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JavaEchoServer.java
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78 lines (68 loc) · 2.43 KB
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// JavaEchoServer.java
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.text.SimpleDateFormat;
import java.util.Date;
public class JavaEchoServer {
public static void main(String[] args) {
ServerSocket serverSocket = null;
String serverPort = "30000";
if (args.length==1)
serverPort = args[0];
try {
serverSocket = new ServerSocket(Integer.parseInt(serverPort));
System.out.println(getTime() + " JavaEchoServer Running.");
} catch (IOException e) {
e.printStackTrace();
} // try - catch
while (true) {
try {
System.out.println(getTime() + " Waiting client connection..");
Socket socket = serverSocket.accept();
System.out.println(getTime() + " " + socket.getInetAddress()
+ " connected.");
OutputStream out = socket.getOutputStream();
DataOutputStream dos = new DataOutputStream(out);
InputStream in = socket.getInputStream();
DataInputStream dis = new DataInputStream(in);
while (true) {
String msg;
// client 로부터 읽고
//msg = dis.readUTF();
//System.out.println(getTime() + " received " + msg);
byte[] b = new byte[128];
int ret;
ret = dis.read(b, 0, 128);
msg = new String(b, "euc-kr");
msg = msg.trim(); // 앞뒤 blank 제거
System.out.println(getTime() + " received " + ret + " " + msg);
if (msg.contains("exit"))
break;
// client 에게 시간 붙여서 전송
msg = getTime() + " " + msg;
//dos.writeUTF(msg);
// 128 byte로 고정시키기 위함
msg = String.format("%-128s", msg);
byte[] bb;
bb = msg.getBytes("euc-kr"); // �ѱ� �ϼ��� �ڵ� ���
//System.out.println("sending = " + msg.length());
dos.write(bb,0, msg.length());
}
dis.close();
dos.close();
socket.close();
} catch (IOException e) {
e.printStackTrace();
} // try - catch
} // while
} // main
static String getTime() {
SimpleDateFormat f = new SimpleDateFormat("[hh:mm:ss]");
return f.format(new Date());
} // getTime
}