Server socket - send image to client

[Hinty]

Hey,

Im new to JAVA so go easy on em please.

I have a server and a client that can successfully connect to each other and other stuff but 1 function of the server is to send an image to the client. I can send the image but i was wondering how i would obtain certain information about the transfer. How would i obtain information such as:

Time taken to transfer image
average bit rate

// Server code
FileInputStream fis = new FileInputStream("images\\picture.jpg");
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
ObjectOutputStream oos = new ObjectOutputStream(serverSocket.getOutputStream()) ;
oos.writeObject(buffer);

// Client code
ObjectInputStream ois = new ObjectInputStream(clientSocket.getInputStream());
byte[] buffer = (byte[])ois.readObject();
FileOutputStream fos = new FileOutputStream("downloaded\\picture.jpg");
fos.write(buffer);

if you need anything else explain or more info please let me know.

[strati1991]

ObjectInputStream ois = new ObjectInputStream(clientSocket.getInputStream());
long start = System.currentTimeMillis(); // start Time in milisecons
byte[] buffer = (byte[])ois.readObject();
long time = System.currentTimeMillis()-start;//duration of the download
//now can you divide the duration of the transfer throu the size of the //picture to get the average bitrate
//to get the size of the File you can use java's RandomAccessFile class //and its method length()
FileOutputStream fos = new FileOutputStream("downloaded\\picture.jpg");
fos.write(buffer);

Maybe it is better to use a DataInputStream and the DataOutputStream to get a faster transmission

[toadaly]

Assuming all systems use NTP, you can use "System.getCurrentTimeMillis()" (or the newer ns call) on the server side, package that information into a message header, then do the same on the client side, take the difference, and that's you're transfer time.