02장 TCP Server&Client 활용

TCPClient.Cs

소스(TcpClientExample.cs) using System; using System.IO; using System.Text; using System.Net; using System.Net.Sockets; class TcpClientTest {         static void Main(string[] args)         {                 TcpClient client = null;                 try {                      //LocalHost에 지정 포트로 TCP Connection을 생성하고 데이터를 송수신 하기                      //위한 스트림을 얻는다.                         client = new TcpClient();                         client.Connect("localhost", 5001);                         NetworkStream writeStream = client.GetStream();                         //보낼 데이터를 읽어 Default 형식의 바이트 스트림으로 변환                         string dataToSend = Console.ReadLine();                                 byte [] data = Encoding.Default.GetBytes                                             (dataToSend);                                                                                                          while(true)                         {                                                                                                 dataToSend += "\r\n";                                                                 data = Encoding.Default.GetBytes                                            (dataToSend);                                                                                                  writeStream.Write(data,0,data.Length);                                                                                                  if (dataToSend.IndexOf("<EOF>") > -1) break;                                                                          dataToSend = Console.ReadLine();                         }                                                 }                 catch(Exception ex) {                         Console.WriteLine(ex.ToString());                 }                 finally {                         client.Close();                 }         } }

TCPServer.Cs

using System; using System.IO; using System.Text; using System.Net; using System.Net.Sockets; class Server {    public static void Main()    {             NetworkStream stream = null;           TcpListener tcpListener = null;           StreamReader reader = null;           Socket clientsocket = null;       try       {                                //IP주소를 나타내는 객체를 생성,TcpListener를 생성시 인자로 사용할려고                  IPAddress ipAd = IPAddress.Parse("127.0.0.1");                  //TcpListener Class를 이용하여 클라이언트의 연결을 받아 들인다.                  tcpListener = new TcpListener(ipAd, 5001);                  tcpListener.Start();         //Client의 접속이 올때 까지 Block 되는 부분, 대개 이부분을 Thread로 만들어 보내 버린다.                  //백그라운드 Thread에 처리를 맡긴다.                  clientsocket = tcpListener.AcceptSocket();                  //클라이언트의 데이터를 읽고, 쓰기 위한 스트림을 만든다.                  stream = new NetworkStream(clientsocket);                                                Encoding encode = System.Text.Encoding.GetEncoding("ks_c_5601-1987");              reader = new StreamReader(stream, encode);                               while(true)                  {                                                          string str = reader.ReadLine();                                  Console.WriteLine(str);                                          }                       }       catch (Exception e )       {          Console.WriteLine(e.ToString());       }           finally {                 clientsocket.Close();           }    } }