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only send regular talk messages to users if they are available

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git-svn-id: svn://anubis/gvsu@160 45c1a28c-8058-47b2-ae61-ca45b979098e
This commit is contained in:
josh 2008-09-19 00:23:48 +00:00
parent c7e988e92b
commit 9d9f1cbd76
1 changed files with 109 additions and 101 deletions
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210
cs656/lab2/src/ChatClient.java
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@ -18,22 +18,22 @@ import java.net.*;
*/
public class ChatClient
{
private PresenceService myPServ;
private String myUserName;
private Thread myListenThread;
private ChatClientListener myListener;
private RegistrationInfo myRegistrationInfo;
private PresenceService myPServ;
private String myUserName;
private Thread myListenThread;
private ChatClientListener myListener;
private RegistrationInfo myRegistrationInfo;
/**
* This class provides a thread to listen for incoming connections.
*/
private class ChatClientListener implements Runnable
{
ServerSocket mySocket;
private class ChatClientListener implements Runnable
{
ServerSocket mySocket;
public ChatClientListener()
{
try
public ChatClientListener()
{
try
{
/* Just listen on any available TCP port */
mySocket = new ServerSocket(0);
@ -44,23 +44,23 @@ public class ChatClient
e.printStackTrace();
System.exit(-1);
}
}
}
public int getPort()
{
return mySocket.getLocalPort();
}
public int getPort()
{
return mySocket.getLocalPort();
}
public String getHost()
{
return mySocket.getInetAddress().getHostName();
}
public String getHost()
{
return mySocket.getInetAddress().getHostName();
}
/* called when the thread is first scheduled */
public void run()
{
Socket s;
/* wait indefinitely for new connections */
public void run()
{
Socket s;
/* wait indefinitely for new connections */
for (;;)
{
try
@ -73,14 +73,14 @@ public class ChatClient
{
}
}
}
}
/**
* This class provides a listener for any connections that come in.
* All it does is print any received chat messages from the remote
* user to this user's screen.
*/
public class ChatClientListenerThread implements Runnable
public class ChatClientListenerThread implements Runnable
{
Socket mySocket;
@ -111,18 +111,18 @@ public class ChatClient
}
}
}
}
}
/* construct the main ChatClient object */
public ChatClient(PresenceService pserv, String userName)
{
myPServ = pserv;
myUserName = userName;
}
public ChatClient(PresenceService pserv, String userName)
{
myPServ = pserv;
myUserName = userName;
}
public void run()
{
try
public void run()
{
try
{
myListener = new ChatClientListener();
myRegistrationInfo =
@ -141,46 +141,46 @@ public class ChatClient
return;
}
/* Start a thread to listen for connections in */
myListenThread = new Thread(myListener);
myListenThread.start();
/* Start a thread to listen for connections in */
myListenThread = new Thread(myListener);
myListenThread.start();
mainloop();
}
mainloop();
}
/* call the register function in the presence service */
private boolean register()
{
try {
myPServ.register(myRegistrationInfo);
} catch (Exception e) {
System.out.println("Exception caught when registering!");
e.printStackTrace();
return false;
}
return true;
}
private boolean register()
{
try {
myPServ.register(myRegistrationInfo);
} catch (Exception e) {
System.out.println("Exception caught when registering!");
e.printStackTrace();
return false;
}
return true;
}
/* call the unregister function in the presence service */
private boolean unregister()
{
try {
myPServ.unregister(myUserName);
} catch (Exception e) {
System.out.println("Exception caught when unregistering!");
e.printStackTrace();
return false;
}
return true;
}
private boolean unregister()
{
try {
myPServ.unregister(myUserName);
} catch (Exception e) {
System.out.println("Exception caught when unregistering!");
e.printStackTrace();
return false;
}
return true;
}
/* this is the main wait-for-input-and-respond loop */
private void mainloop()
{
BufferedReader br = new BufferedReader(
new InputStreamReader(System.in));
String line;
try
private void mainloop()
{
BufferedReader br = new BufferedReader(
new InputStreamReader(System.in));
String line;
try
{
for (;;)
{
@ -238,8 +238,16 @@ public class ChatClient
{
user = rest.substring(0, idx);
RegistrationInfo ri = myPServ.lookup(user);
String message = rest.substring(idx + 1);
sendUserMessage(user, message);
/* only send a message to available users */
if (ri.getStatus())
{
String message = rest.substring(idx + 1);
sendUserMessage(user, message);
}
else
{
System.out.println(user + " is busy!");
}
}
else
{
@ -308,8 +316,8 @@ public class ChatClient
e.printStackTrace();
}
unregister();
System.exit(0);
}
System.exit(0);
}
/* a useful subroutine to break out the task of sending a
* message to a particular user */
@ -338,31 +346,31 @@ public class ChatClient
/* the main method is invoked when the ChatClient is first started */
public static void main(String args[])
{
String user;
String host = "localhost"; /* default host */
int port = 1099; /* default port */
String user;
String host = "localhost"; /* default host */
int port = 1099; /* default port */
if (args.length < 1)
{
System.err.println("Usage: ChatClient <user> [host[:port]]");
return;
}
if (args.length < 1)
{
System.err.println("Usage: ChatClient <user> [host[:port]]");
return;
}
user = args[0];
user = user.replace(' ', '_');
user = args[0];
user = user.replace(' ', '_');
if (args.length >= 2)
{
StringTokenizer st = new StringTokenizer(args[1], ":");
if (st.hasMoreTokens())
{
host = st.nextToken();
if (st.hasMoreTokens())
{
port = Integer.parseInt(st.nextToken());
}
}
}
if (args.length >= 2)
{
StringTokenizer st = new StringTokenizer(args[1], ":");
if (st.hasMoreTokens())
{
host = st.nextToken();
if (st.hasMoreTokens())
{
port = Integer.parseInt(st.nextToken());
}
}
}
if (System.getSecurityManager() == null)
{
@ -373,13 +381,13 @@ public class ChatClient
Registry registry = LocateRegistry.getRegistry(host, port);
PresenceService pserv = (PresenceService)
registry.lookup("PresenceService");
if (pserv == null)
{
System.err.println("Error: Could not connect to presence service");
return;
}
ChatClient cc = new ChatClient(pserv, user);
cc.run();
if (pserv == null)
{
System.err.println("Error: Could not connect to presence service");
return;
}
ChatClient cc = new ChatClient(pserv, user);
cc.run();
}
catch (Exception e)
{