACSC42.docx

Assignment/ACSC_424_midterm_fall_2012.pdf
1
ACSC424 – Network Application Programming – Midterm
exercise
Create a chat program that will be based on client server archite
cture.
The server will be responsible for connecting clients like the fol
lowing diagram:
-
Each client will be connected on the server after a short authenti
cation protocol as follows:
o
The server will be continuously listening to port 9000 for incom
ing connections
o
When a client is connected the server will have to accept the co

nnection using
the following protocol:
1. Server: OK
2. Client: USER: <user name>
3. Server: USER OK or else disconnect client
a.
it depends on the user name if it is already in the users list of th
e server
b. if the user is already connected perhaps from another
computer it
should be disconnected
4. Client: DATA
5. Server: OK DATA
a. When this procedure is finished the client will get
connected to port
9001 which is going to be used for data communications
b.
When a client is connected the server will send a message to all
other
connected clients to port 9000 that e.g Client A is connected
- The server will reject every user that is trying to
register using an illegal user name
(see step3)
- Server must be able to connect up to five clients

-
Clients will send data (messages) to another client or to all conn
ected clients and server will
forward it appropriately.
_ _X
Server
Client A
Client C
Client B
2
Students will have to create two programs
a) The server, will have the following interface:

b) The client, will have the following interface:
Bonus part:
Add a file exchange function between the clients.
All the above will be returned online
(Visual Studio C# , file and documents according to the assignm
ent guidelines)
IP address of server
Text to be send to remote point
Send button, when pressed data from
send text box must be transmitted to
the server
Data coming from other clients

Send data
List of connected clients IP address of
remote point
192.168.1.10: connected (Client 1)
192.168.1.30: connected (Client 3)
192.168.1.10: disconnected (Client 5)
Connect
192.168.1.102: hello all (client 3: all)
192.168.1.30: this is user 5 (client 5)
User Name Client 1
Data coming from clients. Any data
coming from clients will be displayed
here and then will be forwarded to
either another client or all of them
o Client 1
o Client 2
o Client 3
o Client 4
o Client 5
Select message recipient, either one of
the clients or all of them
o Client 1
o Client 2
o Client 3
o Client 4
o Client 5

All
Send data
Select a client or all of them and send
a message from the server
Assignment/Help Assignment/ACSC_424_ass4_fall_2012.pdf
ACSC424 – Network Application Programming – Lab4 TCP/IP
programming
Efthyvoulos Kyriacou
LAB EXERCISE 4
Create a chat program using TCP/IP sockets. The program will
be for two nodes with the
following GUI.
Program GUI

The two users must be able to exchange messages with each
other.
Create the application using your existing knowledge on TCP/IP
programming. The
design thinks like number of sockets etc, will be decided by the
student.
All the above will be returned within one week
(Visual Studio C# , file and documents according to the
assignment guidelines)
IP address of remote point
Text to be send to remote point
Send button, when pressed data from
send text box must be transmitted to
the remote point
Data coming from other clients
_ _X
Send data
Connect

Assignment/Help
Assignment/assignment_4_solution_tcp_ip_communication_pro
gram/tcp_ip_client/Backup/tcp_ip_client/Form1.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.IO;
using System.Threading;
namespace tcp_ip_client
{
public partial class tcp_client_form : Form

{
public tcp_client_form()
{
InitializeComponent();
}
private void btnbrowse_Click(object sender, EventArgs e)
{
openFileDialog.ShowDialog();
tbFilename.Text = openFileDialog.FileName;
}
private void btnsend_Click(object sender, EventArgs e)
{
//read file using a stream
Stream filestream = File.OpenRead(tbFilename.Text);
// have to allocate memory for the file
byte[] filebuffer = new byte[filestream.Length];

