Hi,

I'm involved in a project featuring computer vision on a large cluster. We ended up requiring a network library that works a bit different from the core processing one.

You can find the library at http://wiki.github.com/aginor/alternet.

The library uses the Java NIO package to perform asynchronous IO over the network while still keeping the library easy to use.
Everything is event-based except for the actual writing of data to the network. Like the processing core network library we provide a class for servers and a class for clients. In addition to this we provide a third class which is used to keep track of a hostname  and port pair.

The events that are supported in the current version are:
receiving of data
the server terminated the connection
a new client connected
the client terminated the connection

I currently provide two very simple examples, the first one being a chat server and the second one being a chat client.

The library has been tested with Processing 1.03 on Linux and Windows XP.

I hope that you will find this library useful.

Thanks for this - I think it's exactly what I need. However, I'm building something that needs to be able to gracefully reconnect upon exiting and I'm finding that the timeout for subsequent connection attempts is very long (the first attempt fails quickly). Here's the code I'm trying to use (in the setup() function):

Code:

while (!success && testIP < 25)
  {
    println("Running for testIP = " + testIP);
    //Form our IP Address based on the testIP value
    String lastIpNum = Integer.toString(testIP);
    String ipAddress = "192.168.1." + lastIpNum;
    //ipAddress = "192.168.1.20";
    
    //Create a client and try connecting
    client = new Client(this, ipAddress, 34567);
    
    success = client.connect();
    if(!success) 
    {
	println("Failed to connect to " + ipAddress);
    }
    else
    {
	println("Connected successfully to " + ipAddress);
	
    }
    testIP++;
  }
 

Any suggestions would be appreciated.