A simple echo server listening on port 23. To test, launch it on the PSP and when the IP address is displayed, telnet to it from your desktop.

Need font and background.

#-*- coding: ISO-8859-1 -*-

import asyncore, asynchat, socket, StringIO, threading
import pspnet, psp2d

class Echoer(asynchat.async_chat):
    def __init__(self, *args, **kwargs):
        asynchat.async_chat.__init__(self, *args, **kwargs)

        self.__data = StringIO.StringIO()
        self.set_terminator('\r\n')

    def data(self):
        r = self.__data.getvalue()
        self.__data = StringIO.StringIO()
        return r

    def collect_incoming_data(self, d):
        self.__data.write(d)

    def found_terminator(self):
        msg = self.data()
        self.push('Did you say "%s" ?\r\n' % msg)
        self.set_terminator('\r\n')

class Acceptor(asyncore.dispatcher):
    def handle_accept(self):
        fd, addr = self.accept()
        Echoer(fd)

def runloop():
    try:
        asyncore.loop()
    except:
        import traceback
        traceback.print_exc(file = file('trace.txt', 'a+'))

def main():
    screen = psp2d.Screen()
    font = psp2d.Font('font.png')
    bgimg = psp2d.Image('background.png')

    screen.blit(bgimg)
    font.drawText(screen, 0, 0, 'Connecting...')
    screen.swap()

    def cb(s):
        screen.blit(bgimg)
        if s >= 0:
            font.drawText(screen, 0, 0, 'State: %d/4' % s)
        else:
            font.drawText(screen, 0, 0, 'Connected. IP: %s' % pspnet.getIP())
        screen.swap()

    pspnet.connectToAPCTL(1, cb)

    a = Acceptor()
    a.create_socket(socket.AF_INET, socket.SOCK_STREAM)
    a.bind(('', 23))
    a.listen(5)

    thr = threading.Thread(target = runloop)
    thr.setDaemon(True)
    thr.start()

    while True:
        pad = psp2d.Controller()
        if pad.circle:
            break

if __name__ == '__main__':
    try:
        main()
    except KeyboardInterrupt:
        pass
    except:
        import traceback
        traceback.print_exc(file = file('trace.txt', 'a+'))

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