1 | package com.framsticks.net.client3D;
|
---|
2 |
|
---|
3 | import java.io.BufferedReader;
|
---|
4 | import java.io.IOException;
|
---|
5 | import java.io.InputStreamReader;
|
---|
6 | import java.io.PrintWriter;
|
---|
7 | import java.net.Socket;
|
---|
8 | import java.util.ArrayList;
|
---|
9 |
|
---|
10 | /**
|
---|
11 | * Communication class.
|
---|
12 | *
|
---|
13 | * @author MoMaT (modified by vorg @ 2007/01/25)
|
---|
14 | */
|
---|
15 | public class Communication {
|
---|
16 | private Socket socket = null;
|
---|
17 | private PrintWriter out = null;
|
---|
18 | private BufferedReader in = null;
|
---|
19 | protected boolean connected = false;
|
---|
20 |
|
---|
21 | private ArrayList<String> log = new ArrayList<String>();
|
---|
22 |
|
---|
23 | /**
|
---|
24 | * Connect to a server.
|
---|
25 | *
|
---|
26 | * @param ip
|
---|
27 | * @param port
|
---|
28 | * @throws IOException
|
---|
29 | * Thrown on I/O error.
|
---|
30 | */
|
---|
31 | public void connect(String ip, int port) throws IOException {
|
---|
32 | try {
|
---|
33 | socket = new Socket(ip, port);
|
---|
34 | out = new PrintWriter(socket.getOutputStream(), true);
|
---|
35 | in = new BufferedReader(new InputStreamReader(
|
---|
36 | socket.getInputStream()));
|
---|
37 |
|
---|
38 | connected = true;
|
---|
39 | sendMessage("version 3");
|
---|
40 | String message = in.readLine();
|
---|
41 | log.add("> " + message);
|
---|
42 |
|
---|
43 | } catch (Exception e) {
|
---|
44 | Log.getInstance().log("err", e.toString());
|
---|
45 | }
|
---|
46 | }
|
---|
47 |
|
---|
48 | /**
|
---|
49 | * Close connection.
|
---|
50 | *
|
---|
51 | * @throws IOException
|
---|
52 | * Thrown on socket close error.
|
---|
53 | */
|
---|
54 | public void disconnect() throws IOException {
|
---|
55 | connected = false;
|
---|
56 | out.close();
|
---|
57 | in.close();
|
---|
58 | socket.close();
|
---|
59 | }
|
---|
60 |
|
---|
61 | /**
|
---|
62 | * Read a server response.
|
---|
63 | *
|
---|
64 | * @return server answer
|
---|
65 | * @throws IOException
|
---|
66 | * Thrown on read error.
|
---|
67 | * @throws InterruptedException
|
---|
68 | * Thrown on thread sleep interruption.
|
---|
69 | * @throws CommunicationErrorException
|
---|
70 | * Thrown on protocol error.
|
---|
71 | */
|
---|
72 | public ArrayList<String> readMessage() throws IOException,
|
---|
73 | InterruptedException, CommunicationErrorException {
|
---|
74 | if (!connected) {
|
---|
75 | Log.getInstance().log("wrn",
|
---|
76 | "Reading message failed. You are not connected!");
|
---|
77 | return new ArrayList<String>();
|
---|
78 | }
|
---|
79 | String message = null;
|
---|
80 | ArrayList<String> buffer = new ArrayList<String>();
|
---|
81 |
|
---|
82 | // gentle wait for input on socket
|
---|
83 | // elapsedTime added by vorg to avoid infinite loop
|
---|
84 | int elapsedTime = 0;
|
---|
85 | while (false == in.ready()) {
|
---|
86 | Thread.sleep(100);
|
---|
87 | elapsedTime++;
|
---|
88 | if (elapsedTime > 100) {
|
---|
89 | throw new InterruptedException("Request timeout");
|
---|
90 | }
|
---|
91 | }
|
---|
92 |
|
---|
93 | // read server answer
|
---|
94 | while ((message = in.readLine()) != null) {
|
---|
95 | log.add("> " + message);
|
---|
96 | // stop if reading complete
|
---|
97 | if (message.startsWith("ok")) {
|
---|
98 | // add ok line if it contains additional info
|
---|
99 | if (3 < message.length()) {
|
---|
100 | buffer.add(message);
|
---|
101 | }
|
---|
102 | break;
|
---|
103 | } else if (message.startsWith("error")) {
|
---|
104 | String error = message.substring(message.indexOf(' '));
|
---|
105 | throw new CommunicationErrorException(error);
|
---|
106 | }
|
---|
107 | buffer.add(message);
|
---|
108 | }
|
---|
109 | return buffer;
|
---|
110 | }
|
---|
111 |
|
---|
112 | /**
|
---|
113 | * Send request to a server.
|
---|
114 | *
|
---|
115 | * @param message
|
---|
116 | */
|
---|
117 | public void sendMessage(String message) {
|
---|
118 | Log.getInstance().log(">>>", message);
|
---|
119 | log.add(message);
|
---|
120 | if (!connected) {
|
---|
121 | Log.getInstance().log("wrn",
|
---|
122 | "Sending message failed. You are not connected!");
|
---|
123 | return;
|
---|
124 | }
|
---|
125 | out.println(message);
|
---|
126 | }
|
---|
127 |
|
---|
128 | /**
|
---|
129 | * Log getter.
|
---|
130 | *
|
---|
131 | * @return log array
|
---|
132 | */
|
---|
133 | public ArrayList<String> getLog() {
|
---|
134 | return log;
|
---|
135 | }
|
---|
136 |
|
---|
137 | public Boolean isConnected() {
|
---|
138 | return connected;
|
---|
139 | }
|
---|
140 | }
|
---|