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commit #1

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6bf42f5
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cinxdy Jun 10, 2019
f622814
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cinxdy Jun 13, 2019
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24 changes: 18 additions & 6 deletions ChatClient.java
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Original file line number Diff line number Diff line change
@@ -1,31 +1,38 @@
import java.net.*;
import java.io.*;
import java.util.Scanner;

public class ChatClient {

public static void main(String[] args) {
if(args.length != 2){
System.out.println("Usage : java ChatClient <username> <server-ip>");
System.exit(1);
}

//#1
Scanner input = new Scanner(System.in);
System.out.print("your name >> ");
String name = input.next();
System.out.print("server ip >> ");
String ip = input.next();

Socket sock = null;
BufferedReader br = null;
PrintWriter pw = null;
boolean endflag = false;
try{
sock = new Socket(args[1], 10001);
sock = new Socket(ip, 10001);
pw = new PrintWriter(new OutputStreamWriter(sock.getOutputStream()));
br = new BufferedReader(new InputStreamReader(sock.getInputStream()));
BufferedReader keyboard = new BufferedReader(new InputStreamReader(System.in));
// send username.
pw.println(args[0]);
pw.println(name);
pw.flush();
InputThread it = new InputThread(sock, br);
it.start();
String line = null;
while((line = keyboard.readLine()) != null){
pw.println(line);
pw.flush();
if(line.equals("/userlist"))
send_userlist();
if(line.equals("/quit")){
endflag = true;
break;
Expand All @@ -50,6 +57,11 @@ public static void main(String[] args) {
}catch(Exception ex){}
} // finally
} // main

public void send_userlist(){

}

} // class

class InputThread extends Thread{
Expand Down
55 changes: 37 additions & 18 deletions ChatServer.java
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Original file line number Diff line number Diff line change
@@ -1,23 +1,25 @@
import java.net.*;
import java.text.SimpleDateFormat;
import java.io.*;
import java.util.*;

public class ChatServer {

public static void main(String[] args) {
try{
ServerSocket server = new ServerSocket(10001);
System.out.println("Waiting connection...");
HashMap hm = new HashMap();
ServerSocket server = new ServerSocket(10001); //port번호 10001로 새로운 ServerSocket을 만든다
System.out.println("Waiting connection..."); // Waiting connection...이라는 메세지를 터미널에 출력
HashMap hm = new HashMap(); //새 해쉬맵을 만듦
while(true){
Socket sock = server.accept();
ChatThread chatthread = new ChatThread(sock, hm);
chatthread.start();
Socket sock = server.accept(); // sock라는 소켓은 server라는 서버소켓의 요청을 받아들인다.
ChatThread chatthread = new ChatThread(sock, hm); // 새로운 ChatThread Object를 만든다.
chatthread.start();
} // while
}catch(Exception e){
System.out.println(e);
}
} // main

}

class ChatThread extends Thread{
Expand All @@ -26,15 +28,17 @@ class ChatThread extends Thread{
private BufferedReader br;
private HashMap hm;
private boolean initFlag = false;


public ChatThread(Socket sock, HashMap hm){
this.sock = sock;
this.hm = hm;
try{
PrintWriter pw = new PrintWriter(new OutputStreamWriter(sock.getOutputStream()));
br = new BufferedReader(new InputStreamReader(sock.getInputStream()));
id = br.readLine();
broadcast(id + " entered.");
System.out.println("[Server] User (" + id + ") entered.");
PrintWriter pw = new PrintWriter(new OutputStreamWriter(sock.getOutputStream())); // sock의 OutputStream으로 PrintWriter를 만듦
br = new BufferedReader(new InputStreamReader(sock.getInputStream())); // sock의 InputStream으로 Input Buffer를 만듦
id = br.readLine(); //input buffer로 id를 읽음
broadcast(id + " entered.");
System.out.println("[Server] User (" + id + ") entered."); //
synchronized(hm){
hm.put(this.id, pw);
}
Expand All @@ -43,6 +47,8 @@ public ChatThread(Socket sock, HashMap hm){
System.out.println(ex);
}
} // construcor


public void run(){
try{
String line = null;
Expand All @@ -67,29 +73,42 @@ public void run(){
}catch(Exception ex){}
}
} // run


public void sendmsg(String msg){
int start = msg.indexOf(" ") +1;
int end = msg.indexOf(" ", start);
if(end != -1){
String to = msg.substring(start, end);
String msg2 = msg.substring(end+1);
String msg2 = msg.substring(end + 1);
Object obj = hm.get(to);
if(obj != null){
PrintWriter pw = (PrintWriter)obj;
PrintWriter pw = (PrintWriter) obj;
pw.println(id + " whisphered. : " + msg2);
pw.flush();
} // if
}
} // sendmsg


public void broadcast(String msg){
SimpleDateFormat s = new SimpleDateFormat("[a h:mm]");

synchronized(hm){
Collection collection = hm.values();
Iterator iter = collection.iterator();
while(iter.hasNext()){
Collection collection = hm.values(); //Collection의 값은 HashMap이다.
Iterator iter = collection.iterator(); //Iterator 만들기
while(iter.hasNext()){
PrintWriter pw = (PrintWriter)iter.next();
pw.println(msg);
pw.flush();

//#2
pw.println(s.format(System.currentTimeMillis()));

pw.println(msg); //pw outputStream으로 msg를 전송
pw.flush(); // 버퍼 비우기
}
}

} // broadcast


}