//read file into the filestream
filestream.Read(filebuffer, 0, (int)filestream.Length);
// have to open a TCP/IP socket in order to send the file
to
// the server
TcpClient clientsocket = new TcpClient(tbserver.Text,
8000);
//use a network stream in order to send data through
TCP/IP socket
NetworkStream networkstream =
clientsocket.GetStream();
networkstream.Write(filebuffer, 0,
filebuffer.GetLength(0));
networkstream.Close();
clientsocket.Close();
}

private void tbFilename_TextChanged(object sender,
EventArgs e)
{
}
}
}
Assignment/Help
gram/tcp_ip_client/Backup/tcp_ip_client/Form1.Designer.cs
{
partial class tcp_client_form
{
/// <summary>
/// Required designer variable.
/// </summary>

private System.ComponentModel.IContainer components =
null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources
should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.tbFilename = new
System.Windows.Forms.TextBox();
this.tbserver = new System.Windows.Forms.TextBox();
this.btnbrowse = new System.Windows.Forms.Button();
this.btnsend = new System.Windows.Forms.Button();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.openFileDialog = new
System.Windows.Forms.OpenFileDialog();
this.SuspendLayout();
//
// tbFilename
//

this.tbFilename.Location = new
System.Drawing.Point(111, 12);
this.tbFilename.Name = "tbFilename";
this.tbFilename.Size = new System.Drawing.Size(230,
20);
this.tbFilename.TabIndex = 0;
this.tbFilename.TextChanged += new
System.EventHandler(this.tbFilename_TextChanged);
//
// tbserver
//
this.tbserver.Location = new
this.tbserver.Name = "tbserver";
this.tbserver.Size = new System.Drawing.Size(230, 20);
this.tbserver.TabIndex = 1;
//
// btnbrowse
//
this.btnbrowse.Location = new

this.btnbrowse.Name = "btnbrowse";
this.btnbrowse.Size = new System.Drawing.Size(77,
20);
this.btnbrowse.TabIndex = 2;
this.btnbrowse.Text = "Browse";
this.btnbrowse.UseVisualStyleBackColor = true;
this.btnbrowse.Click += new
System.EventHandler(this.btnbrowse_Click);
//
// btnsend
//
this.btnsend.Location = new System.Drawing.Point(358,
45);
this.btnsend.Name = "btnsend";
this.btnsend.Size = new System.Drawing.Size(77, 20);
this.btnsend.TabIndex = 3;
this.btnsend.Text = "Send File";
this.btnsend.UseVisualStyleBackColor = true;
this.btnsend.Click += new
System.EventHandler(this.btnsend_Click);

//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(12,
12);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(26, 13);
this.label1.TabIndex = 4;
this.label1.Text = "File:";
//
// label2
//
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(12,
49);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(94, 13);
this.label2.TabIndex = 5;

this.label2.Text = "Server IP address:";
//
// openFileDialog
//
this.openFileDialog.FileName = "openFileDialog1";
//
// tcp_client_form
//
this.AutoScaleDimensions = new
System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode =
System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(451, 77);
this.Controls.Add(this.label2);
this.Controls.Add(this.label1);
this.Controls.Add(this.btnsend);
this.Controls.Add(this.btnbrowse);
this.Controls.Add(this.tbserver);
this.Controls.Add(this.tbFilename);

this.Name = "tcp_client_form";
this.Text = "";
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.TextBox tbFilename;
private System.Windows.Forms.TextBox tbserver;
private System.Windows.Forms.Button btnbrowse;
private System.Windows.Forms.Button btnsend;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.OpenFileDialog
openFileDialog;
}

}
Assignment/Help
gram/tcp_ip_client/Backup/tcp_ip_client/Form1.resx

text/microsoft-resx
2.0
System.Resources.ResXResourceReader,
System.Windows.Forms, Version=2.0.0.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089
System.Resources.ResXResourceWriter,

17, 17
Assignment/Help
gram/tcp_ip_client/Backup/tcp_ip_client/Program.cs
using System;
using System.Collections.Generic;
using System.Windows.Forms;
{
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{

Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new tcp_client_form());
}
}
}
Assignment/Help
gram/tcp_ip_client/Backup/tcp_ip_client/Properties/AssemblyIn
fo.cs
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
// General Information about an assembly is controlled through
the following
// set of attributes. Change these attribute values to modify the
information
// associated with an assembly.
[assembly: AssemblyTitle("tcp_ip_client")]
[assembly: AssemblyDescription("")]

