first commit

Author: MrSharpp

hello.jpg

@@ -0,0 +1,54 @@
+using System;
+using System.Net.Sockets;
+using System.Text;
+using System.IO;
+
+class Client{
+    static void Main(String[] args){
+        Connect("127.0.0.1", "@[email protected]@3900", 13000);
+    }
+
+    static void Connect(String server, String message, Int32 port){
+        try{
+            TcpClient client = new TcpClient(server, port);
+
+            Byte[] data = System.Text.Encoding.ASCII.GetBytes(message);
+
+            NetworkStream stream = client.GetStream();
+
+            stream.Write(data, 0, data.Length);
+
+            Console.WriteLine("Sent: {0}", message);
+
+            data = new Byte[256];
+
+            String responseData = String.Empty;
+
+            Int32 bytes = stream.Read(data, 0, data.Length);
+            responseData = System.Text.Encoding.ASCII.GetString(data, 0, bytes);
+
+            if(responseData.StartsWith("@ACCEPTED@")){
+                Console.WriteLine("Handshaked!");
+                byte[] fileStream = File.ReadAllBytes("./img19.jpg");
+                stream.Write(fileStream, 0, fileStream.Length);
+
+                byte[] endFile = System.Text.Encoding.ASCII.GetBytes("@SENT@");
+                stream.Write(endFile, 0, endFile.Length);
+                Console.WriteLine("File Sent!");
+
+            }else {
+                Console.WriteLine("Handshake Failed!");
+            }
+
+            stream.Close();
+            client.Close();
+        }catch (ArgumentNullException e){
+            Console.WriteLine("ArgumentNullException: {0}", e);
+        }catch (SocketException e){
+            Console.WriteLine("SocketException: {0}", e);
+        }
+
+        Console.WriteLine("\n Press Enter to continue...");
+        Console.Read();
+    }
+}

img19.jpg

@@ -0,0 +1,99 @@
+using System;
+using System.IO;
+using System.Net;
+using System.Net.Sockets;
+using System.Text;
+
+class MyTcpListener
+{
+  public static void Main()
+  {
+    TcpListener server=null;
+    try
+    {
+      // Set the TcpListener on port 13000.
+      Int32 port = 13000;
+      IPAddress localAddr = IPAddress.Parse("0.0.0.0");
+
+      // TcpListener server = new TcpListener(port);
+      server = new TcpListener(localAddr, port);
+
+      // Start listening for client requests.
+      server.Start();
+
+      // Buffer for reading data
+      Byte[] bytes = new Byte[256];
+      String data = null;
+
+      // Enter the listening loop.
+      while(true)
+      {
+        Console.Write("Waiting for a connection... ");
+
+        // Perform a blocking call to accept requests.
+        // You could also use server.AcceptSocket() here.
+        TcpClient client = server.AcceptTcpClient();
+        Console.WriteLine("Connected!");
+
+        data = null;
+
+        // Get a stream object for reading and writing
+        NetworkStream stream = client.GetStream();
+
+        int i, b;
+        long fileSize;
+        string fileName;
+
+        // Loop to receive all the data sent by the client.
+        while((i = stream.Read(bytes, 0, bytes.Length)) != 0)
+        {
+          Console.WriteLine("i={0}", i);
+
+          // Translate data bytes to a ASCII string.
+          data = System.Text.Encoding.ASCII.GetString(bytes, 0, i);
+
+          if(data.StartsWith("@FILE@")){
+            fileName = data.Split('@')[2];
+            fileSize = int.Parse(data.Split('@')[3]);
+            Console.WriteLine("File Size: {0}, File Name: {1}", fileSize, fileName);
+            byte[] fileAccept = System.Text.Encoding.ASCII.GetBytes("@ACCEPTED@");
+            stream.Write(fileAccept, 0, fileAccept.Length);
+
+            FileStream file = new FileStream("./hello.jpg", FileMode.OpenOrCreate, FileAccess.ReadWrite);
+            byte[] filePacket = new Byte[256];
+            while((b = stream.Read(filePacket, 0, filePacket.Length)) != 0){
+                Console.WriteLine("b={0}", b);
+
+                data = System.Text.Encoding.ASCII.GetString(filePacket, 0, b);
+                if(data == "@SENT@"){
+                  Console.WriteLine("File Received!");
+                }else {
+                  file.Write(filePacket, 0, b);
+                }
+            }
+            fileSize = file.Length;
+            file.Close();
+
+            Console.WriteLine("File Received!, File Size:{0}", fileSize);
+
+          }
+        }
+
+        // Shutdown and end connection
+        client.Close();
+      }
+    }
+    catch(SocketException e)
+    {
+      Console.WriteLine("SocketException: {0}", e);
+    }
+    finally
+    {
+       // Stop listening for new clients.
+       server.Stop();
+    }
+
+    Console.WriteLine("\nHit enter to continue...");
+    Console.Read();
+  }
+}