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package com.cycling74.net;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;
import com.cycling74.max.Atom;
import com.cycling74.max.Callback;
import com.cycling74.max.MaxRuntimeException;
import com.cycling74.max.MaxSystem;
/**
* Class wrapper to receive atoms via TCP/IP using the class
* TcpSender.
*
* This class is a work in progress and have been lightly tested.
*/
public class TcpReceiver implements Runnable {
ServerSocket receiver;
Callback callback = null;
String debugString = null;
int port = -1;
boolean runnable = true;
public TcpReceiver() {
}
public TcpReceiver(int port) {
this.port = port;
}
public TcpReceiver(int port, Object caller, String method) {
this.port = port;
this.callback = new Callback(caller, method, new Object[] { new Atom[0] });
}
public void close() {
if ( receiver == null )
return;
runnable = false;
try {
receiver.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public int getPort() {
return port;
}
public void setActive(boolean active) {
if ( port == -1 )
throw new MaxRuntimeException("No TCP port specified");
if ( active == true ) {
try {
receiver = new ServerSocket(port);
} catch (IOException e) {
throw new MaxRuntimeException(e);
}
runnable = true;
new Thread(this, "TcpSender[" + port + "]").start();
} else {
close();
}
}
public void setCallback(Object caller, String methodName) {
try {
this.callback = new Callback(caller, methodName, new Object[] { new Atom[0] });
} catch (Exception e) {
throw new MaxRuntimeException(e);
}
}
public void setPort(int port) {
setActive(false);
this.port = port;
}
public void setDebugString(String debugString) {
this.debugString = debugString;
}
private void parseMessage(BufferedReader reader) throws IOException {
while(runnable) {
String msg = reader.readLine();
if ( debugString != null )
MaxSystem.post(debugString + " " + msg);
if ( callback != null ) {
callback.setArgs(Atom.parse(msg));
try {
callback.execute();
} catch( Exception e ) {
e.printStackTrace();
}
}
}
}
public void run() {
try {
while(runnable) {
Socket socket = receiver.accept();
BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
parseMessage(reader);
}
} catch (Exception e) {
if ( runnable != false) {
runnable = false;
throw new MaxRuntimeException(e);
}
}
}
}
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