[assembly: AssemblyConfiguration("")]
[assembly: AssemblyCompany("")]
[assembly: AssemblyProduct("tcp_ip_client")]
[assembly: AssemblyCopyright("Copyright © 2008")]
[assembly: AssemblyTrademark("")]
[assembly: AssemblyCulture("")]
// Setting ComVisible to false makes the types in this assembly
not visible
// to COM components. If you need to access a type in this
assembly from
// COM, set the ComVisible attribute to true on that type.
[assembly: ComVisible(false)]
// The following GUID is for the ID of the typelib if this project
is exposed to COM
[assembly: Guid("ec2dcf14-811a-4fb7-86d6-76dbcf1f6477")]
// Version information for an assembly consists of the following
four values:

//
// Major Version
// Minor Version
// Build Number
// Revision
//
[assembly: AssemblyVersion("1.0.0.0")]
[assembly: AssemblyFileVersion("1.0.0.0")]
Assignment/Help
gram/tcp_ip_client/Backup/tcp_ip_client/Properties/Resources.
Designer.cs
//-------------------------------------------------------------------------
-----
// <auto-generated>
// This code was generated by a tool.
// Runtime Version:2.0.50727.832
//
// Changes to this file may cause incorrect behavior and will
be lost if

// the code is regenerated.
// </auto-generated>
//-------------------------------------------------------------------------
-----
namespace tcp_ip_client.Properties
{
/// <summary>
/// A strongly-typed resource class, for looking up localized
strings, etc.
/// </summary>
// This class was auto-generated by the
StronglyTypedResourceBuilder
// class via a tool like ResGen or Visual Studio.
// To add or remove a member, edit your .ResX file then
rerun ResGen
// with the /str option, or rebuild your VS project.

[global::System.CodeDom.Compiler.GeneratedCodeAttribute("S
ystem.Resources.Tools.StronglyTypedResourceBuilder",
"2.0.0.0")]
[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
[global::System.Runtime.CompilerServices.CompilerGenerated
Attribute()]
internal class Resources
{
private static global::System.Resources.ResourceManager
resourceMan;
private static global::System.Globalization.CultureInfo
resourceCulture;
[global::System.Diagnostics.CodeAnalysis.SuppressMessageAtt
ribute("Microsoft.Performance",
"CA1811:AvoidUncalledPrivateCode")]
internal Resources()
{

}
/// <summary>
/// Returns the cached ResourceManager instance used by
this class.
/// </summary>
[global::System.ComponentModel.EditorBrowsableAttribute(glo
bal::System.ComponentModel.EditorBrowsableState.Advanced)
]
internal static global::System.Resources.ResourceManager
ResourceManager
{
get
{
if ((resourceMan == null))
{
global::System.Resources.ResourceManager temp
= new
global::System.Resources.ResourceManager("tcp_ip_client.Prop
erties.Resources", typeof(Resources).Assembly);
resourceMan = temp;

}
return resourceMan;
}
}
/// <summary>
/// Overrides the current thread's CurrentUICulture
property for all
/// resource lookups using this strongly typed resource
class.
/// </summary>
[global::System.ComponentModel.EditorBrowsableAttribute(glo
bal::System.ComponentModel.EditorBrowsableState.Advanced)
]
internal static global::System.Globalization.CultureInfo
Culture
{
get
{
return resourceCulture;

}
set
{
resourceCulture = value;
}
}
}
}
Assignment/Help
gram/tcp_ip_client/Backup/tcp_ip_client/Properties/Resources.r
esx

System.Resources.ResXResourceReader,
System.Resources.ResXResourceWriter,
Assignment/Help
gram/tcp_ip_client/Backup/tcp_ip_client/Properties/Settings.De
signer.cs
//-------------------------------------------------------------------------
-----
// <auto-generated>
// This code was generated by a tool.
// Runtime Version:2.0.50727.832
//
// Changes to this file may cause incorrect behavior and will
be lost if
// the code is regenerated.
// </auto-generated>
//-------------------------------------------------------------------------

-----
namespace tcp_ip_client.Properties
{
[global::System.Runtime.CompilerServices.CompilerGenerated
Attribute()]
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("
Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingle
FileGenerator", "8.0.0.0")]
internal sealed partial class Settings :
global::System.Configuration.ApplicationSettingsBase
{
private static Settings defaultInstance =
((Settings)(global::System.Configuration.ApplicationSettingsBa
se.Synchronized(new Settings())));
public static Settings Default

