// Javaによるサーバーアプリケーション
//
//       2002/ 6/ 5 宍戸　輝光
//

import java.io.*;
import java.net.*;

public class fserver {

	public static void main(String args[]) {

		fserver app=new fserver();
		app.server();

	}

	public void server() {

		ServerSocket ss=null;
		Socket sc=null;
		OutputStream os=null;
		InputStreamReader isr=null;
		int c=0;
		String line=null;
		boolean go=true;

		try { // サーバーソケット作成
			ss=new ServerSocket(7777);
		} catch (Exception e) {

			System.out.println("Error");
			return;

		}

		while (go) { // サーバー処理ループ

			try { // 接続受け入れ
				sc=ss.accept();
			} catch (Exception e) {

				System.out.println("Accept error");
				return;

			}

			try {

				os=sc.getOutputStream();
				isr=new InputStreamReader(sc.getInputStream());

			} catch (Exception e) {

				System.out.println("getStreams error");
				return;

			}

			String mes="Test Server!\r\n";

			try {
				os.write(mes.getBytes());
			} catch (Exception e) {

				System.out.println("Write error");
				return;

			}

			boolean logon=true;

			while (logon) {

				boolean bRead=true;
				StringBuffer sb=new StringBuffer();

				while (bRead) { // 入力文字列受取

					try {
						c=isr.read();
					} catch(Exception e) {
						bRead=false;
					}

					if (c=='\r' || c=='\n')
						bRead=false;
					else
						sb.append((char)c);

				}

				line=sb.toString();

				if (line.length()>0) {

					mes="Command:"+line+"\r\n";
					try {
						os.write(mes.getBytes());
					} catch (Exception e) {

						System.out.println("Write error");
						return;

					}

					if (line.equals("host")) {

						mes=ss.toString()+"\r\n";

						try {
							os.write(mes.getBytes());
						} catch (Exception e) {

							System.out.println("Write error");
							return;

						}

					}

					if (line.equals("local")) {

						mes=sc.toString()+"\r\n";

						try {
							os.write(mes.getBytes());
						} catch (Exception e) {

							System.out.println("Write error");
							return;

						}

					}

					if (line.equals("logout"))
						logon=false;

					if (line.equals("exit")) {

						try {
							sc.close();
						} catch (Exception e) {

							System.out.println("Close error");
							return;

						}

						logon=false;
						go=false;

					}

				}

			}

			try {
				sc.close();
			} catch (Exception e) {

				System.out.println("Close error");
				return;

			}

		}

		try {
			ss.close();
		} catch (Exception e) {

			System.out.println("Close error");
			return;

		}

	}

}