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‎AcceptThread.java

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// MIT License
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// Copyright (c) 2017 Matthew Chen, Arc676/Alessandro Vinciguerra
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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import java.io.*;
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import java.util.*;
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import java.net.*;
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public class AcceptThread extends Thread{
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public boolean running = true;
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private ServerSocket sock;
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private Server server;
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public AcceptThread(ServerSocket sock, Server server){
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this.sock = sock;
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this.server = server;
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}
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public void run(){
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while (running){
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try {
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Socket cSock = sock.accept();
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server.addClientHandler(new ClientHandler(cSock, server));
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} catch (SocketException e){
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if (e.getMessage().equals("Socket closed")){
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running = false;
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break;
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}
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} catch (Exception e) {
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System.err.println("Oh noes!");
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e.printStackTrace();
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}
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}
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}
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}

‎Client.java

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// MIT License
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// Copyright (c) 2017 Matthew Chen, Arc676/Alessandro Vinciguerra
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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import java.io.*;
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import java.net.*;
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import java.util.*;
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//port number: 4267
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public class Client{
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//terminal IO
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private Scanner sc;
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//network IO
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private Socket sock;
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private PrintWriter out;
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private BufferedReader in;
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private int port;
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private String host;
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private String username;
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private MsgThread msgThread;
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public Client(String[] args) {
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sc = new Scanner(System.in);
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if (args.length == 3){
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username = args[0];
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host = args[1];
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try {
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port = Integer.parseInt(args[2]);
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} catch (NumberFormatException e){
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System.err.println("Invalid port input. Using default port 4267.");
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port = 4267;
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}
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} else {
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while (true){
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System.out.print("Enter username: ");
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username = sc.nextLine();
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if (username.equals("server") || username.equals("global")){
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System.out.println("Error: reserved usernames cannot be used");
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} else {
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break;
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}
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}
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System.out.print("Enter host: ");
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host = sc.nextLine();
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try {
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System.out.print("Enter port number: ");
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port = Integer.parseInt(sc.nextLine());
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} catch (NumberFormatException e){
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System.err.println("Invalid port input. Using default port 4267.");
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port = 4267;
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}
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}
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try {
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sock = new Socket(host, port);
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out = new PrintWriter(sock.getOutputStream(), true);
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out.println(username);
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in = new BufferedReader(new InputStreamReader(sock.getInputStream()));
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msgThread = new MsgThread(in, null, username);
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msgThread.start();
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} catch (IOException e){
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System.err.println("IOException occurred.");
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return;
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}
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run();
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}
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private void run(){
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System.out.println("Begin chat with " + host + " on port " + port);
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String inLine = "";
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while (true){
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String toSend = sc.nextLine();
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out.println(username + ": " + toSend);
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if (toSend.equals("/disconnect") || !msgThread.running){
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System.out.println("Exiting...");
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break;
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} else {
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System.out.println(username + ": " + toSend);
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}
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}
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try {
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msgThread.running = false;
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sock.close();
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} catch (IOException e){
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System.err.println("err....");
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}
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System.out.println("Chat terminated");
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}
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public static void main(String[] args) {
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new Client(args);
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}
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}

‎ClientHandler.java

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// MIT License
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// Copyright (c) 2017 Matthew Chen, Arc676/Alessandro Vinciguerra
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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import java.net.*;
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import java.io.*;
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public class ClientHandler{
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public PrintWriter out;
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public BufferedReader in;
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public MsgThread msgThread;
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public String username;
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public ClientHandler(Socket clientSocket, Server server){
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try{
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out = new PrintWriter(clientSocket.getOutputStream(), true);
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in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
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username = in.readLine();
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server.broadcastToClients(username + " connected", "global");
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msgThread = new MsgThread(in, server, username);
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msgThread.start();
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}catch(Exception e){
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System.out.println("Error by the way");
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e.printStackTrace();
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}
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}
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public void send(String text){
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out.println(text);
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}
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public void stopRunning(){
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msgThread.running = false;
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}
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}

‎LICENSE

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MIT License
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3-
Copyright (c) 2017
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Copyright (c) 2017 Matthew Chen, Arc676/Alessandro Vinciguerra
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal

‎MsgThread.java

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// MIT License
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// Copyright (c) 2017 Matthew Chen, Arc676/Alessandro Vinciguerra
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
7+
// in the Software without restriction, including without limitation the rights
8+
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9+
// copies of the Software, and to permit persons to whom the Software is
10+
// furnished to do so, subject to the following conditions:
11+
12+
// The above copyright notice and this permission notice shall be included in all
13+
// copies or substantial portions of the Software.
14+
15+
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16+
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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import java.io.*;
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import java.util.*;
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import java.net.*;
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public class MsgThread extends Thread {
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public boolean running = true;
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private BufferedReader in;
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private Server server;
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private String username;
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public MsgThread(BufferedReader in, Server server, String username){
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this.in = in;
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this.server = server;
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this.username = username;
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}
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public void run(){
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String inLine = "";
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while (running){
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try {
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inLine = in.readLine();
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if (inLine == null || inLine.substring(inLine.indexOf(":") + 2).equals("/disconnect")){
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print(username + " disconnected");
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running = false;
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} else {
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print(inLine);
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}
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} catch(SocketException e){
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if(e.getMessage().equals("Socket closed")){
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System.out.println("Socket closed");
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running = false;
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}
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} catch (IOException e){
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e.printStackTrace();
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}
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}
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}
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private void print(String text){
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if (server != null){
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server.broadcastToClients(text, username);
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} else {
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System.out.println(text);
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}
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}
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}

‎README.TXT

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PROJECT TITLE: Chat Program
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VERSION or DATE: 1.1
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AUTHORS: Matthew Chen, Arc676/Alessandro Vinciguerra
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LICENSE: MIT; See LICENSE for more details

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