blob: 641c1736f2b15d792e5b95307789b6196d6b0049 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
package Server;
import java.net.*;
import java.io.*;
import java.util.Hashtable;
import java.util.LinkedList;
import java.util.Iterator;
public class ChatServer
{
private ServerSocket service;
private LinkedList<Connection> connections;
private Hashtable <String, Boolean> nicks;
public static final int portNum = 6667;
public static ChatServer server;
/** removing connection from the iterator.
* @param con connection */
public void connectionRemove(Connection con)
{
this.connections.remove(con);
}
/** returning ConnectionIterator. */
public Iterator<Connection> getConnectionIterator()
{
return this.connections.iterator();
}
/** constructor of the server , building socket , connection list and nicks dictionary.*/
ChatServer() throws IOException {
this.service = new ServerSocket(portNum);
this.connections = new LinkedList<Connection>();
this.nicks = new Hashtable <String, Boolean>();
}
/** check if nick already used. if not add it.
* @param nick the new nick name to set */
public boolean addNick (String nick)
{
if (this.nicks.get(nick) != null)
{
return false;
}
this.nicks.put(nick, true); // this value (true) has no meaning.
return true;
}
/** remove nick which is no longer in use.
* @param nick the nick to remove*/
public void removeNick (String nick)
{
this.nicks.remove(nick);
}
/** Listening to port and opening a socket */
public static void main(String[] args) throws IOException
{
try
{
server = new ChatServer();
} catch (IOException e)
{
System.err.println("Failed listening on port " + portNum + " (" + e + ")");
return;
}
Socket soc = null;
try
{
while (true)
{
soc = server.service.accept();
Connection con = new Connection(soc);
server.connections.add(con);
con.start();
}
} catch (IOException e)
{
System.out.println(e);
}
}
}
|
