zokket is an easy-to-use asynchronous socket networking library for Python supporting both UDP, TCP sockets along with timers using a delegate interface.

$ pip install zokket

The run loop processes and manages sockets and timers. By default a run loop is created in the background and you can run a run loop as follows:

zokket.DefaultRunloop.run()

There are three runloops that you can choose from:

• SelectRunloop (Default) - Runloop that makes use of the select() system call and is available on all platforms. SelectRunloop is O(highest file descriptor).
• PollRunloop - A run loop that uses poll() system call, which is not available on all platforms. PollRunloop() is O(number of file descriptors).
• QtRunloop - Provides integration for using Zokket with PyQt4.

To switch the default, you can call the set_default() method on a run loop. For example:

PollRunloop.set_default()

You may also configure sockets and timers to use a specific run loop instance.

A TCP Socket can be initialised with a delegate and an optional runloop, by default the default runloop will be used.

from zokket import TCPSocket, DefaultRunloop

class Delegate(object):
    def socket_did_connect(self, sock, host, port):
        print('New connection from {}:{}'.format(host, port))
        sock.send('Hey!\n')

    def socket_read_data(self, sock, data):
        print('Received: {}'.format(data))

TCPSocket(Delegate()).accept(port=5000)
DefaultRunloop.run()

You can consult the source code for the full delegate method list.

The UDP socket works in a similar way to the TCP socket, refer to the source code for documentation.