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--- user:mtaft4:portfolio:providerclass [2011/03/22 14:58] – mtaft4
+++ user:mtaft4:portfolio:providerclass [2011/03/22 15:18] (current) – mtaft4
@@ Line 1: / Line 1: @@
+This is code for a Java based server to send a series of predefined messages back and forth before shutting down. The comments will contain sort of beginning how this works comments to help people from the class understand the code.
+<code java>import java.io.*;  //Importing the I/O and ServerSocket packages in order to use the
+import java.net.ServerSocket; //namespaces for printing messages and creating sockets
+public class Provider{
+	ServerSocket providerSocket;  //Instantiate the ServerSocket object
+	Socket connection = null;     //No connection yet
+	ObjectOutputStream toClient;  //Streams to print and send messages by
+	ObjectInputStream fromClient;
+	String message;  //The actual message being sent
+	Provider(){}  //Somewhat function prototype
+	void run() {  //Method for actually creating sockets and sending messages
+		try {
+			providerSocket = new ServerSocket(2004, 10); //Create a socket on port 2004 to accept connections from the client
+			System.out.println("Waiting for connection");
+			connection = providerSocket.accept(); //listen for a connection
+			System.out.println("Connection received from " + connection.getInetAddress().getHostName());
+			toClient = new ObjectOutputStream(connection.getOutputStream()); //create output object
+			toClient.flush(); //flush the buffer
+			in = new ObjectInputStream(connection.getInputStream()); //create input object
+			sendMessage("Connection successful");
+			do { //loop while there's a connection
+				try { //do the messaging
+					message = (String)in.readObject();
+					System.out.println("client>" + message);
+					if (message.equals("bye"))
+						sendMessage("bye");
+				}
+				catch(ClassNotFoundException classnot) { //catch the exceptions that the try can throw
+					System.err.println("Data received in unknown format");
+				}
+			} while (!message.equals("bye"));
+		}
+		catch(IOException ioException) { //catch exceptions
+			ioException.printStackTrace();
+		}
+		finally {
+			try { //close all connections
+				in.close();
+				out.close();
+				providerSocket.close();
+			}
+			catch(IOException ioException) {
+				ioException.printStackTrace();
+			}
+		}
+	}
+	void sendMessage(String msg) { //sending messages to the client
+		try {
+			out.writeObject(msg);
+			out.flush();
+			System.out.println("server>" + msg);
+		}
+		catch(IOException ioException) {
+			ioException.printStackTrace();
+		}
+	}
+	public static void main(String args[]) {  //Static method to instantiate the class we created
+		Provider server = new Provider();
+		while(true) {
+			server.run();
+		}
+	}
+}</code>
+The code is a little choppy currently as this was written with limited knowledge of Java and pretty much straight from the Java documentation. The next step is to either get this to send user defined messages or to send midi notes back and forth. Hopefully a it stands the client/server code should be able to become a base for both the Jello and Orka projects.

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