| package Server; | |
| /* | |
| * ClientConnection.java | |
| */ | |
| import java.io.*; | |
| import java.net.*; | |
| import java.util.*; | |
| import Common.*; | |
| /**This class maintains the connection information of the client including the | |
| * socket for communicating with the client. | |
| * It also has fields which act as a temporary storage space for messages | |
| * received by the ServerSocketReader. | |
| */ | |
| public class ClientConnection extends Thread | |
| { | |
| /**The socket which the server reads from and writes to*/ | |
| protected Socket connection; | |
| /**Manager object used for synchronization | |
| * (The reader unblocks the blocked manager | |
| * thread using this object). | |
| */ | |
| protected ServerManager manager; | |
| /**Output Stream obtained from the socket*/ | |
| protected DataOutputStream output; | |
| /**Input Stream for writing to the socket*/ | |
| protected DataInputStream input; | |
| /**Temporary place where the "ServerReader" stores its messages read | |
| * from the socket.*/ | |
| protected Message message; | |
| /**ServerReader updates (sets) this flag when it reads something | |
| * from the socket. | |
| * The ServerManager resets this flag when it has taken an action on it. | |
| */ | |
| protected boolean update = false; | |
| /**Constructor that builds a new connection and starts the | |
| * ServerSocketReader to recieve messages from the client. | |
| * @param clientSocket This is the socket which is to be used for communication | |
| * with the client. | |
| * @param m This is the ServerManager object which this connection will | |
| * use for synchronization. | |
| */ | |
| public ClientConnection(Socket clientSocket, ServerManager m) | |
| { | |
| connection = clientSocket; | |
| manager = m; | |
| try | |
| { | |
| //output = new ObjectOutputStream(connection.getOutputStream()); | |
| output = new DataOutputStream(connection.getOutputStream()); | |
| showMessage("Got Output Stream..." + output); | |
| } | |
| catch (IOException e) | |
| { | |
| showMessage("Exception while getting Output Stream."); | |
| } | |
| try | |
| { | |
| showMessage("About to get Input Stream..."); | |
| //input = new ObjectInputStream(connection.getInputStream()); | |
| input = new DataInputStream(connection.getInputStream()); | |
| showMessage("Got Input Stream..." + input); | |
| } | |
| catch (IOException e) | |
| { | |
| showMessage("Exception while getting Input Stream."); | |
| } | |
| message = new Message(); | |
| new ServerSocketReader(this); | |
| this.start(); | |
| } | |
| /**Null function does nothing. | |
| */ | |
| public void run() | |
| { | |
| } | |
| /**A small function to display messages. | |
| * @param msg The message string to show. | |
| */ | |
| private void showMessage(String msg) | |
| { | |
| System.err.println("ClientConnection: " + msg); | |
| } | |
| } | |