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POClient / Server multi threaded using TCP Listener and Streamreader / writer
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  1. POClient / Server multi threaded using TCP Listener and Streamreader / writer
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    copied!<p>I've been asked to write a Client / Server application in C#, and have been given half-completed code to get started.</p> <p>It uses the <code>ThreadPool</code>, and <code>TcpListener</code> with <code>StreamReader</code> and <code>StreamWriter</code> classes for data transfer.The client has a working directory, which is fixed. The server has one too, but can change.</p> <p>Basically, you type in an option on the client using a switch statement, and the server processes that option and sends it back to the client.</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net.Sockets; using System.IO; using System.Security.Cryptography; namespace Client { /// &lt;summary&gt; /// Remote File Service client /// &lt;/summary&gt; class Client { /// &lt;summary&gt; /// Static entry point to client code /// &lt;/summary&gt; /// &lt;param name="args"&gt;unused&lt;/param&gt; static void Main(string[] args) { string dir = @"c:\st12_13d1_files"; try { Directory.SetCurrentDirectory(dir); } catch (DirectoryNotFoundException e) { Console.WriteLine("The specified directory does not exist. {0}", e); } try { using (TcpClient client = new TcpClient("localhost", 50012)) using (NetworkStream stream = client.GetStream()) using (StreamReader reader = new StreamReader(stream)) using (StreamWriter writer = new StreamWriter(stream)) { writer.AutoFlush = true; string option; do { Console.WriteLine("-Menu-\n"); Console.WriteLine("1-Print out file names-\n"); Console.WriteLine("2-Current Working Directory-\n"); Console.WriteLine("3-Files Present on the Server-\n"); Console.WriteLine("4- List of Subdirectory Names-\n"); Console.WriteLine("5- Change Server Directory Location-\n"); Console.WriteLine("6-Copy the contents of a file specified-\n"); Console.WriteLine("7-Close-\n"); Console.WriteLine("Please enter your choice: "); option = Console.ReadLine(); switch (option) { case "1": case "one": Console.WriteLine("You have selected Print out file names: "); break; } using System; using System.Net; using System.Net.Sockets; using System.IO; using System.Text; using System.Threading; using System.Security.Cryptography; namespace Server { /// &lt;summary&gt; /// Remote File Service main functionality /// &lt;/summary&gt; public class ServerMainline { public ServerMainline() { /* * *** TO DO - your code goes here *** * record initial current working directory value in a global variable */ string serv = (@"..\.."); try { //Set the current directory. Directory.SetCurrentDirectory(serv); } catch (DirectoryNotFoundException e) { Console.WriteLine("The specified directory does not exist. {0}", e); } TcpListener server = null; try { ThreadPool.SetMaxThreads(50, 50); server = new TcpListener(IPAddress.Any, 50012); server.Start(); while (true) { Console.WriteLine("Waiting for a new Client..."); TcpClient client = server.AcceptTcpClient(); ThreadPool.QueueUserWorkItem(serviceClient, client); } } catch (Exception e) { Console.WriteLine("Server mainline: SocketException: {0}", e); } finally { server.Stop(); server.Server.Close(); } } /// &lt;summary&gt; /// method to run to handle each client on separate thread /// &lt;/summary&gt; void serviceClient(object clientObject) { Thread currentThread = Thread.CurrentThread; int threadID = currentThread.GetHashCode(); try { using (TcpClient client = (TcpClient)clientObject) using (NetworkStream stream = client.GetStream()) using (StreamReader reader = new StreamReader(stream)) using (StreamWriter writer = new StreamWriter(stream)) { writer.AutoFlush = true; Console.WriteLine("Connected with a client, threadID: {0}", threadID); string option = reader.ReadLine(); while (option != "7") switch (option) { case "1": case "one": string[] myfiles = Directory.GetFiles(@"c:\st12_13d1_files"); Console.WriteLine("File Names {0}",Directory.GetFiles (@"c:\st12_13d1_files")); foreach (string file in myfiles) { //Console.WriteLine(file); Console.WriteLine(Path.GetFileName(file)); writer.WriteLine(myfiles); } break; } </code></pre>
 

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