EOFException on sending object

Dear all,

I've been struggeling with this issue for days now and I'm completely stuck on this.
The thing what I want to do is send an object over a socket.

I get the following error when I execute the send:
at java.io.ObjectInputStream$PeekInputStream.readFull y(Unknown Source)
at java.io.ObjectInputStream$BlockDataInputStream.rea dShort(Unknown Source)
at java.io.ObjectInputStream.readStreamHeader(Unknown Source)
at java.io.ObjectInputStream.<init>(Unknown Source)
at Agent.runAgent(Agent.java:125)
at Agent.<init>(Agent.java:53)
at Agent.main(Agent.java:193)

The code for the class that generates the error:

Code :

		while (runAgent) {
 
			// At this point, we can read for input and reply with
			// appropriate output.
			try {
				serverSocket = agentSocket.accept();
				in = new ObjectInputStream(serverSocket.getInputStream());
				out = new ObjectOutputStream(serverSocket.getOutputStream());
 
				InetAddress addr = agentSocket.getInetAddress();
 
				// Print out details of this connection
				System.out.println("Accepted Client : Address - "
						+ addr.getHostAddress().toString());
 
				Object temp = null;
 
				//while ((performanceProfile = (PerformanceProfile) in.readObject()) != null) {
				while ((temp = in.readObject()) != null) {
					if(temp instanceof PerformanceProfile){
						performanceProfile = (PerformanceProfile) temp;
						System.out.println("Profile received: " + performanceProfile.getName());
					}else if(temp instanceof String){
						String reply = "";
						performanceProfile = null;
						if(temp.toString().equals("profile_status")){
							if(performanceProfile == null ){
								reply = "no_profile";
							}else if(!performanceProfile.isRunning()){
								reply = "not_running";
							}else if(performanceProfile.isRunning()){
								reply = "running";
							}
						} else if(temp.toString().equals("stop_profile")){
							stopPerformanceProfile();
							System.out.println("Stopping performance profile");
						}
						out.writeObject(reply);
					}
					break;
				}
 
				if(performanceProfile != null){
					if(!performanceProfile.isRunning()){
						startPerformanceProfile();
					}
				}
 
				//serverSocket.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (ClassNotFoundException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} 
		}

The code that send the object:

Code :

String command = "profile_status";
		String reply = "";
		// Create new output stream to send the data in bytes
		try {
			socket = new Socket(agent, 11111);
			// Instantiate the input and output variables for the sockets
			OutputStream os = socket.getOutputStream();
			InputStream is = socket.getInputStream();
 
			ObjectOutputStream oos = new ObjectOutputStream(os);
			ObjectInputStream ois = new ObjectInputStream(is);
 
			// Write the object
			oos.writeObject(command);
 
			Object temp = null;
 
			while ((temp = ois.readObject()) != null) {
				if (temp instanceof String) {
					reply = temp.toString();
				}
				break;
			}
 
			// oos.writeObject(command);
			oos.flush();
			oos.close();
			os.flush();
			os.close();
			socket.close();
 
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
 
		return reply;

TO make it complete I included the source of the Agent and the Server below.

Attachment 891
Attachment 892

I can't figure out why this error occurs and maybe somebody can help me.