{
get
{
return defaultInstance;
}
}
}
}
Assignment/Help
gram/tcp_ip_client/Backup/tcp_ip_client/Properties/Settings.set
tings
Assignment/Help
gram/tcp_ip_client/Backup/tcp_ip_client/tcp_ip_client.csproj
<Project DefaultTargets="Build"
xmlns="http://schemas.microsoft.com/developer/msbuild/2003"
>
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == ''
">Debug</Configuration>

<Platform Condition=" '$(Platform)' == ''
">AnyCPU</Platform>
<ProductVersion>8.0.50727</ProductVersion>
<SchemaVersion>2.0</SchemaVersion>
<ProjectGuid>{8C1EE43D-8DFF-4897-B39E-
F8E9E12B2AFD}</ProjectGuid>
<OutputType>WinExe</OutputType>
<AppDesignerFolder>Properties</AppDesignerFolder>
<RootNamespace>tcp_ip_client</RootNamespace>
<AssemblyName>tcp_ip_client</AssemblyName>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' ==
'Debug|AnyCPU' ">
<DebugSymbols>true</DebugSymbols>
<DebugType>full</DebugType>
<Optimize>false</Optimize>
<OutputPath>binDebug</OutputPath>
<DefineConstants>DEBUG;TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>

</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' ==
'Release|AnyCPU' ">
<DebugType>pdbonly</DebugType>
<Optimize>true</Optimize>
<OutputPath>binRelease</OutputPath>
<DefineConstants>TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
</PropertyGroup>
<ItemGroup>
<Reference Include="System" />
<Reference Include="System.Data" />
<Reference Include="System.Deployment" />
<Reference Include="System.Drawing" />
<Reference Include="System.Windows.Forms" />
<Reference Include="System.Xml" />
</ItemGroup>

<ItemGroup>
<Compile Include="Form1.cs">
<SubType>Form</SubType>
</Compile>
<Compile Include="Form1.Designer.cs">
<DependentUpon>Form1.cs</DependentUpon>
</Compile>
<Compile Include="Program.cs" />
<Compile Include="PropertiesAssemblyInfo.cs" />
<EmbeddedResource Include="Form1.resx">
<SubType>Designer</SubType>
<DependentUpon>Form1.cs</DependentUpon>
</EmbeddedResource>
<EmbeddedResource Include="PropertiesResources.resx">
<Generator>ResXFileCodeGenerator</Generator>
<LastGenOutput>Resources.Designer.cs</LastGenOutput>
<SubType>Designer</SubType>
</EmbeddedResource>

<Compile Include="PropertiesResources.Designer.cs">
<AutoGen>True</AutoGen>
<DependentUpon>Resources.resx</DependentUpon>
</Compile>
<None Include="PropertiesSettings.settings">
<Generator>SettingsSingleFileGenerator</Generator>
<LastGenOutput>Settings.Designer.cs</LastGenOutput>
</None>
<Compile Include="PropertiesSettings.Designer.cs">
<AutoGen>True</AutoGen>
<DependentUpon>Settings.settings</DependentUpon>
<DesignTimeSharedInput>True</DesignTimeSharedInput>
</Compile>
</ItemGroup>
<Import
Project="$(MSBuildBinPath)Microsoft.CSharp.targets" />
<!-- To modify your build process, add your task inside one of
the targets below and uncomment it.
Other similar extension points exist, see
Microsoft.Common.targets.

<Target Name="BeforeBuild">
</Target>
<Target Name="AfterBuild">
</Target>
-->
</Project>
Assignment/Help
gram/tcp_ip_client/Backup/tcp_ip_client.sln
Microsoft Visual Studio
Solution
File, Format Version 9.00
# Visual Studio 2005
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") =
"tcp_ip_client", "tcp_ip_clienttcp_ip_client.csproj",
"{8C1EE43D-8DFF-4897-B39E-F8E9E12B2AFD}"

EndProject
Global
GlobalSection(

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